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A/V features

  • Friday, January 17, 2014
    PSW Staff 01/17 03:51 PM,
    Provided by Sweetwater.   Q: I recently saw a Tech Tip here on ProSoundWeb about choosing the correct gauge of wire for loudspeakers, which really got me thinking. I’m just starting out in the A/V field and I really want to make sure I’m equipping myself with the best set of knowledge from the get-go. So my question may be simple (and a little open-ended); however, I could really use an explanation: What is impedance balancing? A: First of all,… View this story
    Filed in: AVFeatureBlogStudy HallAVEducationInstallationSignalSound ReinforcementSystem

  • Thursday, January 16, 2014
    meyer sound
    Pete Soper & Steve Bush 01/16 06:55 PM,
    Linearity is reasonably straightforward as a concept, but when applied to sound reinforcement systems – and to large-scale systems in particular – it gets a bit more complicated. Understanding linearity can be extremely helpful when designing, tuning and operating systems for predictable and repeatable results. It’s a concept that is often either taken for granted, misunderstood or not fully grasped because there are many parameters to consider when evaluating audio systems. We’ll establish some fundamentals before tackling more complex issues.… View this story
    Filed in: AVFeatureBlogStudy HallAmplifierAVLoudspeakerMeasurementProcessorSound ReinforcementSystem

  • Friday, January 10, 2014
    Chuck Wilson 01/10 03:46 PM,
    This article is provided by Commercial Integrator   Variables aren’t variables if you count on them, so let’s lay out market factors to consider in strategic planning. Here are nine things that systems integrators can be absolutely certain about in 2014. 1. Technology will continue to advance rapidly, making it more difficult to keep up with change. Integrators will need to be far more “engaged and informed,” and become experts at anticipating the next generation of product offerings they need… View this story
    Filed in: AVFeatureBlogAVBusinessInstallationNetworkingSoftwareTechnician

  • Tuesday, January 07, 2014
    danley sound
    PSW Staff 01/07 02:49 PM,
    Nicknamed “Death Valley,” Tiger Stadium on the campus of Louisiana State University (LSU) in Baton Rouge is renowned for the deafening roar produced by 92,500-plus fans on Saturdays in support of the school’s powerhouse football team. The noise is notorious for scrambling the communications and sapping the confidence of Tigers opponents, and indeed, the NCAA ranked Tiger Stadium as the loudest stadium in college football, noting as an example that fans’ euphoric response to a last-minute LSU touchdown in 1988… View this story
    Filed in: AVFeatureBlogAVInstallationLoudspeakerSound Reinforcement

  • wavelengths
    Ken DeLoria 01/07 11:37 AM,
    Most sound practitioners know that low-frequency wavelengths are much longer than high-frequency wavelengths. But because we can’t see them, to what level do we really understand them? This is an important subject because understanding the nature of wavelengths can aid in optimally setting up and operating the various types of sound systems that most of us come in contact with. Let’s look at the physical differential between low frequencies and high frequencies. They are quite radical, in the sense that… View this story
    Filed in: AVFeatureBlogStudy HallAVLoudspeakerProcessorSignalSound ReinforcementSubwoofer

  • Friday, January 03, 2014
    Chris Bushick 01/03 02:45 PM,
    As with many types of cable, you can save some money by purchasing Ethernet cable and connectors and assembling/terminating them yourself. Of course, keep in mind that putting together cables of any type requires time, patience and some know-how. Without these essential ingredients, you’ll be much better served by buying pre-terminated cables. That said, let’s get started. First, to attach any Ethernet RJ-45 connector ends to the lengths of cable, you’ll need an RJ-45 crimping tool. Start with a good… View this story
    Filed in: AVFeatureBlogStudy HallAVEthernetInterconnectNetworking

  • Tuesday, December 31, 2013
    PSW Staff 12/31 06:08 PM,
    Be sure to cast your votes in the 2014 PSW Readers Choice Awards.   As we turn the page on 2013, we present the 20 articles that were the most-read over this past year on ProSoundWeb, based upon total page views. Note that some of the articles that delivered top results over the past 12 months were actually written and posted well over a year ago, but they continue to prove of high interest and value to our worldwide readership.… View this story
    Filed in: AVLive SoundRecordingChurch SoundFeatureBlogOpinionAVEducationSound ReinforcementStudio

  • Monday, December 23, 2013
    digital audio
    John Murray 12/23 12:54 AM,
    More and more these days, audio systems are going digital, not just digital signal processing (DSP), but also for general signal transmission between devices as well. Let’s take a look at the care and feeding of Ethernet cabling, specifically the multiple twisted pair stuff we call CAT-5 and CAT-6. General signal cabling has been organized into categories which we refer to as CAT-X cables. All are available using either solid or stranded conductors. Their designations, according to ElA/TIA-568-B standards are… View this story
    Filed in: AVFeatureBlogStudy HallAVEthernetInstallationInterconnectNetworking

  • Friday, December 20, 2013
    fir filters
    Pat Brown 12/20 06:23 PM,
      In part 1 of this article series (here), I laid out a few guiding principles regarding Finite Impulse Response (FIR) filters. Here’s a quick review: 1) With FIR filters I can have very steep LP and HP filters, such as might be used in a crossover network, that have linear group delay (same delay for all frequencies). 2) The magnitude and phase response of a FIR filter can be adjusted independently. In an Infinite Impulse Response (IIR) filter they… View this story
    Filed in: AVFeatureBlogStudy HallAVLine ArrayLoudspeakerMeasurementProcessorSignalSound Reinforcement

  • Wednesday, December 18, 2013
    phase polarity
    Chuck McGregor 12/18 03:35 PM,
    Polarity and Phase - these terms are often used as if they mean the same thing. They are not. POLARITY: In electricity this is a simple reversal of the plus and minus voltage. It doesn’t matter whether it is DC or AC voltage. For DC, Turn a battery around in a flashlight and you have inverted or, more commonly stated, reversed the polarity of the voltage going to the light bulb. For AC, interchange the two wires at the input… View this story
    Filed in: AVFeatureBlogStudy HallAVEducationInstallationMeasurementProcessorSignalTechnician

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