Denon AVR E-400 won't recognize Sub

[musicox]

Hi all,

I bought the Denon last Christmas and have been happy with it, until the video signal went out. Brought it to my local service center, who replaced a board under warranty and it seemed fine until I tried to set up speakers again through Audyssey. The calibration setup doesn't recognize the Infiniti BU-2 I have.

I have tried it manually, read the "Not for Dummies" Sub article, have manipulated the cables innumerable times, set speaker settings to small, made sure the Subwoofer settings were "On" in Speaker Config. Made sure it lights up green on back of sub, have the volume level set to mid, the crossover to max.

It all worked fine before I brought it in to service center, and I will bring it back again if I need to, but I am hoping I am just missing something; a setting or similar, before I do. I have read more than one article on Denon having the worst manuals to use, and I am beginning to agree; so many cross references and footnotes, ugh!

I did switch the cables while the receiver and sub were on, and got the hum from the sub, I'm hoping that means it's not dead???

I'm using a standard(?) Monster RCA cable, going from the one Denon Subwoofer Pre Out to the left "Low Level" input on the sub and nothing. It seems to be all set the same as it was before I brought it in.

Does anyone have any other suggestions please? I would appreciate it.

Thanks in advance!

 

[tcarcio]

Does the sub work when listening to a source? If it does then I would think there could well be a problem with the receiver.

 

[markw]

Assuming it plays test tones. do these emanate from the sub? If it doesn't, I'd say you traded one problem for another. Time to revisit the tech.

 

[musicox]

Thank you both for the replies. I am not sure how to send test tones to the sub exclusively. Would that be as easy as sending a signal from my Cable box audio out or dvd player?

 

[markw]

This is internal to the receiver. All units I've encountered allow you to send a tone that rotates between each speaker, in order to manually balance them. You might want to look in your manual for this. It's usually in or around the speaker setup section but YMMV.

 

[musicox]

Thanks for the advice. I did finally bring it back to the authorized Denon warranty service provider n my area, and he confirmed the HDMI board he had replaces several weeks ago was defective. Devon is sending new one.

 

[TLS Guy]

Thanks for the advice. I did finally bring it back to the authorized Denon warranty service provider n my area, and he confirmed the HDMI board he had replaces several weeks ago was defective. Devon is sending new one.

That receiver is now pretty much worked over. I doubt you will have it long passed warranty, if that long. I would try and negotiate a refund and get a receiver higher up the food chain.

That model seems to have an unusually bad reliability record. Those lower end Denon units though, have never had a good reputation.

My advice is to try and dump it if you can.