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A/V features

  • Tuesday, January 07, 2014
    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
    ethernet
    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
    prosoundweb
    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 are… 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

  • Friday, December 13, 2013
    image
    PSW Staff 12/13 12:42 PM,
    The fifth annual Readers Choice Awards—where you can vote on your favorite sound reinforcement products—has just launched on ProSoundWeb. (Go here to vote.) Readers Choice is unique for a number of reasons, chief among them (and as the name says), all voting is the exclusive domain of the readers of PSW. The first four editions of RCA racked up more than 100,000 total votes. The races in most categories are close and competitive, owing to the overall strength of every… View this story
    Filed in: AVLive SoundChurch SoundFeatureNewsProductAnalogAVBusinessDigitalSound Reinforcement

  • Wednesday, December 11, 2013
    cable
    PSW Staff 12/11 09:38 AM,
    Provided by Sweetwater.   Q: Despite my experience within the A/V industry (I wont say how long it’s been), I’ve never quite gotten the hang of everything. Admittedly, this is because I’m a bit more of a video expert, but I’d like to remedy that. So I wanted to get clarification on a few things. The largest (and perhaps most important) being, how do I choose the correct gauge of wire for loudspeakers? A: Selection of the appropriate wire gauge… View this story
    Filed in: AVFeatureBlogStudy HallAVInstallationInterconnectSignalSystemTechnician

  • Thursday, December 05, 2013
    contracting
    Bruce Main 12/05 03:23 PM,
    We’re currently in-between touring seasons. Cables and snakes have been tested and repaired, wood painted, and cases treated to fresh new stenciling. All racks have been repackaged to their standard configurations, trucks subjected to annual maintenance, and warehouse floor swept - twice. Aside from a stray show here and there, for many hire companies, things are pretty quiet. Yes, these are the days that turn sound company owner and manager thoughts to Alternative Revenue Sources (ARS). The contracting/install market is… View this story
    Filed in: AVFeatureStudy HallAVBusinessInstallationInterconnectMixerSignalSound ReinforcementSystem

  • prosoundweb
    PSW Staff 12/05 10:11 AM,
    More than 650 worship production personnel and live sound operators converged on the Dallas Convention Center in October to check out the third annual Live Sound Compact Systems Demo, held in conjunction with the WFX Conference & Expo. The demo provides the opportunity to directly listen to, evaluate, and compare more than a dozen compact loudspeaker systems in a controlled listening environment. In addition, all participating companies have representatives on hand to provide technical details and pricing information. The event… View this story
    Filed in: AVLive SoundChurch SoundFeatureNewsTrainingAVBusinessLine ArrayLoudspeakerSound ReinforcementSystem





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