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A/V features

  • Thursday, July 17, 2014
    churchill downs
    PSW Staff 07/17 07:57 AM,
    Churchill Downs in Louisville, site of the Kentucky Derby since 1875, received a significant sound reinforcement system upgrade in time for the 2014 season to accompany the addition of the largest 4k video board (171 by 90 feet) in the world. Marsh/PMK International of Richardson, TX, worked with Kentucky-based Encompass Develop, Design & Construct to successfully complete the challenging project. Unlike baseball and football stadiums, the grandstand at Churchill Downs has seating tiers that are stacked vertically, straight up and… View this story
    Filed in: AVFeatureBlogAVInstallationLoudspeakerSoftwareSound ReinforcementTechnician

  • Friday, July 11, 2014
    blue man group
    Marcus Ross 07/11 11:21 AM,
    At 9:30 pm on a Tuesday in December, I had five teams totaling more than 30 people poised to descend on the Blue Man Theater at the Monte Carlo in Las Vegas to implement a new house system. With less than 48 hours, including meal breaks, turnarounds and hopefully a nap or two, everything had to be ready for a show by Thursday at 7 pm. The organized chaos worked even better than imagined and the sonic improvement is nothing… View this story
    Filed in: AVFeatureBlogAVConsolesInstallationLine ArrayLoudspeakerMeasurementProcessorSound ReinforcementSubwoofer

  • Wednesday, July 09, 2014
    Bill Whitlock 07/09 02:45 PM,
    Electromagnetic interference, often referred to as EMI, is a degradation of the performance of a piece of equipment or system caused by electromagnetic radiation. Electromagnetic radiation is the travel of alternating electric and magnetic fields through space at 186,273 miles (about a billion feet) per second, or the speed of light. A wavelength, as shown in Figure 1 below, is the physical distance traveled by a wave during one cycle. When the equipment or system is closer than about a… View this story
    Filed in: AVFeatureStudy HallAVInterconnectPowerSignalWireless

  • Tuesday, July 01, 2014
    distributed systems
    Rick Kamlet 07/01 01:00 PM,
    Before beginning the design process for a business sound system, identify what the customer needs and expects: Fidelity Expectations. Does the client want a good, basic system; something a little better than average; or maximum bandwidth and maximum fidelity? Sound-Level Requirements. Will the system be used strictly for background music, or does it really need to rock? Usage. What kind of music will be played through it? For example, if it’s urban funk, then you’re going to have to think… View this story
    Filed in: AVFeatureBlogStudy HallAVInstallationLoudspeakerPowerSoftwareSound Reinforcement

  • Saturday, June 28, 2014
    PSW Staff 06/28 04:12 PM,
    Welcome to PSW’s coverage of the just-concluded InfoComm 2014 show in Las Vegas Convention Center, with InfoComm reporting more than 37,000 in attendance, a new record as well as a 5.5 percent increase compared to last year’s show in Orlando. “InfoComm is the ideal place to make AV purchasing decisions, connect with contacts and learn principles that will boost your effectiveness,” states David Labuskes, executive director and CEO of InfoComm International. “The marketplace strongly supports the InfoComm show, and we… View this story
    Filed in: AVFeatureNewsBlogProductTrainingAnalogAVBusinessDigitalManufacturerSound Reinforcement

  • Wednesday, June 25, 2014
    Daniel L. Newman 06/25 06:32 PM,
    This article is provided by Commercial Integrator   In the interest of full disclosure, I am not an A/V geek. I have only spent my entire career in or on the periphery of the A/V industry. I mean, A/V geeks push the cart around the school. They wear bifocals with tape around the nose and they are very susceptible to bullies’ wedgies. However, over the years I have gotten to know a lot about A/V. This tiny industry is chock… View this story
    Filed in: AVFeatureBlogStudy HallAnalogAVBusinessDigitalEngineerEthernetInterconnectNetworkingTechnician

  • amplifiers
    Pat Brown 06/25 01:07 PM,
      The crest factor of an audio signal is the dB difference between the peaks and the RMS value of the signal. The RMS (Root Mean Square) is defined as the “heating value” of the signal - the voltage that would generate the same heat as a DC (Direct Current) signal, over the same time. The RMS value of a complex signal must be read with an RMS voltmeter. Alternatively, the signal can be digitally sampled and the samples summed… View this story
    Filed in: AVFeatureBlogStudy HallAmplifierAVInterconnectLoudspeakerPowerSignalSystem

  • Tuesday, June 24, 2014
    db reference chart
    Pat Brown 06/24 06:32 AM,
      Increasingly, SynAudCon has been doing audio training for industries outside of mainstream audio. These include fire alarm, security and IT. Practitioners in these fields are being dragged “kicking and screaming” into the professional audio world. The concept most difficult for them to grasp is the decibel. Our task is to convey a working understanding of the dB in the shortest possible time span. In a one or two-day class, there is simply no time for an in-depth discussion of… View this story
    Filed in: AVFeatureBlogStudy HallAVMeasurementSignalSound ReinforcementSystem

  • Tuesday, June 17, 2014
    John Eargle & Chris Foreman 06/17 08:49 AM,
    Compression drivers and the horns that comprise the horn loudspeaker system have been a part of the audio industry from the very beginning of product development in sound reinforcement systems. As is true for cone loudspeakers, most of the early development in horn loudspeakers began when sound was first put to picture back in the 1930s when the first “talking films” were released.  Since that time, compression driver technology coupled with horn development advances have been in the areas of… View this story
    Filed in: AVFeatureStudy HallAVLoudspeakerSound Reinforcement

  • Monday, June 16, 2014
    Pat Brown 06/16 07:09 PM,
      An auditorium is a “place for hearing.” It’s very definition suggests that any aspect of the space that has to do with communication should be given high priority. Prior to the invention of the sound reinforcement system, an auditorium was a space designed to allow a large number of people to be addressed by an unreinforced talker. The room geometry and acoustical treatments in an auditorium provided natural reinforcement for the acoustic source. The ancient Greeks even built megaphones… View this story
    Filed in: AVFeatureBlogStudy HallAVLine ArrayLoudspeakerSound ReinforcementSubwoofer