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Articles Tagged Loudspeaker World

  • Tuesday, January 12, 2016
    loudspeakers
    PSW Staff 01/12/16 12:01 PM,
    Excerpted from JBL Professional Technical Note Volume 1, Number 14: “Basic Principles for Suspending Loudspeaker Systems.” Design Factor Design factor is a term used by the rigging industry to denote theoretical reserve capability. The rated capacity / of all lifting and hanging equipment b based upon the nominal strength of the equipment reduced by the design factor. Design factor is a number representing the fraction of equipment nominal strength chosen to be appropriate for the particular application. Rated Capacity =… View this story
    Filed in: ProductionChurch SoundFeatureSlideshowStudy HallProductionAudioRiggingStagingEducationLine ArrayLoudspeakerStageSystem

  • Wednesday, January 06, 2016
    phase alignment
    Bob McCarthy 01/06/16 06:11 AM,
    The setting of delay times in signal processors is one of the principal techniques of system optimization. In most cases the timing is set to “align” two (or more) signal sources so as to create the most transparent transition between them. The process of selecting that time value can be driven by time or phase, hence the relevant terms are “time alignment” and phase alignment.”  These are related but different concepts and have specific applications. It’s important to know which… View this story
    Filed in: Live SoundFeatureBlogStudy HallLine ArrayLoudspeakerMeasurementProcessorSignalSound ReinforcementSubwoofer

  • Wednesday, December 30, 2015
    image
    Craig Leerman 12/30/15 07:38 AM,
    The Old Soundman once said to me, “A speaker ain’t a speaker unless it’s got some speakers inside.” Indeed, true words of wisdom. Cone and compression driver technology has improved considerably over the years, mirroring the progress of the loudspeaker systems that utilize them. The result is sonic quality that’s vastly upgraded, along with enhanced durability. Advanced design techniques and the employment of materials such as neodymium in magnet structures have helped lead this charge. Today’s drivers are marked by… View this story
    Filed in: AVFeatureSlideshowAVLoudspeakerManufacturerSound Reinforcement

  • Thursday, December 03, 2015
    meyer sound
    PSW Staff 12/03/15 01:43 PM,
    Large-format line arrays (which we loosely identify as models with 12-inch and larger woofers) are ideal for large-scale concert and event applications, both indoors and outdoors. They really deliver in terms of output, and in many cases, are now much more than simply loudspeakers, better described as fully integrated systems. The vast majority of the models we’re presenting here incorporate dedicated power and DSP packages (onboard or rack mounted), as well as being outfitted with increasingly sophisticated control, networking, and… View this story
    Filed in: Live SoundFeatureProductSlideshowAmplifierLine ArrayLoudspeakerProcessorSound Reinforcement

  • Wednesday, November 25, 2015
    monitors
    PSW Staff 11/25/15 11:55 AM,
    Welcome to our quiz featuring 20 questions about stage monitoring and related issues. This is somewhat subjective and largely intended for entertainment purposes—better known as FUN for short—although there is fact and/or truth in many of the “correct” responses. Time for the obligatory non-apology: “We apologize if this quiz offends anyone. That is… er, is not... our intention. Besides, if you don’t like it, we’ll just claim you took it out of context.” Enjoy! 1) Why do vocal acts prefer… View this story
    Filed in: Live SoundFeatureStudy HallConcertLoudspeakerMixerMonitoringSignalSound ReinforcementStage

  • Tuesday, November 24, 2015
    rational acoustics
    Jamie Anderson 11/24/15 01:06 PM,
    Feed The Brain. The primary job of a measurement rig is to acquire electrical and acoustical signals and feed them to the processor so that it can analyze, compare, slice, dice, fold, spindle and mutilate those signals and produce multi-colored charts, graphs and the all-important squiggly lines. “But my software can produce squiggly lines all by itself without all those bothersome wires, preamps and microphones. Isn’t that enough?” Maybe. It depends on whether you are getting paid to pose or… View this story
    Filed in: AVFeatureStudy HallAVDigitalMeasurementMicrophoneProcessorSignalSoftwareSound ReinforcementSystem

  • Friday, November 20, 2015
    time
    Tom Young 11/20/15 03:56 PM,
    When traveling to different time zones, we need to correct our time-keeping tools in order to align our activities to the local standard time. Very simple. Likewise in sound reinforcement systems, we often encounter multiple sources of misalignment, albeit in much smaller time increments. The importance of these misalignments is often subject to debate, but with the advent of a wide variety of very good digital processing products, correcting such anomalies is no longer out of reach for most of… View this story
    Filed in: Live SoundFeatureBlogStudy HallLoudspeakerMeasurementProcessorSignalSound ReinforcementSubwoofer

  • Monday, November 16, 2015
    subwoofers
    Jerrold Stevens 11/16/15 07:10 AM,
    PSW Top 20 presented by Renkus-Heinz   “Subwoofers should be located on the floor if at all possible.” This is one of those classic bits of audio “conventional wisdom.” I hear it from system operators on nearly every project. But is it true? If we look at the physics of sound, we learn that, as with most things in the world of audio, “it depends.” So let’s start by discussing why the floor might indeed be a good place to… View this story
    Filed in: AVFeatureBlogProductStudy HallAVConcertInstallationLoudspeakerMeasurementSound ReinforcementSubwoofer

  • Thursday, November 12, 2015
    image
    Craig Leerman & Keith Clark 11/12/15 12:29 PM,
    In the world of sound there’s an old adage that states, “Your system is only as good as the weakest component in the signal chain.” This is especially true of a system’s loudspeakers. They are the last link in the chain and are directly responsible for communicating everything that’s been done to the signal along the way. Going beyond simply delivering sound into a room, they actually become a living physical element, dynamically interacting with their surroundings. In other words,… View this story
    Filed in: Church SoundFeatureBlogStudy HallLine ArrayLoudspeakerMeasurementSignalSound ReinforcementSubwoofer

  • Friday, November 06, 2015
    reverb
    Pat Brown 11/06/15 07:11 AM,
      The reverberation time (RT) is one of the most fundamental room measurements. It gives a broad brush stroke description of the general acoustical behavior of an acoustically “live” space, paving the way for the use of other metrics to determine clarity and direct-to-reverberant ratios. Wallace Clement Sabine was the first to formalize the RT into an acoustic metric. His method of measurement involved a program source, a stopwatch and a quiet room. Sabine determined that 60 dB of room… View this story
    Filed in: AVFeatureStudy HallAVLoudspeakerMeasurementProcessorSignalSound Reinforcement



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