News

Listen Technologies has a limited lifetime warranty program for its FM assistive listening products that guarantees each Listen product for the product's

You have just completed installing a security system for one of your more publicly visible customers. You want to ensure that, in the future, he is happy

Ancient Polynesians believed Pele to be their fire goddess, the one responsible for the raging fires deep within the Pacific's volcanoes. According to

You are probably familiar with Ripley and his collection of "Believe It Or Not" stories. Although I do not claim to have superseded his notoriety, I do

As A-V designers and installers, many of you are already aware that your commitment to your client does not end immediately after the freshly installed

Diet, nutrition, exercise and physical fitness have been with us long enough now that it's safe to say that such concerns are not just a passing trend.

As everyday participants in the design, selection, purchase and installation of wire and cable for low-voltage usage, we need to be cognizant of the technological

The general public's growing acceptance of new, larger and more affordable conventional video display technology creates an exciting sales opportunity

The impact of flat-matrix imaging cannot be underestimated. One major manufacturer is discontinuing the sale of 40 inch (1 m) and larger rear-projection

Aptly illustrating the incorporation of A-V technology into education is Chapman University's Beckman Hall, Orange, CA. This ongoing project currently

The fiber optic transmission system described in this article uses intensity modulation (or AM) of the light source by the video signal; a linear LED

Every night, I read a book to my youngest, Eric. His favorite book is about the wolf and the three little pigs. He is fascinated by the fact that...

According to the 1998 Sound & Video Contractor Reader Profile, 53% of you design and install for corporate A-V applications, 48% in CCTV, 35% for display

Video and coaxial cable. The two seem to go together like soup and sandwich. In fact, we have been using coaxial cable with video signals for so long

Since the invention of television, virtually all closed-circuit video transmission has been through coaxial cable. This method works well, but there are

As digital display technology develops and advances, new market applications emerge. To date, most of these applications have fallen in the realm of business

Over the past few years, education has grown from a once small market into the primary source of business for many dealers, consultants and system integrators.

Times are good; your business is booming. Your favorite projector manufacturer has just shipped the latest, greatest machine and, sure enough, it is lighter

Whenever professional A-V dealers get together these days, the subject inevitably gets around to competition from resellers of PCs and their ability to

Let me debunk a common myth. Impedance matching is a concept that does not apply to mics and preamps. Because the electrical noise floor, heard as hiss,

Alnico magnets: The Alnico magnet is composed of aluminum, nickel and cobalt, and consequently, it is relatively strong and stable. Alnico is beneficial

Whenever I think about a historical event or remember something memorable, I usually associate it with a one-liner. One of my favorites is from a recent

The first recorded use of the term microphone was in 1827 when Sir Charles Wheatstone described a mechanical vibrating stethoscope. It would be 50 years

Transducers are not magical or mystical, though one might think so after being exposed to sufficient loudspeaker marketing. The depth of understanding

Historically, the pro sound industry has gone to larger diameter voice coils and more massive magnet structures to increase loudspeaker output capability

Higher SPL levels are certainly desirable in today's pro audio systems, but improved quality and low distortion are also important. The Community M4 compression

Bringing the classroom to the student saves institutions money by cutting travel costs, saving time, and reducing spending on duplicated resources. Studies

Until five years ago, the largest cruise ship afloat was only 75,000 gross tons. Currently, there are ships afloat that are more than 100,000 gross tons,

The acoustically ideal transducer is sometimes described as a mass-less point source with a three decade bandwidth. Despite many attempts to approximate

There is a Monty Python sketch whose hero, Dennis Moore, robs from the rich to give to the poor. Dennis is so proficient that, after a while, the poor

Loudspeaker directivity is expressed in many different ways on spec sheets and marketing materials provided by loudspeaker manufacturers. Until there

A mic is a transducer, a device that changes one form of energy into another. Specifically, a mic changes sound into an electrical signal. A mic can be

After many years of being too busy, I decided it was time to get an annual medical physical examination. Nothing was bothering me, but in the interest

What is technical training, and why would anybody want it? Those are subtle questions. We all learn on the job. I sure did. Most of us had the great...

The new version 3.0 of EASE will include all of the functions of its DOS predecessor, but the number of new features far outweigh even this venerable