Is GX3 amp common ground?

Moderators: Cameron Shoffner, Christian Cook, Kirk Fyvie, Martin Barbour, Gary Evans_QSC, QSC-Dale Sandberg

Tue Oct 18, 2016 10:17 am

  • Looked at a schematic I saw online to try finding out if GX3 is common ground. To me it appears NOT common ground but not positive in my assessment.

    Is the GX3 common ground at the output, or no?
    whoaru99
    Possibly an old pro
     
    Posts: 31
    Joined: Mon Nov 17, 2008 2:19 pm

Fri Oct 28, 2016 12:44 pm

  • You are correct. The GX3 and GX5 amps do not have a grounded output terminal. They use low-side current sensing, which allows simpler, less expensive circuitry than the usual high-side sensing, but it separates the low side from ground (and also prevents operating the pair of channels in bridged mono).
    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



Return to Power Amplifier General Discussion - Applications, tips and tricks, and more




Information
  • Users browsing this forum: No registered users and 1 guest