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All Power Posts

  • Tuesday, August 02, 2016
    impedance
    Jonah Altrove 08/02/16 01:32 PM,
    It may not seem so at first blush, but there are a few concepts as pervasive in live audio as the concept of impedance. It’s relevant to microphones, direct boxes (DIs), preamps, processors, amplifiers, loudspeakers, equalizers, crossover filters, and even the cables that connect them all together. In this article, as well as in part 2 to follow soon, we’ll explore the principles of impedance, and examine how these concepts apply directly to our work in the field. Ohm Sweet… View this post
    Filed in: AVLive SoundFeatureBlogStudy HallAmplifierAVInterconnectMeasurementPowerSignal

  • Monday, August 01, 2016
    powersoft
    PSW Staff 08/01/16 02:05 PM,
    ATK Audiotek (Valencia, CA) deployed 104 Powersoft K10 power amplifiers to drive loudspeakers serving the recent Democratic National Convention at the Wells Fargo Center in Philadelphia. The systems served more than 180 speeches and 15 musical performances across the four-day duration of the event. ATK Audiotek, which also served the Republican National Convention in Cleveland the week prior, was charged with delivering reliable audio with high speech intelligibility for both events. This effort was led by ATK head system tech… View this post
    Filed in: AVLive SoundNewsAmplifierAVConcertPowerSoftwareSound Reinforcement

  • Tuesday, July 26, 2016
    image
    PSW Staff 07/26/16 10:20 AM,
    LynTec announces the addition of Telnet control to the company’s complete line of RPC series power control panels. Telnet expands RPC’s interface options, strengthening the lineup’s onboard monitoring and control capabilities from any remote location. “Installations are moving toward a shared Ethernet backbone, and we added Telnet to the TCP/IP protocol to meet the need for simple monitoring and control over the network,” says Mark Bishop, president of LynTec. “As a manufacturer, we have the most choices for control of… View this post
    Filed in: AVNewsProductAVInstallationPowerSystem

  • Friday, July 22, 2016
    image
    Pat Brown 07/22/16 02:24 PM,
      With the wealth of knowledge about power available here on ProSoundWeb it’s a good idea to constantly evaluate our knowledge of power, or actually, your knowledge about power. Rather than submit you to the typical “right or wrong” questions with exact numerical answers, I’ve elected to provide a different means of self-evaluation. The test is “open book”, based upon the information shared in the article series and other resources, and I can tell you up front that the answer… View this post
    Filed in: AVFeatureStudy HallProductionAudioAmplifierAVInstallationInterconnectPowerSound ReinforcementSystem

  • Wednesday, July 13, 2016
    image
    Mike Sokol 07/13/16 06:09 AM,
    Provided by Live Sound Advice.   DI boxes (“Direct Instrument” or “Direct Inject” boxes) are very helpful tools in a live sound system. The most common type is called a passive DI, which includes an isolation transformer and ground lift switch.  The primary function of a DI box is to convert the unbalanced (1/4-inch 2-conductor) phone plug output on your keyboard or guitar into a low-impedance (low-z), balanced (3-conductor) XLR jack, which can be plugged directly into your signal snake… View this post
    Filed in: Church SoundFeatureBlogEducationInterconnectMonitoringPowerSignalSound ReinforcementStage

  • Thursday, June 30, 2016
    image
    PSW Staff 06/30/16 05:00 AM,
    The public auction begins today (June 30th) for the assets of the former Burst Sound & Lighting Systems, ending on Wednesday, July 6th. Burst Sound & Lighting was a full service sound and lighting systems company specializing in the rental, design, and installation of professional production systems. This unreserved auction sale includes mixing consoles, professional lighting and effects, loudspeakers, amplifiers, subwoofers, processors, equalizers, turn tables and microphones. It includes equipment from such manufacturers as Avid Technology, Midas, Adamson, EAW, Mackie,… View this post
    Filed in: AVNewsProductionCases & AccessoriesCurtains, Pipe & DrapeLightingAmplifierAVBusinessConsolesDigitalLine ArrayLoudspeakerMicrophoneMixerMonitoringPowerProcessorSound ReinforcementStageSubwooferSystemWireless

  • Monday, June 27, 2016
    image
    Craig Leerman 06/27/16 06:11 AM,
    Festival season, in particular, means dealing with portable generators for show power. At performance venues, we hardly give power a second thought, simply handing our tails or feeder to the house electrician to tie into the “company switch.” Then we check the voltages at the distro end with a meter to make sure everything is connected properly, and that’s usually it – no more thinking about the power until it’s time to disconnect at the end of the gig. The… View this post
    Filed in: ProductionFeatureProductStudy HallProductionAudioPowerSound Reinforcement

  • Tuesday, June 21, 2016
    dennis bohn
    Dennis A. Bohn 06/21/16 11:20 AM,
    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 post
    Filed in: AVFeatureBlogStudy HallAmplifierAVInterconnectMeasurementPowerSignalSound Reinforcement

  • phantom power
    Bruce Bartlett 06/21/16 06:22 AM,
    This article is provided by Bartlett Audio.   Unsure about phantom power? Let’s clear up the mystery. Nearly all mixing consoles and audio interfaces provide phantom power at their microphone input connectors. Most condenser mics need phantom power to operate, so you simply plug the mic into the mixer to power it. But the ways we use and connect phantom power can make a big difference in how well those mics work. So what, exactly is phantom power, and how… View this post
    Filed in: Live SoundFeatureBlogStudy HallConsolesInterconnectMicrophoneMixerPowerSignal

  • Friday, June 17, 2016
    amplifiers
    Pat Brown 06/17/16 06:26 AM,
      How much power can an audio amplifier produce? As you might expect, “it depends.” I will approach this from two angles—in theory and in practice. This article will deal with the theory. Part 3 will show how things play out in the real world. Importance Of Efficiency Amplifiers don’t make power. They convert it. Any audio power that comes from your amplifier must in turn come from the utility outlet that it is connected to. This is why the… View this post
    Filed in: AVFeatureBlogStudy HallAmplifierAVMeasurementPowerSound Reinforcement



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