Question about Denon AVR-787

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No subwoofer signal!?

Ive got my jbl subwoofer hooked up in stereo to my denon receiver but not getting any signal to it.

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SOURCE: No sound on cable TV for Denon AVR 1905 Receiver

Audio setup on the TV, needs to be swited to Fixed or both, this is usually the same on all T.V.s....

Posted on Aug 25, 2008

  • 312 Answers

SOURCE: I recently purchased a new

Your sub-woofer apparently does not have an amplifier built into it. This type requires you to use your front left and front right speaker output to got through it to your regular speakers. It is called a passive sub-woofer for that reason.
To set it up, Connect your front speakers to the "output" of the sub. It should say "to speakers" on it.
Then connect the Speaker Outputs for the left front and right front on your Denon AVR-391 directly to the Sub. It should say on the back of the Sub "to amplifier".
Here is some theory you should know, if you don't already know it, that will help you get a satisfactory result in setting up this system.
There is a condition on setting up all speakers and subs that not everyone know. It's call "phase alignment". Phase alignment (A Good Thing) refers to all of the speakers in a system moving in the same direction (in and out) at the same instant in time. This gives you much clearer sound and better response from your sub-woofer.
Phase Cancellation (a bad thing) is when some of the speakers are moving out and other moving in during the very same instant in time. It causes problems in sound.
Here is how to handle it:
On the back of the receiver the speaker terminal outputs are colored Red and Black. Black is considered negative and Red is considered positive. On the back of the Sub woofer and on the speakers the same colors apply. MAKE SURE THAT ALL OF THE CONNECTIONS GO BLACK TO BLACK AND RED TO RED WHEN CONNECTING UP THE SPEAKER WIRES.
The system will work either way. But you will have severe bass loss if the woofer wiring is out of phase because of phase cancellation.
Hope this helps,
Best Regards,

"Phase Cancellation"

Posted on Jan 05, 2011

  • 8546 Answers

SOURCE: I bought a Denon AVR-2807


This is strictly a remote control failure.

Read this procedure to possibly fix the remote:
They also sell replacement remotes.
Or look on eBay, usually much cheaper if available.

Another thing would be to make sure the receiver's remote eye isn't picking up infrared from anything else in the environment.

Posted on Jun 22, 2011

  • 349 Answers

SOURCE: Subwoofer playing in stereo sound

When Stereo was the only "2 channel audio output" available. We never had Sub-Woofers and relied upon Bass and Treble controls to give an overall balance and Bass Depth to suit one's preference.
A Bass Sub-woofer is intrinsically part of a Multi-channel audio system. It is the " .1" part of the 2.1, 5.1, 6.1 sound system/s.
That is why you do not get Woofer Signal and thus output, unless you use more than just "Stereo Audio Amplification".

Posted on Oct 30, 2011

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This is strictly a remote control failure.

Read this procedure to possibly fix the remote:
They also sell replacement remotes.
Or look on eBay, usually much cheaper if available.

Another thing would be to make sure the receiver's remote eye isn't picking up infrared from anything else in the environment.

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