GX 7

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Thu May 26, 2016 10:25 am

  • I have two GX7s. Specs/manual state 10.1 amps draw in a 4 ohm load. The thing is the math on that is approx.1200w, not the 1000w per side @ 4 ohms as the manual/specs state. I normally go by 120w = 1 amp, approx. Can anyone elaborate on this?
    Thanks, Jackson.
    jackson
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Thu May 26, 2016 4:27 pm

  • The typical worst-case average current draw, with a 4Ω load on each channel, would be 10.1 A on a 120V AC mains.

    If you operate the amp on a test bench and run both channels simultaneously to 63.3 V rms into 4Ω loads with a continuous sine wave, the current draw will be about 40 A.

    So the actual current draw will vary with the application: normal audio, or a steady, continuous test signal?
    Bob Lee
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    Bob Lee
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Mon May 30, 2016 7:18 am

  • Thanks Bob,
    So I should put each GX7 on a separate 20 amp service to get the full 1k watts per side on each amp should I go for the gusto so to speak.
    jackson
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Wed Jun 01, 2016 9:25 am

  • A 15 A circuit will be fine, so a 20A one will work also.
    Bob Lee
    Technical Communications Developer
    QSC, LLC
    Fellow, Audio Engineering Society
    Image
    "If it sounds good, it is good." —Duke Ellington
    User avatar
    Bob Lee
    QSC Audio Products
     
    Posts: 2518
    Joined: Thu Mar 06, 2003 2:01 am
    Location: Costa Mesa, California

Wed Jun 01, 2016 11:05 am

  • As always, Thanks Bob.
    jackson
    The high rail
     
    Posts: 130
    Joined: Thu Aug 20, 2009 5:13 pm
    Location: warwick, ri usa



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