Question about Denon AVR-1908

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Subwoofer attached to Denon AVR 1908 stops working. I was able to go in the manual setup and got it to work. This time nothing seems to make it work though the subwoofer is correctly connected.

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Posted on Jan 02, 2017

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SOURCE: Denon AVR-987 System setup lockout

YOU NEED TO HAVE A MONITOR OUT CABLE FROM THE DENON COMPOSITE, S-VIDEO, COMPONENT OR HDMI TO AND UNUSED INPUT ON THE TV.
SELECT THAT INPUT ON THE TV AND PRESS THE SETUP BUTTON ON THE DENON REMOTE AND YOU SHOULD GET A VIDEO SIGNAL ON THE TV TO UNLOCK

Posted on Mar 03, 2009

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SOURCE: subwoofer works in test mode on denon avr 790. but

I had the same problem. The system from the factory does not ship confgured for continuous subwoofer output. To fix this, do the following:

1. Enter the system menu.
2. Go to "Speaker Setup"
3. Select "Bass Setting"
4. Change the setting from "LFE" to "LFE+Main"

That should do it... You can also see this information in the "Bass Settings" section of the product manual on page 26.

Posted on May 04, 2010

markfreedman
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SOURCE: I recently purchased a new

Hi,
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.
IN A SUB-WOOFER, IT CAN CANCEL OUT THE LOW NOTES.
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,
Mark


"Phase Cancellation"

Posted on Jan 05, 2011

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