Question about Denon AVR-2500 Receiver

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BOOM SOUND AT AUDIO MODE CHANGE

WNEN I CHANGE AUDIO MODES ON THE RECEIVER I GET A BOOM FROM MY SUB WOFFER THAT WAKES UP THE HOUSE. ALSO, A FEW SECONDS AFTER TURNING OFF THE SUB W I GET A LOUD FART SOUND FROM THE SUB W.
DO I HAVE A SUB W PROBLEM OR A RECEIVER PROBLEM OR BOTH?

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Suggest turning the volume down on the Receiver/Amp before changing modes. Changing modes can produce signals that can hurt speakers if driving at mid-high levels.

Regarding the sub, turn off the receiver first, then turn off the sub. When turning everything on, turn on the sub first, then the receiver. If you still hear the noice in the sub, turn down the volume in the sub before turning it off (making note of what volume level you prefer for it when it is on).

Posted on Nov 05, 2007

  • Gary Morgan Nov 23, 2011

    Did you ever find a solution to this problem? I recently started having the same problem after 15 years of perfect operation! Please respond to gkmorgan@att.net

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Hello
Panasonic TV's after 1996 can be set to "Serviceman Mode" with the
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C - Serviceman VCJ Cut-off adjustments. These include Red, Green
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----------------------------------------------------------------------------------
PE77U / PX75U / PX77U / PZ700U / PZ750U
PD60U / PX6U / PX60U / PX600U
PD50U / PX50U / PX500U :


* Hold down the {VOL -} button ON THE PLASMA TV.
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