HPR151w Amp Module Question

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

Wed Feb 04, 2015 10:27 pm

  • I have a couple HPR151w Amp Modules- http://www.qscparts.com/wp00151600.html

    According to the schematics, the amp put's out approximately 100w to the high's, the same for the mid's and approximately 400w to the low's. Yet the spec's say it's a 700w amp.

    Can someone please explain?
    sbrigman
    Newbie
     
    Posts: 2
    Joined: Wed Feb 04, 2015 10:19 am

Thu Feb 05, 2015 11:14 am

  • The HPR151w (and the HPR181w as well) is a subwoofer and doesn't need to put out any power to mids or highs. Instead, it uses what would correspond to the LF power section of one of the two- or three-way models, and it powers a 4Ω driver instead of an 8Ω one (as used in the two- and three-way models). The lower load impedance and absence of power demand from other frequency bands allows that amp section to put out significantly more power than in the two- and three-way HPR models.
    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

Thu Feb 05, 2015 3:33 pm

  • Are the other power sections available on this amp module?
    sbrigman
    Newbie
     
    Posts: 2
    Joined: Wed Feb 04, 2015 10:19 am

Fri Feb 06, 2015 10:18 am

  • The component locations on the circuit board are there, but the components are not.
    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