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Articles Tagged Power

  • Wednesday, April 02, 2014
    tech topic
    John Murray 04/02/14 03:51 PM,
    Years ago, only car stereo makers would advertise “2,000 Watts Of Earth-Shaking Power!” But with the recent shift to switching power supply amplifier topology, we’re now seeing this with many pro-oriented products. What’s behind the hype? And what about properly matching power amplifiers and loudspeakers? Answers start by focusing on the fundamental unit of measure in audio, the watt. What is a watt? A strict definition according to Wikipedia: One watt is the rate at which work is done when… View this story
    Filed in: Live SoundFeatureBlogStudy HallAmplifierLoudspeakerMeasurementPowerSignal

  • Friday, March 07, 2014
    jbl
    PSW Staff 03/07/14 10:46 AM,
    Provided by Sweetwater.   Q: I help out with the audio at my church, and when our choir director asked me to add a loudspeaker for the choir loft, I thought it sounded a little challenging but not overly difficult. Well, when I connected the wire to one of the loudspeakers in the hallway, the entire system went dead! The plate on the back of the loudspeaker said something about 70.7 volts. What’s going on, and what the heck is… View this story
    Filed in: Church SoundFeatureBlogStudy HallAmplifierInstallationInterconnectLoudspeakerMeasurementSignalSystem

  • Saturday, March 01, 2014
    phantom power
    Bruce Bartlett 03/01/14 01:20 PM,
    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 do we apply it effectively? Understanding It Phantom… View this story
    Filed in: Live SoundFeatureBlogStudy HallConsolesInterconnectMicrophoneMixerPowerSignal

  • Wednesday, February 26, 2014
    d&b audiotechnik
    PSW Staff 02/26/14 09:20 AM,
    The new d&b audiotechnik D80 is a 4-channel amplifier offering sophisticated control capabilities and the power to efficiently drive d&b loudspeakers, along with comprehensive management and protection functionalities dedicated to mobile or installation applications. The high-power-density, 2 RU D80 incorporates digital signal processing to provide configurations for the entire d&b loudspeaker range. Each of the four channels integrated into the D80 feature a signal delay of up to 10 seconds and two 16-band equalizers, providing parametric, notch, shelving and asymmetric… View this story
    Filed in: AVLive SoundNewsProductAmplifierAVDigitalProcessorSoftwareSound Reinforcement

  • Monday, February 24, 2014
    sweetwater
    PSW Staff 02/24/14 07:03 AM,
    Provided by Sweetwater.   Q: I’ve been getting quite a few questions from clients lately about UPS (uninterruptible power supply) systems.The problem is, most either want to run out to their local office supply store and buy what’s cheapest, which I’ve insisted probably isn’t the best idea, or they’re an audiophile who’s heard that on-line UPS systems are the way to go. What can I tell people who don’t understand the value of the (many) other types of UPS systems,… View this story
    Filed in: AVRecordingFeatureBlogStudy HallAVInstallationInterconnectPowerSignalSystem

  • Wednesday, February 05, 2014
    no shock zone
    Mike Sokol 02/05/14 03:12 PM,
    Provided by the No Shock Zone.   In part 1, we covered what voltage is and a bit on how it’s measured. Here let’s look at how to use a basic digital voltmeter to measure any power outlet or extension cord for proper voltage. The reason this procedure is so important is that sometimes venues do crazy things with power outlets. For instance. I was teaching a seminar last year in a “gymnatorium” and plugged in my little demo rack… View this story
    Filed in: Church SoundFeatureBlogStudy HallEducationEngineerMeasurementPowerSignalSystemTechnician

  • Friday, January 17, 2014
    sweetwater
    PSW Staff 01/17/14 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

  • Wednesday, January 08, 2014
    tech tip
    PSW Staff 01/08/14 02:11 PM,
    Provided by Sweetwater.   Q: I just got Pro Tools for Christmas and I’m working on setting up a home studio. I’m trying to make sure I have all the power and stuff hooked up correctly. Can I run both a UPS (uninterruptible power supply) and an AC power conditioner/surge suppressor, or should I only use one? A: The answer to this one is a bit surprising. If you’re using a UPS to power equipment in your studio, you may… View this story
    Filed in: RecordingFeatureBlogStudy HallDigital Audio WorkstationsEducationPowerSignalStudioSystem

  • Monday, December 23, 2013
    juice goose
    PSW Staff 12/23/13 01:18 PM,
    Juice Goose is now shipping the CQ 1 (“Qiwi”), a new concept in AC power sequencing that fits in a 2-gang wall enclosure and functions without a master control device, meeting a need for distributed, non-racked power control presented by the proliferation of powered loudspeakers. Qiwi operates just like the other Juice Goose CQ Series models with plug-and-play networking simplicity. It’s 15-amp duplex turns on with a single sequence event. Like other CQ models, the Qiwi has a sequence signal… View this story
    Filed in: AVLive SoundChurch SoundNewsProductAVInstallationInterconnectPowerSignal

  • Thursday, December 19, 2013
    wireless systems
    Mike Wireless 12/19/13 07:05 PM,
    One of the topics that I’ve seen poorly understood, and even deliberately used to mislead people, is the issue of wireless microphone transmitter power and the effects said power has on system performance. Let’s start with the basics: all things being equal, more transmitter power = more range for the system, but not in a linear way. In broad terms, when discussing analog wireless systems, the receiver wants to see a signal from a transmitter (carrier) that is at least… View this story
    Filed in: AVLive SoundFeatureBlogStudy HallAnalogMeasurementMicrophonePowerSignalWireless