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Power Amp: Channel 2 active even in bridge mode?

Discussion in 'Amps and Cabs [BG]' started by amos, Jan 14, 2004.

  1. amos


    Oct 23, 2003
    SE Portland Oregon
    I have my PLX 1602 set to bridge and yet the signal lights still indicate channel 2 is still active (slightly more than channel 1 in fact)

    what could be causing this?
  2. Do you have the gain turned all the way down for channel 2?
  3. amos


    Oct 23, 2003
    SE Portland Oregon
  4. alexclaber

    alexclaber Commercial User

    Jun 19, 2001
    Brighton, UK
    Director - Barefaced Ltd
    Channel 2 is providing half the voltage swing in bridged mode so it's definitely active. The difference in the LEDs is just down to metering imperfections.

  5. Bob Lee (QSC)

    Bob Lee (QSC) In case you missed it, I work for QSC Audio! Commercial User

    Jul 3, 2001
    Costa Mesa, Calif.
    Technical Communications Developer, QSC Audio
    As Alex said, bridge mono uses the output voltage of both channels; without both channels, it's not bridged. If you want to use just channel 1, then you'd have to run the amp in stereo and connect only to channel 1's inputs and outputs.
  6. amos


    Oct 23, 2003
    SE Portland Oregon
    thanks for clearing that up in my head

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