Question about Sony STR-DB790 Receiver

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Hi, having a problem with my Sony STR - DB790 amplifier. All my surround sound speakers work fine, but my subwoofer is not. The subwoofer has power and is connected using the co axial cable. The subwoofer is also new and in working order. HELP please. Thanks

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  • Master
  • 8,546 Answers

RCA cable. It's called RCA when carrying Line Level audio; Coaxial when carrying digital data.

Does the sub work when you run speaker setup? It's in the manual.

Posted on Apr 01, 2011

  • marnie450 Apr 02, 2011

    No their is no sound when I do a test sound. All the other 5 speakers are working, settings are setup to show a subwoofer is connected. Thanks

  • David Dunn
    David Dunn Apr 02, 2011

    How do we know the unnamed sub is CAPABLE of making sounds and connected properly? Was it working before and spontaneously failed or is this new equipment? It matters.

    Prove its amp will respond to an input by running an RCA feed to it from , say, one of the MD/Tape, Video 1 or Video 2 Outputs. be advised these outputs are NOT volume-controlled so it will be loud if it works. If your sub has volume control, turn it down. Select FM, tune a station and be ready to de-select it. If it still doesn't work, the sub is the patient, not the receiver.

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Posted on Jan 02, 2017

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