feedback question

geoffpac
geoffpac Posts: 1
edited March 2008 in Troubleshooting
I just upgraded my home theater setup. I'm using old Cerwin Vega AT-12 loudspeakers (temporarily), VM-20 center channel, VM-10 surrounds, and DSW-Pro 500 sub, with a brand new Sony STR-DA3300ES receiver. Everything is great but the feedback is annoying. I checked the polarity of the speakers, everything is fine. I plugged the receiver into another room, on a different breaker, with the VM-20 and still heard feedback from the speaker. I returned my original receiver, and got another; still with the same problem. At low volumes, the noise is intolerable. My old JVC has no feedback, and my old STR-DE845 has no problems. Does anyone have any suggestions? Thanks
Post edited by geoffpac on
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Comments

  • ward91
    ward91 Posts: 338
    edited March 2008
    feedback??????????????
    what do you mean? i dont understand. feedback oscillations in the amplifier circuits or feedback due to an open microphone?
    ELECTRONICS
    arcam cd93
    linn wakonda
    MC2 MC450
    Teac ud h01 DAC


    SPEAKERS
    Tannoy DC6 t se .
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  • Systems
    Systems Posts: 14,873
    edited March 2008
    Do maybe mean ground loop hum?
    Testing
    Testing
    Testing
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  • [Deleted User]
    [Deleted User] Posts: 7,658
    edited March 2008
    Hello Geoffpac,
    When you say, "feedback" that is normally associated with a rising, howling sound usually caused by a microphone picking up the sound produced by the speakers. Are you referring to a hissing sound? If so, this could be caused by the receiver's signal-to-noise ratio being less than it should be.
    Regards, Ken
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