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A/V features

  • Thursday, April 17, 2014
    dennis bohn
    Dennis A. Bohn 04/17 12:17 PM,
    This article is provided by Rane Corporation.   This paper discusses the pitfalls (often subtle) of our industry’s failure to define and standardize what “unity gain” means, and the conditions necessary to measure it. It further discusses how people improperly use one piece of misinformation (impedance matching) to correct for this lack of standardization. All done, without knowing discrepancies exist between different pieces of equipment, and without knowing impedance matching is unnecessary, signal degrading, and wasteful. For me, it began… View this story
    Filed in: AVFeatureBlogStudy HallAmplifierAVInterconnectMeasurementPowerSignalSound Reinforcement

  • Wednesday, April 16, 2014
    tech tip
    PSW Staff 04/16 03:36 PM,
    Provided by Sweetwater.   Q: I want to start repairing and making some of my own cables. However, I came upon a term I’m sure is such common knowledge that my question really shows my ignorance. That said, here goes: what is “tinning”? I know it’s part of the soldering process, but can you explain why it’s important, etc? A: Thanks for the question! While it’s indeed common knowledge, there’s no reason for you to know what tinning is unless… View this story
    Filed in: AVFeatureBlogStudy HallAVInterconnectSignal

  • Monday, April 14, 2014
    loudspeakers
    PSW Staff 04/14 11:04 AM,
    Despite their rather scant appearance, many modern column loudspeakers deliver exceptional full-range performance, and this can be furthered by companion LF boxes and subwoofers. Although they’ve been around for more than a half-century, column loudspeakers are popular because they offer a compromise solution for those who need efficiency in the vocal range combined with even coverage and a very slim, unobtrusive profile. A look into line source coupling behavior and pattern control tells us that loudspeaker cones exhibit coupling behavior… View this story
    Filed in: AVFeatureBlogSlideshowAVDigitalInstallationLine ArrayLoudspeakerSoftwareSound ReinforcementSubwoofer

  • image
    Joan La Roda 04/14 09:14 AM,
    FFT-based field measurement systems have made it possible for us to do phase alignment at fixed installations as well as at live events, where every venue demands a different approach. This is particularly important since mid-high boxes are often flown and subwoofers remain on the ground, meaning that phase differences at the listener location can be very significant. Given the interest in the subject, and the remarkable improvement it can bring to a system, it seems like a good idea… View this story
    Filed in: AVFeatureBlogStudy HallAVLine ArrayLoudspeakerMeasurementProcessorSignalSound ReinforcementSubwoofer

  • Thursday, April 10, 2014
    image
    Sam Berkow 04/10 02:31 PM,
    If one could listen to only the direct sound of a loudspeaker, the world would be a very different place! Unfortunately, free field listening, where you have no reflections, room modes or ambient noise, is hard to achieve in everyday life, so we listen to loudspeakers in real rooms. The interaction of a loudspeaker system and a room can be very complex to understand, model or measure! One way to measure this interaction is to measure the impulse response of… View this story
    Filed in: AVFeatureBlogStudy HallAVLoudspeakerMeasurementSignalSound Reinforcement

  • Wednesday, April 09, 2014
    line arrays
    Jeff Berryman 04/09 01:57 PM,
    This is a discussion of line array high-frequency output capability, and what it might mean to you. The specific quantity we’re looking at is the frequency response at maximum output power for all drivers. This is the maximum acoustic output of the array as a function of frequency. I will call it the power-bandwidth response. Here’s a question: what power bandwidth must line array elements have in order to deliver a flat frequency response to audience seats? Because of the… View this story
    Filed in: AVFeatureBlogStudy HallAVLine ArrayLoudspeakerMeasurementSignalSound Reinforcement

  • Monday, April 07, 2014
    equalizers
    Dennis A. Bohn 04/07 08:17 AM,
    This article is provided by Rane Corporation.   You may have heard it said that equalizers are nothing more than glorified tone controls. That’s pretty accurate and helps explain their usefulness and importance. Simply put, equalizers allow you to change the tonal balance of whatever you are controlling. You can increase (boost) or decrease (cut) on a band-by-band basis just the desired frequencies. Equalizers come in all different sizes and shapes, varying greatly in design and complexity. Select from a… View this story
    Filed in: AVFeatureBlogStudy HallAVMeasurementProcessorSound Reinforcement

  • Wednesday, April 02, 2014
    integration
    Jeffrey L. Miranda 04/02 12:01 PM,
    This article is provided by Commercial Integrator   Let’s face it: true commercial systems integrators’ reputations have taken a hit by clients’ bad experiences with not-so-true integrators. Having supported customers for a manufacturer, I can attest that there are many customers left unsure of who to trust. Tired and frustrated, they don’t want to trust any integrators. There needs to be a vast change in the way integrators handle customers. How we offer to help them, I believe, provides us… View this story
    Filed in: AVFeatureBlogStudy HallAVBusinessInstallationSound ReinforcementSystemTechnician

  • Tuesday, April 01, 2014
    prosoundweb
    Pat Brown 04/01 01:23 PM,
    For the majority of humans, there is nothing simpler than listening to sound. You simply, well, listen. When it becomes necessary to describe the listening experience analytically, however, a host of complex equations and diagrams are required to describe even the simplest of sonic events. The benefit of mathematical analysis is that it can yield insights that are not apparent through intuition alone. Acoustic signals are easily measured, and the audio components that produce them have characteristics that can be… View this story
    Filed in: AVFeatureBlogStudy HallAVEducationEngineerSound ReinforcementTechnician

  • sensaphonics
    PSW Staff 04/01 12:17 PM,
    Sensaphonics has announced its expansion into the field of custom eye protection with the introduction of the 3D 20/20, the world’s first Active Ambient Optical Protection System. The system is designed to control the harmful rays from concert lighting systems, eliminating the strobing and glare that can cause headaches or even seizures among musicians and audience members alike. “The 3D-20/20 is, quite simply, a game-changing product,” explains Sensaphonics founder and president, Dr. Michael Santucci. “We’ve all been to concerts where… View this story
    Filed in: AVLive SoundFeatureNewsProductAVSound ReinforcementStage