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The furniture and seating arrangements of the room can be organized in a variety of different ways. Check out the handy Room Setup Guide from AmpliVox and know exactly which amplifier and setup is right for your next presentation!
Although hubs and switches look very similar and are connected to the network in much the same way, there is a significant difference in the way they function.
An Ethernet switch, on the other hand, provides a central connection in an Ethernet network in which each connected device has its own dedicated link with full bandwidth.
The two important electrical specifications for a pair of headphones are the impedance of the phone transducer itself and its on-the-ear sensitivity. Headphone sensitivity is usually stated as the in-the-ear sound pressure level produced by one milliwatt (mW) of audio input. Doing a little bit of math will show that a signal of .775 Vrms will produce one mW in a 600 ohm load.
Low impedance headphones will sound louder with devices with low output voltages such as portable MD recorders etc., you cannot use more than one pair of headphones at the same output simultaneously.
New school states Woofers out and Tweeters and mid-frequencies in (yes, the opposite of old school). Frequency-Hopping Spread Spectrum wireless communication provides error-free transmission, top security, and high levels of throughput without the need for an FCC site license. Narrow-band frequency hoppers use a predefined algorithm to maintain synchronization and high throughput between master and remote modems.
The sequence of frequencies is very difficult to predict and thus nearly impossible to eavesdrop on or jam. This saying is not technically exactly correct but for every day use use of dynamic microphones you will not find gain limitations. Sennheiser uses dynamic microphones for distortion measurements on loudspeakers at very high sound pressure levels. So as a conclusion we can state the MD 421 has no maximum SPL limitations for practical use.
According to our friends at Genelec, the role of a monitoring system is to reproduce sound without adding or taking anything away from the original input signal. Secondly, onto the often quoted "final mix translation" issue, one can observe that domestic and car audio systems are generally improving over time and having better, i.e. Extended display identification data (EDID) is a data structure provided by a digital display to describe its capabilities to a video source (e.g. Before DDC and EDID were defined, there was no standard way for a graphics card to know what kind of display device it was connected to. The EDID is often stored in the monitor in a memory device called a serial PROM (programmable read-only memory) or EEPROM (electrically erasable PROM).
Many software packages can read and display the EDID information, such as read-edid for Linux and DOS, PowerStrip for Microsoft Windows and XFree86 for Linux and BSD unix.
Now that we know how many pixels are in a 4K image the next thing we need to know is, how much bandwidth does it take to distribute that information?
Depending on the number of pixels, color depth and refresh rate, the 4K bitrate can range between 3.5 and 20 gigabits per second (Gbs). Sending a full 4K signal, that is 4096 x 2160 with a refresh rate of 24 Hz will require nearly 10.2 Gbs. Many professional wireless microphones use the same frequencies as broadcast television stations.
The most effective solution for broadcast television interference is to avoid using frequencies of local active TV channels. A mic-level or microphone-level signal is the amount of voltage that comes out of a microphone when someone speaks into it - just a few ten-thousandths of a volt. To attenuate a line level signal down to microphone level, the A15LA attenuator can be used.
Where safety is a concern, choosing a multimeter is like choosing a motorcycle helmet, if you have a a€?ten dollara€? head, choose a a€?ten dollara€? helmet. The good folks at Fluke have put together a truly informative and important guide on the subject. 4K has made some hefty promises to provide better detail, texture, clarity and resolution by quadrupling the number of pixels being delivered.
As it becomes more widespread, 4K will be beneficial across digital cinema, TV, gaming, the internet, and commercial applications (video projection, digital signage, etc.). Translating to a resolution of approximately eight million active pixels (4096 pixels wide by 2160 vertical high), 4K is delivered in an uncompressed format. Due to bandwidth requirements, the industry hasna€™t agreed on which cabling options are best suited to deliver 4K signals over longer distances. The answer is through the use of phantom powera€”power sent over the same wire pairs used for data. Electricity has a low frequency of 60 Hz or less, and data transmissions have frequencies that can range from 10 million to 100 million Hz.
For the best speaker damping and least amount of power loss you will want to use the heaviest gauge that is practical. In the non-professional HiFi world ita€™s common to use the 3 pole connector for stereo signals (headphones) and the 2 pole connector for mono signals.
In the professional broadcast and audio industry the 2 pole connector is used in combination with unbalanced cables for short and interference insensitive transmittals (guitar cable). For more sensitive applications like digital transmissions or longer lines it is the custom to use 3 pole connectors together with balanced cables (to avoid EMI - electromagnetic interference), but ita€™s still a mono signal (balanced mono signal). HDMI over IP creates endless possibilities in corporate or residential environments by enabling HDMI source(s) to be connected to your screen(s) via an existing or new local area network, saving both time and money on the installation of a new cable infrastructure. Whether using HDMI over IP set-ups a single source to screen, single source to multiple screens, or in a matrix format (multiple sources to multiple screens), the use of an HDMI over IP System will make your installation simple and user friendly.
Control and set-up of the MuxLab system is taken care of using the MuxLab HDMI over IP dip switch configurations or the Management Software thus giving any user on the same network complete control over source to screen configuration a€“ whether on-site or not! Be it a digital signage project, corporate system, control room environment, bar or restaurant displays, or general audio-visual distribution systems, consider a HDMI over IP System as a solution as it provides flexibility and is economical, with the ability to add and extend your system over time. Wireless microphone and monitoring systems have become standard equipment for musicians, broadcasters, theatre productions, television shows, and sound contractors alike. The transmitter accepts a (mic or line) input signal, converts it into an RF (radio frequency) signal, and then transmits it. The receiver picks up the transmitted RF signal, converts it back into an audio signal, and then outputs it for mixing and amplification.
Using the ComprehensIve Guide to Setting Up, Configuring and Using Evolution Wireless G3 Systems guide from Sennheiser, we see that evolution wireless G3 systems elegantly solve two classic challenges: avoiding interference and building complex, multi-channel systems. From small clubs to boardrooms to Broadway stages or stadium-sized concert halls, Sennheiser evolution wireless G3 is used with confidence every day by professional users the world over. A recent FCC survey found that 80 percent of broadband users in the United States dona€™t know the speed of their broadband connection. The first thing a system designer needs to know about a fiber optic link is how much optical loss will be experienced between the end points of any fiber optic cable. You will need two devices to determine the optical loss measurement, an optical power meter, such as the FiberlinkA® 6650 and a light source. Now, if youa€™re going to put a microphone super close to an amp, it better be able to handle some high SPLs (sound pressure levels).
Technical transmitter monitoring cannot guarantee that a listener using an FM radio can hear the station with good quality reception. Operators in control centers can simply use a common media player to listen to the stream encoded by the Instreamers.
Obviously, confidence checking or "listening in" is not limited to radio stations a€“ many other applications of this Barix solution have been installed or can be envisaged, covering everything from monitoring whales to surveillance applications. Selecting the right reference monitors and setting them up correctly in your mixing environment is one of the most critical elements in creating mixes that will translate to any speaker system. Fortunately, a good monitoring setup is possible on any budget and the good folks over at Presonus have put together a brief, yet in-depth tutorial on selecting and configuring studio monitors.
Although use of a Wet Cleaning process largely avoids issues of scratching, using a solvent cleaner can also present problems. Since IPA is the traditional chemical commonly used for both end face cleaning and for fiber preparation before fusion splicing, it has achieved a€?universal solventa€? status over the years. To overcome the problems inherent in using IPA for cleaning fiber optic connectors, application specialists at Chemtronics recommend using a proprietary cleaning solvent called Electro-Wash PX Fiber Optic Cleaner.
To minimize battery change disruptions, careful consideration should be given to the power requirements of the equipment and the requirements of the shoot; consider not just the tape length but the amount of time the camera will be "hot". Taking a minute or two here will save you time, money & aggravation, as your camera is only as good as the battery system that powers it.
Attenuators are used with single-mode fiber optic devices and cable to filter the strength of the fiber optic signal.
But when two fiber devices connected with single-mode fiber cable are close to each other, the signal may be too strong.
Because ita€™s probably not feasible to move your fiber equipment farther apart, the easiest solution is to attach an attenuator to each fiber device. Before selecting an attenuator, you need to check the type of adapter on your fiber devices.
First let us lay some groundwork: audio systems can exhibit "hum" and they can exhibit "buzz", which are two separate situations.
Sixty(60)-hertz hum (fifty (50) hertz internationally) is a result of having a ground loop in the audio system. Another cause of system "hum" is electrically induced, such as having a very sensitive component too close to a power transformer. This week wea€™re taking a moment to spotlight Larry Villella of ADK Microphones and TapeOp Magazine. Larrya€™s custom shop and 3 Zigma line of microphones have captured performances by many acclaimed artists, including Ray Charles, Chick Corea, Burt Bacharach and The Manhattan Transfer. Discussions surrounding whether or not to test a fiber channel with the patch cords have been unclear. In reality, the main deciding factor for whether to test the channel with the patch cords included or to just test the permanent link depends on the specification provided by the end user or their consultant. If after checking the spec the question still remains as to whether or not patch cords should be included in channel testing, consider the fact that patch cords are factory terminated and offer a lower risk of defect and errors.
Sometimes it is also not logistically feasible to test the channel with the patch cords because they are often not in place during initial testing, before active equipment is installed and up and running.
While most should not have to worry about testing the channel with the patch cords (unless ita€™s specified), the fact remains that sometimes things can go wrong. Another key consideration is whether or not typical insertion loss values or maximum insertion loss values are being used to design the channel. While not necessary for achieving certification on an end-to-end Belden FiberExpress channel, we recommend using maximum insertion loss values when designing channels and testing the channel with the patch cords whenever possible.
And if at first, you only tested the permanent link and then experienced higher-than-normal bit error rates once the active equipment was up and running, it might be time to retest the channel with the patch cords in place. The spatial resolutions of the two also differs in that while both formats display 2160 px high, UHD has a width of 3840 px while 4K has a width 4096 px.
Communications Speacialties has a wide range of 3500 Series Fiberlink products to support the transport of multiple 3G-SDI signals over single and multiple fibers. UL listed means that a product has been submitted to Underwritera€™s Laboratories for safety testing in certain categories.
APC surge protectors undergo stringent testing by IEEE, and are awarded "let-through ratings", which indicate the maximum voltage level that can possibly reach your equipment after a surge or voltage spike has passed through an electric surge protector. While most other surge suppressors continue to let power through even after their circuits have been damaged - leaving your equipment exposed to future surges, APC's SurgeArrest uses a fail safe design, which means that once the circuit of an APC SurgeArrest has been compromised the unit disconnects equipment from the power supply ensuring that no damaging surges reach your equipment.
Whether you are recording vocals, guitars, drums or even a piano, proper microphone placement is the first step in getting great sound. For the most part, the microphone's axis (or center line) should aim toward the nose and mouth to obtain the fullest sound. In most wireless microphone applications, there is rarely a single element that causes the whole system to fail, but rather an aggregation of bad practices that leads to poor performance. Return on investment is everything for small and medium sized businesses looking to buy pay-per-click advertising on a budget. With many different features and settings to navigate through, running a successful PPC campaign is easier said than done. When starting a PPC campaign for the first time, focus on just one or two of your best products or services.
Ideally, one of your business offerings is both popular with customers and offers a high-profit margin. Be sure to stay away from promoting everything your business sells- if it’s a wide range of offerings, your budget may be stretched too thin to gain traction.
One of the many important aspects in determining the success of a pay-per-click advertising campaign is Quality Score. One way to achieve strong Quality Scores is by effectively structuring the campaigns, ad groups, and keywords within your account. Within Google AdWords, there are several different campaign types but there are three main mediums for showing paid ads that most advertisers should care about. One of the most common errors made by new advertisers on AdWords is targeting more than one network at a time. On a campaign by campaign basis, advertisers can geotarget ads to certain specific regions.
In the campaign settings, advertisers can easily target searchers geographically by country, state, county, DMA, city, and even zip code. By default, new campaigns will target both the entire United States and Canada so make sure to check and adjust targeting before activating any campaigns. Found in the Settings > Devices tab within your campaign, you can adjust bids for impressions on mobile devices.
If users from smartphones are not converting into customers, negatively adjusting your mobile bid can save money for searches occurring on other devices like desktops or tablets.
When building out your keyword list in your tightly-themed ad groups, utilize phrase and exact match to start. Going this route will limit the number of impressions and clicks your ads will be eligible for, but it will also help increase your clickthrough rate. By starting with what should be the most relevant search queries triggering your ads, conversion rates and return on investment will see benefits. Description Line 2 (35 character limit) – What is the desired action for the searcher once they click?
Following this outline will help create concise and effective text ads that help promote your product or service. One of the great benefits of PPC is the ability to accurately track individual clicks to conversions and sales.
Now that you have conversion tracking in place, you can use that data to drive your advertising decisions. One of the biggest mistakes inexperienced advertisers make is creating their campaigns, setting them live, and then checking back in on them a month later or never again. If you don’t have time to monitor your campaigns, check out our PPC packages for companies on a budget. An article full of bite-sized tips always goes well because readers always find something to take home. Description: This podcast covers several new topics, including celebrities who are convinced the earth is flat, the growing threat that is Zika virus, and how HIV is eluding CRISPR treatments. Keywords: glycans, glycobiology, podcast, Pascal Gagneux, sperm, evolution, biolegend, science, chimpanzees, non-human primates, Neanderthal, pathogen, Ajit Varki Having difficulty playing this episode? Description: In this episode, we discuss some a variety of current scientific news, including the discovery of woman who can smell Parkinson's disease, a correlation between bovine leukemia virus and breast cancer, using an individual's microbial cloud to identify them, and how we're using specialized antibodies to combat both HIV and cancer. Keywords: immunology, comics, cancer, chimeric antigen receptor, T cells, gene therapy, hypoxia, immune checkpoints, goinvivo, tumors, podcast, pedromics, pedro velica Having difficulty playing this episode? Keywords: neuroscience, neurodegeneration, Parkinson's disease, microbes, microbial, gut microbiome, bacteria, asthma, allergy, leukemia, cancer, AML, antibody, virus, cow, bovine, breast cancer, HIV, AIDS Having difficulty playing this episode? Description: Special guest and global health scientist Jessica Taaffe joins us to discuss educating the public, funding research, and the passion needed in scientific role models.
Keywords: global health, Jessica Taaffe, HIV, ebola, education, Bill Nye, Neil degrasse Tyson, vaccines, anti-vaxxers, world bank, funding, research, NIH, primates, biolegend, podcast Having difficulty playing this episode?
Description: The podcast team discusses the potential anti-venom shortage, a wasp-venom derived protein for cancer therapy, 30,000 year-old viruses, and a new hominid species discovered in South Africa.
Keywords: venom, anti-venom, snakebites, wasp venom, Fav-Afrique, MP1, Polybia-MP1, Polybia paulista, phosphatidylserine, annexin V, cancer cells, homo naledi, fossils, Mollivirus sibericum, viruses, Siberia, giant viruses Having difficulty playing this episode? Description: On this podcast, we discuss current events in science, including recent outbreaks of polio in the Ukraine and Legionnaire's disease in California and Illinois.
Keywords: polio, Legionnaire's disease, outbreaks, virus, bacteria, saturated fats, obesity, microbiome, mice, inflammation, leptin, neurons, brain, exercise, neutrophils, T cells, infection, lungs, influenza, open-access, journal, the wall of polio, science, podcast, virology, immunology Having difficulty playing this episode? Description: Glioblastomas and medulloblastomas are two common forms of brain cancer that afflicts thousands of people a year.
Description: We cover the latest science current events, including the new Ebola vaccine, limb regeneration, being hangry, and Kim K's flub with the FDA. Keywords: Kim Kardashian, ebola, vaccines, anti-vaxxers, current events, limb regeneration, repair, hangry, science, podcast, food and drug administration, morning sickness, FDA Having difficulty playing this episode?
Description: In our latest podcast, we talk about narcolepsy and the fight between local colleges for the rights to an Alzheimer's disease database.
Keywords: UCSD, USC, University of Southern California, University of California San Diego, Alzheimer's disease, Pandemrix, narcolepsy, sleep, Paul Aisen, BioLegend, science, podcast Having difficulty playing this episode?
Description: Ed Chen and Rea Dabelic, two members of the BioLegend Technical Team, take over the podcast this week to discuss Selman Waksman (the Father of Antibiotics), tuberculosis, and giving credit where its due. Keywords: Selman Waksman, Albert Schatz, streptomycin, neomycin, antibiotics, Neosporin, tuberculosis, granulomas, macrophage, biolegend, immunology, mycobacterium tuberculosis, podcast, patents, inventions, royalties, tuberculin skin test, lab assistants, consumption, avastin, microbiology, birthday blog, controversy, Nobel prize Having difficulty playing this episode?
Description: We welcome Chris Gould to discuss neuroscience, protein misfolding, aggregation, and prion-like proteins in neurodegenerative diseases. Keywords: neuroscience, tau, a-synuclein, alzheimer's disease, parkinson's disease, neuroinflammation, prions, Creutzfeldt-Jakob disease, mad cow disease, kuru, cannibalism, brain, aggregation, protein misfolding, blood brain barrier, lymphatic system, chris gould, biolegend, immunology, podcast, neurofibrillary tangles, lewy bodies, inclusion, Lou Gehrig's disease, ALS, amyotrophic lateral sclerosis, neurodegeneration, microglia Having difficulty playing this episode? Description: Neuroinflammation can be beneficial in some instances, but too much of it can cause any number of neurological diseases. Keywords: Kenya Cohane, neuroinflammation, neuroscience, alzheimer's disease, parkinson's disease, multiple sclerosis, tau protein, a-synuclein, aggregation, immunology, podcast, biolegend Having difficulty playing this episode? Description: Antibody therapies have become incredibly popular for the treatment of diseases, including cancer. Keywords: cancer, tumor, antibody therapy, therapeutics, immune checkpoints, PD1, PDL1, LAG3, TIM3, CD80, CD86, Galectin 9, MHC II, CTLA4, Pembrolizumab, Ipilimumab, Nivolumab, nanobody, melanoma, carcinoma, biolegend, science, podcast, merck, amgen Having difficulty playing this episode?
Description: CRISPR is an amazing technology originally discovered in bacteria as a defense mechanism against invading foreign genetic material.
Description: Despite our advances in science and technology, it seems like more and more people are outright denying scientific principles and concepts like evolution and climate change.
Keywords: podcast, biolegend, immunology, biology, climate change, ted cruz, NASA, jim inholfe, brain, neuroscience, music, ignorance, science, education, ivory tower, spock, star trek, leonard nimoy, evolution, fluorine, fluoridination, fanta, Tourette Syndrome, nerdy, nerds, nerd, fandom Having difficulty playing this episode? Description: In this podcast, we discuss bacterial hot spots in New York, a brand new antibiotic found in dirt, telomeres and aging, and an interesting article published in 17 scientific journals about Cocoa Puffs. Keywords: podcast, podcasts, New York, subways, bacteria, antibiotics, MRSA, antibiotic resistance, telomeres, cocoa puffs, teixobactin, beer, alzheimer’s disease, parkinson’s disease, aging, BioLegend, immunology, biology, science, grad school, scientific journals Having difficulty playing this episode? Description: In this podcast, we take a look at how a lack of vaccinations has once again caused an outbreak of a once-controlled disease, the efficacy of the flu vaccine this year, and why people are clamoring to know if their food contains DNA. Keywords: podcast, science, measles, vaccinations, vaccines, anti-vaxxers, Jenny McCarthy, research, cures, Disney, Disneyland, outbreak, flu vaccine, influenza, flu, dna, food, GMO, genetically modified organism, antibiotics, virus, viruses Having difficulty playing this episode?
Description: In this podcast, we examine why it’s so hard to transition from animal research into human cures and Obama’s latest visit to the NIH.


Keywords: podcast, president, Obama, Barack Obama, BioLegend, NIH, National Institutes of Health, science, Ebola, HIV, Human immunodeficiency virus, AIDS, acquired immune deficiency syndrome, translational models, animal models, translation, research, bench to bedside, cures, vaccines Having difficulty playing this episode?
Download free ESTIMATING SPREADSHEET (.xls)  to use with Excel to calculate costs and track expenses. The estimating spreadsheet that you have listed can be a very powerful and useful tool for any contractor.
If you have selected specific products, such as windows, carpeting, tile, cabinets, etc., you will get a more accurate cost than by using an “allowance” that may not cover the product you eventually select. Another approach is to use unit-cost estimating guides, which give average costs for various types of work based on units such as square feet, linear feet, and so on.
Finally, the largest errors in cost estimates are usually items that you have accidentally left out.
If you do your homework, you should be able to come up with a reasonably accurate estimate. Each arrangement is used for a specific type of instruction to maximize the efficiency of the lesson being taught. Because a hub doesn't use management or addressing, it simply divides the 10- or 100-Mbps bandwidth among users. Switches divide LAN data into smaller, easier-to-manage segments and send data only to the PCs it needs to reach.
Select a stackable hub connected with a special cable so you can start with one hub and add others as you need more ports. Ethernet switches intended for large managed networks feature built-in management, usually SNMP.
Most Ethernet switches operate at "Layer 2," which is for the physical network addresses (MAC addresses). A modular switch enables you to populate a chassis with modules of different speeds and media types.
Some Ethernet switches can be connected to form a stack of two or more switches that functions as a single network device. Phones in this impedance range may be directly plugged into the headphone jack routinely found on recording and playback equipment. This shows that the advantage of high impedance headphones is that they can be used with almost any amplifier output without any risk of being damaged by overload, and you can connect up to 10 or more pairs to the same output. The concept (simply stated) being this - and there are more complex answers having to do with phase coherency, time alignment, and other big words, but I did say "simply stated" - if the woofers are at the outside of the image, the sound comes from everywhere anyway so their placement would probably be OK on the outside of the image. They achieve this by continually switching or "hopping" from one transmission frequency to another throughout the Spread Spectrum band. If interference is encountered at any particular frequency, the built-in error correction detects it and resends the data packet at the next frequency hop. Ia€™ve found that the output is quite low compared to some other microphones that I have used in the past and ita€™s quite noisy when I turn it up to get enough gain.
Many Dynamic and ribbon microphones such as the Shure SM7 and the EV RE-20 have a low output compared to other microphones such as condensers. At SPL levels above 160 dB some mechanical problems might occur (for example the voice coil might crash onto the magnet) but these SPL levels are very hard to find in real world.
However if using dynamic microphones at high SPL levels a user should be aware that the very high voltage (up to several volts) delivered by the microphone might cause problems when connected to mic preamps.
Some VGA connectors in personal computers provided a basic form of identification by connecting one, two or three pins to ground, but this coding was not standardized. 4K has a data stream of 8.8 million pixels but what we need to know is the bitrate of the 4K image.
Likewise sending an Ultra-HD signal, that is 3840 x 2160 with a refresh of 30 Hz will also require nearly 10.2 Gbs.
Though it is not possible for an wireless mic receiver to "hear" anything from a digital TV transmission, the DTV signal acts as a very strong broadband radio noise source. Television transmitters may operate at power levels up to several million watts while wireless microphone systems typically operate at less than 50 mW (fifty one- thousandths of one watt!) of output power. Indoor setups are at less risk than outdoor setups because building structures will usually strongly attenuate TV signals. Aux-level inputs and outputs are found on many kinds of equipment, including tape recorders, CD players, and some computer sound cards.
Engineers who analyze multimeter safety often discover that failed units were subjected to a much higher voltage than the user thought he was measuring. What performance specification should you look for, especially if you know that you could be working on high-energy circuits?
It describes in full detail the how's and why's of the subject and how to get the job done and stay safe every time. Also known as ultra-high definition resolution, 4K presents four times the picture resolution that standard high-definition resolution offers. Most 4K displays and panels are larger in size (at least 55 inches) because the benefits of ultra-high def resolution are less visible on smaller displays. Table 1 below illustrates the data rates that are required to support 4K resolution for different color options at 60 frames per second. To support ultra-high definition resolution and maintain color information, higher data rates are needed as shown in Table 1. Signal integrity may be a major issue for proper 4K connectivity; noise interference and increased distances can impact signal quality.
However, Gigabit Ethernet or 1000BASE-T uses all four pairs of wires, leaving no pairs free for power. When the same pair is used for both power and data, the power and data transmissions dona€™t interfere with each other. Their major applications are the connections of instruments like guitars, keyboards, headphones. The MuxLab HDMI Over IP Extender with Management Software (500752) allows up to 16 sources to be connected to up to 200 screens.
Featuring infra-red (IR) pass through, control of sources is possible from a remote screen location. Sennheiser evolution wireless G3 offers 1,680 tunable UHF frequencies across 42 MHz and an easy-to-use "Easy Setup" function that scans for interference and recommends "free" frequencies that will yield the most reliable operation. Know the speed you need - for example, whether you need a fast speed for video, or whether a slower speed will do.
Many people dona€™t know what speed they are paying for, or what they are getting compared to what the broadband provider is claiming to offer.
If youa€™re choosing a broadband provider for the first time, consider speed, price, and service.
Factors like a slow router or computer, using the Web at peak times, or using high-bandwidth applications can slow down your connection. All fiber optic transmitters and receivers will specify a maximum amount of optical attenuation, or loss budget, that can be tolerated before the equipment will no longer work properly.
This can be an existing fiber optic transmitter or a light source such as the FiberlinkA® 6654 Dual Wavelength Single Mode Light Source.
It is preferred that measurements be made at both wavelengths, if possible, as the optical loss can vary significantly as the wavelength varies when multimode fiber is used.
While the electric guitar can certainly be recorded directly, there are times when there is simply no substitute for the sound of a real amplifier. Placing the microphone roughly 4 inches from the grill, aimed directly at the center of the loudspeaker will produce the most a€?edgea€? to your sound. By angling the microphone slightly off axis and towards the wall, you can add more a€?room sound.a€? Experimentation is a key factor in achieving the sound you are looking for. The figure eight pattern picks up sound to the front and back of the mic without any creative placement. If the amplifier sits on a carpeted floor, you are more likely to reduce the amount of brightness in the sound. Broadcast Australia operates a monitoring system which uses tuners and Barix IP audio encoders, allowing support staff to listen in remotely, all over Australia.
If listeners complain, the technical staff of Broadcast Australia can use a tuner within the reception area of that specific transmitter and "listen in", remotely.
In addition to the operator listening in person, the Instreamer device can also automatically trigger an alarm if the signal quality fails to meet certain predefined criteria.
Just about anyone who has ever mixed a record has experienced the frustration of getting a mix that sounds amazing in their mixing environment, only to pop it onto their car stereo and wonder in confusion "where did the lead guitar go?" The likely culprit is their studio setup. Investing in a high-quality studio monitors will make mixing easier and less fatiguing and will help you to become a better engineer. Even the highest grade of 99.9% IPA is unable to remove both ionic and complex non-ionic contaminants such as buffer gels, lubricants and these oily residues in combination with dusty soils.
Without some way to limit that low frequency sound, you can wind up shortening the lifespan of the drivers considerably. Depending on the type of attenuator attached to the devices at each end of the fiber optic cable, you can diminish the strength of the light signal a variable amount, measured in decibels (dB).
Single-mode fiber is designed to carry a fiber optic signal long distancesa€”as much as 70 kilometers (or 43.4 miles). Just as sunglasses filter the strength of sunlight, attenuators filter the strength of the light signal transmitted along single-mode fiber cable.
Attenuators typically fit into any patch panel equipped with FC, SC, or LC adapters that contain either PC or APC contacts. This is where there are two or more ground references in the system, and current is flowing from one ground point to another. Power amplifiers have large power transformers and can induce a magnetic field into other equipment.
His microphones have been endorsed by several Grammy award winning engineers, and the ADK Custom shop and 3 Zigma Audio have both individually won the prestigious PAR Excellence Award for Innovation. The answer to this long-standing question is a€?it depends.a€? Leta€™s take a closer a look. Installation of the permanent link typically has much more impact on the performance and insertion loss of the channel.
They are also regularly moved or changed during reconfigurations without necessarily re-testing the channel. Fiber patch cords can have dirty end faces or they could be damageda€”especially since they are a moveable component.
If using typical insertion loss values, it is important to know how the patch cords impact the channel. Testing the channel with the patch cords doesna€™t take any extra time, and ita€™s better to be safe than sorry. This last attribute makes scaling and displaying UHD images on HDTV sets and monitors a rather straightforward process. Also known as "frames per second (fps)" or "frame rate" this refers to how many complete images are drawn on the screen each second. If you clap your hands and get an echo effect, you should consider adding some carpet, blankets, drapes, or other sound absorbing materials. Getting too close to the microphone tends to increase bass response and can create problems with plosive sounds - those popping Ps, Bs, Ds, and Ts (more on this in a moment). It's not a bad idea, however, to experiment angling the microphone slightly away from dead center so as to help minimize plosives.
When dealing with radio frequencies in particular, considerations such as antenna size, orientation, and proper cable selection, are important factors not to be overlooked. This handy guide from Shure presents a series of good practices for most typical wireless audio applications.
Factor in a typically smaller-than-your-competition budget and competing successfully can be daunting. The higher the QS, the more relevant your ad placement is to a search query and the less you will pay for that ad position. By segmenting campaigns and ad groups into tightly-knit themes you can effectively match keywords, ads and landing pages to help boost QS. These are traditionally static image ads but they can also be text ads or even animated banners.
For example, a dentist in Atlanta doesn’t want their ads showing to searchers in Los Angeles looking for a dentist. Conversely, if mobile visitors are important to you, increasing your mobile bid adjustment will help increase the chances of attracting visitors on smartphones. Matching the keywords in an ad group with the ad text will help with relevancy and Quality Score.
Typically when using extensions, advertisers will see an increase in engagement metrics like clickthrough rate and conversion rate. Calculating a true return on investment is much more realistic for advertisers who set up conversion tracking.
You can utilize AdWords’ build in tracking, Google Analytics goal or event tracking, or a third-party web analytics tracking platform. Using the valuable conversion data your campaigns are collecting to drive decisions will always produce stronger results. We examine increasing cases of diabetes and how finding the "secret sauce" for beta cells might fight this trend. Recent studies have reported a link between Herpes Simplex Virus 1 (HSV-1) and increased AD risk. This blog will cover the major apps provided by BioLegend relevant to research steps from conceptualization to discovery, as well as a few useful apps not from BioLegend. Look back at this year’s most popular posts and find out which blogs our writers enjoyed composing. Our latest podcast invites guest Pascal Gagneux to discuss his thoughts on glycans, evolution, and sex cells!
Learn what makes this virus dangerous and why some countries are advising women to avoid pregnancy.
Although respiration is considered the more efficient pathway because it has more ATP output per molecule of pyruvate, rapidly-dividing cells sometimes choose fermentation instead.
Almost 50 BioLegend employees took part is this fun race which supports awareness for local charities trying to bring about positive change in San Diego.
By controlling key molecules involved in regulating the immune response, researchers have obtained very promising results in the treatment of certain cancers. Read this blog to learn more about Mazumdar-Shaw’s humble beginnings and how she built her empire by literally starting in her garage. Scientists would like to reanimate this virus to learn more about its origins and the evolution of giant viruses.
We also cover recent research linking high-fat diets with a change in the gut microbiome and obesity-linked inflammation, as well as the role that leptin plays in the rewarding effects of exercise. Immunotherapy is a groundbreaking option because it can hypothetically target cancer cells specifically while leaving healthy cells intact, which can decrease the number of adverse effects associated with current treatment options. Some may notice a modest decline in their mental abilities, including memory function, while some may develop neurodegenerative diseases as they age.
Tune in to hear our guest Mohar Chattopadhyay discuss its symptoms, treatments, and research.
Using bioinformatics methods, they reconstructed the evolutionary tree of AAV and made viruses that represent different branching points.
Resistance to anti-microbial drugs occurs naturally, however, the misuse of these drugs, among other factors, is helping the spread of multidrug resistant microbes. However, communication between the CNS and the periphery occurs through unknown mechanisms.
The cause of this disease is unknown, and although there is presently no cure, there are some treatment options such as medication and surgery to manage its symptoms. Learn more about neuroinflammation and the newly discovered central nervous system lymphatic system with our special guest, Kenya Cohane. They are highly similar to peripheral macrophages and respond to pathogens and injury by becoming activated. But, how does this peer review work and why have so many controversies sprung up recently about this system?
The Neuroinflammation page shows how neuronal injury can lead to immune infiltration, and how differential activation of microglia can be either neuroprotective or neurotoxic. This versatile system can accommodate your experimental needs, whether you are doing positive or negative selection.
In cancer, it may be beneficial to prevent interaction of "immune checkpoints", which can inactivate T cells.
This time we contribute to science enrichment classes in elementary schools throughout San Diego. In this blog, we discuss the potential impact of sequencing or genotyping individuals and why the FDA temporarily shutdown one company for marketing their kit as a medical device. Quite often, they manage to subvert a highly evolved immune system and proliferate inside a host. It allows researchers to listen to important talks, collaborate, and see what companies have to offer. Researchers are now repurposing this for useful applications in like increasing crop size and treating diseases like HIV and cancer.
With open source sharing of 3D models, anyone with access to a 3D printer can print tube racks, 96 well plates, gel combs, and many other things. We also take a look at some of the inner workings of the brain including synchronization, implanting false memories, and how it blocks distractions.
In this blog, we discuss one of the biggest scientific scandals in recent memory: The publication of high-profile stem cell papers in one of the most reputable journals that was riddled with errors, and, in at least a couple of spots, obvious data manipulation. Depending on the requirements of your assays, as well as your equipment at hand, you may need to use a colorimetric assay. This blog discusses the implications of red meat consumption in humans and the characterization Neu5Gc as a xeno-autoantigen capable of inducing low level inflammation leading to cancer.
These are called plantibodies, and in fact, there are already companies developing therapeutic antibodies using them.
There we showcased some of our newly released products, such as LEGENDplex and newly aquired NeoClone antibodies. Our blog examines possible causes, treatments, and mechanisms of action for food allergens. Keywords: BioLegend, science, podcast, podcasts, immunology, neuroscience, memory, alcohol, beer, neurons, ion channels, NMDA receptor, redox, oxidation, reduction, calcium, potassium, sodium, hippocampus, GIRK receptor, addiction, Karthik Bodhinathan, Stuart Lipton Having difficulty playing this episode? Here is a post to show some of the cool costumes and pumpkin carving contest we had this year.
Nanobodies®, a tenth of the size of a normal antibody, have multiple advantages over conventional antibodies. The construction estimating spreadsheet includes formulas to track cost estimates, actual costs, variances, payments, and balances due. I was just wondering: you have it listed as a free as a document, yet when I downloaded it to try to use it, it comes up as protected and a password is required to access it.
You can enter cost data and do calculations, but cannot edit work items or make other modifications (other than the addition of a few items at the end of each work category). For many costs, you can usually get bids from subcontractors, home centers (that do installed sales), and building supply companies that specialize in flooring, windows, and other product categories. These are useful for ballpark estimates and as a backup to check your own estimate, but I wouldn’t rely on them to develop a precise project cost. However, it’s always a good idea to budget 5% to 10% extra for changes, hidden costs, and other unknowns. The more flexible the furniture, the easier it will be to create different seating styles to fit the immediate need. If two stations are transferring high volumes of data between them, the network performance of all stations on that hub will suffer.


Layer 3 switches use network addresses, and incorporate routing functions to actively calculate the best way to send a packet to its destination. Because you can easily change modules, the modular switch is an adaptable solution for large, growing networks. Higher impedances, such as 600 ohms, are more useful in studio installations where many units may be wired in parallel for studio monitoring applications.
You can see that very little power is needed to drive a stereo headphone pair to very high listening levels. So it is clear that 600 ohm phones and the lower impedance models should not be intermixed in the same application. The max SPL this combination was able to produce was 150 dB and the THD level recorded by a MD 421 was below 1% (produced by the driver not by the mic). To accurately monitor what is recorded on the hard drive or tape machine, the monitoring system also has a flat response at the listening position. It is what enables a modern personal computer to know what kinds of monitors are connected to it.
That means there are 4096 pixels laid out horizontally across the display and 2160 pixels arranged vertically across the display for a total of a little more that 8.8 million pixels in the 4K image.
Bitrate not only takes into consideration the number of pixels but also examines the color depth and the refresh rate of the image being sent. For this reason it is unwise to choose wireless microphone system frequencies that fall in an active local TV channel block. Nevertheless, since the locations and assignments of television stations are well known it is relatively easy to choose wireless microphone system frequencies to avoid them in a particular area. However, wireless microphones could be used on television channels 22 and 24, as this would avoid the active TV channels. Connecting a microphone to a line-level input will result in almost no sound at all, because the signal is so faint that the line input cannot hear it. A mixer will not only boost a microphone level signal up to a line level signal, but it will also combine multiple signals together into a single output. There are the occasional accidents when the meter, rated for low voltage (1000 V or less), was used to measure medium voltage, such as 4160 V. The task of defining safety standards for test equipment is addressed by the International Electrotechnical Commission (IEC).
Because electricity and data function at opposite ends of the frequency spectrum, they can travel over the same cable. The shorter the run, the smaller gauge you can use with minimum power and damping factor loss.
Power to both transmitter and receiver units are taken care of when used with a PoE (Power over Ethernet) LAN Switch giving minimal power requirements at the source and more importantly at the screen location. Some of the most important considerations in selecting the right wireless system for an application is avoiding sources of potential interference, the number of channels required, the number of and type of microphones needed, antennas, mounts, accessories and the list goes on. For setting up multi-channel systems, evolution wireless G3 includes 20 banks of coordinated frequencies, each set calculated to work together without interference - an undesirable effect called intermodulation. Choosing the right broadband provider and plan for your needs can be complicated, but there are strategies for navigating the process. When single mode fiber is used, measurements should be made at 1310nm as this is the most common wavelength used with single mode fiber. While digital modeling and processing systems certainly have their place, they may not have the same level of realism as the sound from an amplifier. A good instrument mic can perform well on a variety of instruments, including a guitar cabinet. This is achieved by deploying Barix Instreamer devices - reliable IP audio encoders a€“ with FM tuners attached, all over Australia and connecting them via a nationwide IP network.
Some advocate a Dry Cleaning technique using lint-free fabrics, while others prefer a Wet Cleaning Process, which employs a solvent cleaner.
IPA can leave a thin layer of such contaminants on the end face, again resulting in signal degradation.
Filtered and packaged in a 5-ounce aerosol can that prevents contact with outside air prior to application, this cleaning solution effectively removes the types of soils most commonly encountered in Outside Plant and OEM operations. Atlas Sound offers a full line of DSP products that can meet any horn speaker protection needs.
This provides unlimited flexibility for selecting a combination of different batteries to cover all your application needs. Fiber devices send this signal with great force to ensure that the signal, and your data, arrive at the other end intact. Within the attenuator, therea€™s doping that reduces the strength of the signal passing through the fiber connection and minute air gaps where the two fibers meet.
In addition to the type of adapter, you also need to determine the necessary attenuation value, such as 5 or 10 dB. If you suspect this may be the cause of your problem then placing more distance between the two components is the only practical solution. Even a negligible loss on the patch cord can impact the design and ultimately the channel performance. It also facilitates the display of HDTV signals onto a UHD screen without geometric distortion.
Getting too far away makes the microphone more subject to picking up room ambience - a sound that creates the effect of the vocalist being in a bowl.
Further, you should always place a "pop" filter between the vocalist and the microphone, with the pop filter positioned 3 - 4 inches in front of the microphone.
In the case of microphones and loudspeakers, sound waves are converted to electrical impulses, and vice versa.The proliferation of wireless audio systems has introduced yet another category of transducer to professional audio, the antenna. Small business owners and marketers must be precise when looking to win with PPC advertising. No matter which works best for your business, conversion tracking is essential to determine ROI and optimize your account. Whether it’s determining messaging for ad copy, keyword bids, or campaign budgets, data is everywhere in your account. Making small adjustments to campaigns can go a long way and help save a lot of money over time.
And, we talk about Sean Parker's new $250 million grant to establish the Parker Institute for Cancer Immunotherapy. In this blog, we discuss a landmark case study, and human trial, in which gene editing was successfully used in the treatment of leukemia.
As hard as it is to secure funding, prioritizing how to stay within the lab’s budget is an equally daunting task. The use of monoclonal antibodies against some of these molecules, called immune checkpoint receptors, have provided some answers and hope in the search for a cure. Tune in to hear our discussion on the release of an open-access journal that will publish ideas as well as data and results, and other exciting research on influenza infection. In this blog, read about adoptive cell transfer, the process of training and expanding a patient's own immune cells and placing it back into the patient to fight the cancer with their own cells. Scientists are increasingly interested to understand the factors and mechanisms that may impact brain health.
These viruses were used to circumvent detection by the immune system to successfully deliver genes to various mammalian tissues.
This is a serious public health issue at the moment, and if we don’t act with energy, there can be hard consequences. In this blog, we discuss a recent paper published in Nature that discovered that the CNS does, in fact, have a lymphatic system that can be used to communicate with immune cells in the periphery.
Read our blog to learn more about Selman Waksman, his work in antibiotics, and the controversy over streptomycin. Read our blog to learn more about the correlation between the flu vaccine and narcolepsy, and the evidence to support or refute the hypothesis. Read our blog to learn about the work being done to uncover how bacteria can influence the mental state. This blog discusses the blood-brain barrier, which can be compromised under certain conditions, leading to immune cell infiltration and chronic neuroinflammation.
As part of their response, they secrete cytokines and chemokines, which help in the resolution of the inflammatory response.
The page also features IHC reagents for detection of neuroinflammation and a list of our neuroinflammation products. Learn more with our podcast about some of the more popular antibody and nanobody treatments. Read about BioLegend at IMMUNOLOGY 2015™ in this blog, and we’re excited for next year's AAI Annual Meeting! Check out our blog to learn how Joseph Lister turned it all around and why he is now known as "the father of modern surgery". In this post, we comment on the number of mechanisms that HIV, a retrovirus, has to escape the immune system.
Learn about BioLegend's involvement in scholarships, talks, and interesting facts about this year's host city, New Orleans. There's a battle brewing over the CRISPR patents with millions in funds (and profit) at stake. This allows for on-the-fly access to lab goods, and also nearly infinite customizability for lab supplies in your experiments.
The fallout after the retraction of these papers just goes to show that scientific misconduct is not worth the risk.
Luckily, our immune system has also “learned” how to deal with most of these pathogens, so we can eliminate most of these infections. Read through our blog to learn more about the logistics of picking out the right animal for you. Unfortunately, they also have their limitations and more research will be needed before their utility is completely known.
Our podcast with post-doc Francesca Soncin examines what you can expect.Too many post-docs in the pipeline?Plight of the Post-Doc Blog Keywords: post-doc, post doctoral, PhD, jobs, academia, industry, tenured, tenure, professor, podcast, industry, biotech, pharma, Francesca Soncin, science, grants, funding Having difficulty playing this episode? Can you send me the password to unlock the document, or is there a fee required for the use. A premium version of the Worksheet that you can edit or customize as you like is available for $9.95. This is time consuming, but you will be getting real costs assuming that you have accurately described the project (scope of work) to each company providing a bid. Hubs are good choices for small- or home-office networks, particularly if bandwidth concerns are minimal.
Very advanced Ethernet switches, often known as routing switches, operate on OSI Layer 4 and route network traffic according to the application. The 600-ohm models are more rugged than low impedance models in that the higher resistance coils are less susceptible to burn out than low impedance models.
Placing them on the inside of the image (ideally in an equilateral triangle) will create a more solid center image. So, "A" goes left with the woofer on the outside of your stereo image and speaker "B" goes right with its woofer on the outside of your stereo image. The Dubbing Stage must replicate this response so that the mix translates precisely to the Movie Theatre. EDID is defined by a standard published by the Video Electronics Standards Association (VESA). Connecting a line-level source (such as a CD player) to a mic-level input will cause the sound to be loud and distorted because the line signal is much stronger than what the mic input will accept.
Just as common, the knock-out blow had nothing to do with misuse - it was a momentary high-voltage spike or transient that hit the multimeter input without warning. In the other method, called Alternative B, two wire pairs are used to transmit data, and the remaining two pairs are used for power.
The longer the run, the heavier gauge you will need to minimize power and damping factor loss.
With the capability of high-definition 1080p images and audio up to distances of 330ft between transmitter and switch, then from switch to receiver, the HDMI over IP Extender kits exceed the standard distances of a point-to-point HDBaseT extender kit.
However, choosing the right equipment and frequencies for your application doesn't have to be a chore. With evolution wireless G3, building a reliable, interference-free multi-channel setup has never been easier! A small guitar amp can be just as effective for this application as a stack, because you dona€™t necessarily need to a€?cranka€? the volume. Youa€™ll target the cabinet but youa€™ll also pick up the cabinet sound as ita€™s reflected in the room (fig.3).
If youa€™re looking for a big reverberant tone, placing the amp and microphone in the bathroom is another popular technique. Using excessive amounts of IPA can also contribute to signal loss through a phenomenon know as a€?haloinga€?, which is thought to be caused by residual alcohol combining with ambient soils and moisture, resulting in a residue that can adhere to the end face. The hygroscopic nature of IPA combined with its relatively low volatility and intrinsically higher surface tension, can result in adhesion of microscopic particles to the end face surface. This line includes the ASP-MG24, a 2x4 loudspeaker processor offering full DSP configuration of various crossover types, parametric EQ, compression, delay, and graphic EQ. For instance you might want high capacity batteries when using on-camera lights or shoots needing long runtimes, medium capacity for regular shooting and a small lightweight battery as a backup or for low-power application needs.
Fiber grooves may also be intentionally misaligned by several micronsa€”but only enough to slow the fiber optic signal to an acceptable rate as it travels down the cable.
However, when using maximum insertion loss values, patch cords will not likely have an impact.
While vocalists may need to move about in order to hit those high notes, make every effort to maintain a constant distance from the microphone, as this will provide the greatest tonal balance. This will greatly increase your ability to achieve the most natural sounding recordings with minimal interference from plosive sounds.
As defined in the ARRL (American Radio Relay League) Antenna Book, a€?The purpose of an antenna is to convert radio-frequency electric current to electromagnetic waves, which are then radiated into space.a€? Attached to a receiving device, antennas can also work in the reverse fashion, converting the electromagnetic wave back to an electric current. Harvesting that data into actionable insights can help drive your overall business initiatives. Read this blog to get an idea about how much it costs to run an academic research lab in the U.S. BioLegend develops and manufactures world-class, cutting-edge immunological reagents for biomedical research, offered at an outstanding value. If you're able to score a perfect 100%, you'll win a goodie bag filled with BioLegend prizes. But these cells are also known for their harmful roles in neurodegenerative diseases and brain injuries, such as Alzheimer’s and Parkinson’s disease.
In this post, we comment on a number of mechanisms that Salmonella has to escape the immune system.
In this post, we comment on a number of mechanisms that Listeria has to escape the immune system.
You can use the BuildingAdvisor spreadsheet to estimate and track costs for both building and remodeling projects. This will at least give you a good ballpark estimate, although you may get better prices by shopping around for different types of materials. Because users connected to a switch do not have to share bandwidth, a switch offers relief from the network congestion a shared hub can cause. But we had to have a philosophy to build this speaker to, and the common wisdom (and technology) states tweeters in and woofers out.
Mid and highs being more directional should be spread out to give the listener a wider stereo image. Now a mix with the kick drum and bass guitar dead center (where the speakers arena€™t) should sound like you can close your eyes and reach out and touch them in that center space, where therea€™s no speaker! Note that the soundtracks for the release of movies on DVD's are re-mixed on flat response monitoring systems for reproduction in domestic environments. The EDID includes manufacturer name and serial number, product type, phosphor or filter type, timings supported by the display, display size, luminance data and (for digital displays only) pixel mapping data.
Jacks marked phono are for phonograph turntables only, and are not compatible with anything else.
That there are two different PoE power-transmission schemes isna€™t obvious to the casual user because PoE Powered Devices (PDs) are made to accept power in either format. Further distances can still be achieved by simply adding secondary LAN switches (330ft per switch).
Instead, you want to increase the ampa€™s initial gain to achieve the desired amount of overdrive. Manufacturers of cleaning devices sometimes misstate claims and rarely detail exactly how their products should be used or how they can be misused. Even after drying is apparently complete, these contaminants remain bonded to the end face surface and in a€?blinda€? areas such as the sides of ferrules, and within the bounds of generally accepted imperfections in the polished surface. Fixing plosives with audio editing software often creates more of a problem than the plosive itself. This reciprocity is similar to the manner in which a loudspeaker can also function as a microphone when attached to an audio input. It is possible that a new-generation HDBaseT chipset will be required to support HDMI 2.0 capabilities. Improper Dry Cleaning can require corrective end face polishing and even jumper replacement. Read Atlas' guide to Protecting Compression Drivers for more ideas on how to save yourself time and money in the long run by protecting the driver(s) when it is installed. The mixer, which drives the power amplifier, also receives its ground from the AC power cord. Use of a pop filter will also protect your microphone's sensitive capsule - keeping it free from moisture caused by saliva projecting from the performer's mouth, and breath condensation. For now, many manufacturers are introducing HDBaseT products that can support 4K video within HDMI 1.4.
For example, when using a Dry Cleaning technique, the recommended a€?twist and turna€? scrubbing motion applied to the dusty end face can result in scratches that can induce signal loss or signal deterioration. When the audio cable connects the mixer to the power amplifier the amplifier now sees a second ground from the mixer. So you get a more solid image of your sound in between the speakers where the sound is and the speakers are not.
The a€?figure-8 motiona€?, used for end face polishing, should never be used for end face cleaning.
Good microphone technique, proper positioning, and use of a pop filter can make all the difference between a so-so vocal recording and a great one. On most Crown amplifiers there is a "ground lift " switch on the back of the amplifier that performs this function and can be used to eliminate hum caused by ground loops. For Constant Voltage systems such as a 70.7V or 140V systems, the voltage is high and the current is low. The figure-8 motion is a polishing procedure, which is not intended for use in routine cleaning. If you are using a cable service, such as cable TV, and you are routing the audio through your stereo system, you may experience a ground loop hum. This is a result of the cable company's ground reference setting different than your system ground reference.
You can contact your cable company and get an isolation transformer that will take care of the problem.



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Author: admin | 29.08.2013 | Category: Small Storage Buildings


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