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Articles Tagged Power

  • Friday, October 12, 2012
    Voltage Surges: The Real World Of Power Quality Problems
    audio system power
    Dennis Ver Mulm 10/12/12 05:44 PM,
    Most electronic equipment is designed to operate at voltage levels of 120 volts in North America or 230 volts in Europe. Occasionally some very current hungry equipment might be powered from 208 volts in North America. Regardless of the power line voltage, power supplies inside the electronic equipment convert this AC voltage into much smaller DC voltages that power the integrated circuits and transistors which in turn do the work inside the preamp, mixing console, graphic equalizer or amplifier. Voltage… View this story
    Filed in: AV • Feature • Blog • Study Hall • AV • Power • Signal • Audio

  • Monday, October 01, 2012
    Amplifier Power Class: Not All Ratings Are Similar
    image
    Bruce Bartlett 10/01/12 11:09 AM,
    In designing a live sound system, you’ll come up with all sorts of questions, such as: One power amplifier is rated at 1,000 watts, and a different brand is also rated at 1,000 watts. Do they actually produce the same power? Suppose you add more loudspeakers in parallel to a power amp output. Does the amp produce more power, less power, or the same? Does each loudspeaker have to handle more or less power as you add more loudspeakers? To… View this story
    Filed in: AV • Feature • Study Hall • Amplifier • AV • Education • Power • Signal • Sound Reinforcement

  • Wednesday, September 26, 2012
    Diminishing Returns: When “A Little More” Isn’t Enough For A System
    amplifiers
    Pat Brown 09/26/12 05:37 PM,
    Intuition is one of the most valuable tools of the sound system designer. But sometimes intuition can lead us astray. Humans tend to think in terms of linear relationships rather than proportional relationships. But most significant changes in an audio system are related to the proportional change rather than linear change. For example, a 2-to-l power ratio produces a 3 dB increase in level, regardless of the initial power. A 1 watt to 2 watt increase produces the same proportional… View this story
    Filed in: AV • Feature • Study Hall • AV • Power • Processor • Signal • Sound Reinforcement • System

  • Friday, September 14, 2012
    Lowell Expands Surge Suppression Offerings With New Models
    lowell
    PSW Staff 09/14/12 04:06 PM,
    Lowell Manufacturing Company has expanded its range of surge suppression products with three new models: ACR-1509-S and ACR-1509-SD (rackmount panels) and ACS-1505-SW-SD (power strip). All three were developed to provide system integrators with high quality, cost-effective surge suppression solutions. The ETL-listed ACR-1509-S and ACR-1509-SD are 1U 19-inch EIA rackmount panels with a total of nine 15A outlets (3 switched, 6 unswitched), front rocker switch, and nine-foot power cord with NEMA 5-15P plug. The ACR1509-S offers single-stage surge suppression, while the… View this story
    Filed in: AV • Live Sound • Recording • Church Sound • News • Product • AV • Interconnect • Power • Signal • Sound Reinforcement

  • Wednesday, August 29, 2012
    SurgeX Announces Axess Ready—IP Integration Of Existing Products
    surgex
    PSW Staff 08/29/12 01:34 PM,
    By adding its Axess IP technology to core SurgeX products, Axess Ready products provide integrators with IP enabled solutions for a wide range of budgets and applications. SurgeX now allows AV integrators to offer a similar experience with existing products, or a more sophisticated power management and protection system when combined with Axess or Axess Elite products. Axess Ready products are fully equipped with IP network connectivity, no additional hardware needed. Once connected, a web interface acts as the control… View this story
    Filed in: AV • Live Sound • Church Sound • News • Product • AV • Monitoring • Networking • Power • Remote • Signal • Audio

  • Friday, August 24, 2012
    Lab.gruppen Unveils New E Series Power Amplifiers For Custom Installation Market
    amplifiers
    PSW Staff 08/24/12 09:55 AM,
    Lab.gruppen has announced the launch of the E Series of power amplifiers developed specifically for the custom installation market. The E Series, made up of three 2-channel models housed in 1U packages, utilizes much of the design philosophy and energy-efficiency concepts found in the company’s flagship PLM 20000Q touring amplifier. All models incorporate Lab.gruppen’s IDEEA (IntelliDrive Energy Efficient Amplifier) technologies and are outfitted with universal power supplies for operation anywhere in the world. Nominal output power ratings per channel (at… View this story
    Filed in: AV • Live Sound • Church Sound • News • Product • Amplifier • AV • Installation • Software

  • Wednesday, August 22, 2012
    What’s The “Right” Wattage For Loudspeakers?
    amps speakers
    Chuck McGregor 08/22/12 03:26 PM,
    “So how many watts can this loudspeaker take?” The technical answer is that it depends on the thermal and mechanical limits of the drivers and crossover components. The practical answer is that it depends on the program material played: its peak/average ratio or transient content and spectral (frequency) content. The REAL question is not what is the power handling, but what is the OPTIMUM size power amplifier to use on a loudspeaker? Rule of Thumb For a rule of thumb… View this story
    Filed in: AV • Feature • Poll • Study Hall • Amplifier • AV • Education • Loudspeaker • Power • Sound Reinforcement

  • Monday, August 13, 2012
    Managing Power To Properly Use (And Not Abuse) Professional Loudspeakers
    image
    Bennett Prescott 08/13/12 06:01 PM,
    The entire industry knows (or should) that loudspeaker drivers are fragile, and that careful attention needs to be paid to how much amplifier power is applied to each component in a sound system. This is especially true in our world of live sound, where we are always trying to push our loudspeakers to get those last few decibels or final quarter octave of performance. While the technology behind transducers has advanced considerably in the last few decades, providing significantly higher… View this story
    Filed in: Live Sound • Feature • Study Hall • Education • Line Array • Loudspeaker • Signal • Sound Reinforcement • Subwoofer

  • Friday, August 10, 2012
    Defining Amplifier Damping And What It Really Means Within A System
    amplifiers
    Jerrold Stevens 08/10/12 05:20 PM,
    Ever have one of your friendly amplifier reps walk in your office to present their new mondo-gazillion-watt beast and point out the damping factor spec of greater than a bazillion? Why, gee-whiz! That’s, like, 10 times more than the other guy! It must be awesome, right? Well, as we have seen before, it depends on how you are going to use it. Let’s start with defining damping factor and see what it means to us. Amplifier damping factor is defined… View this story
    Filed in: Live Sound • Feature • Study Hall • Amplifier • Measurement • Power • Sound Reinforcement • Audio

  • Wednesday, July 18, 2012
    A “Test” To Evaluate Your Knowledge Of Power
    image
    Pat Brown 07/18/12 10:25 AM,
    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 to… View this story
    Filed in: AV • Feature • Poll • Study Hall • Amplifier • AV • Installation • Interconnect • Power • Sound Reinforcement • System • Audio