STR-DN840 does not recognize my subwoofer... Please help!

If for some reason, my DN840-STR does not recognize my subwoofer... I'm not all the sounds outside except on its own when I turn the volume to the top I hear feedback / interference or whatever. I have checked and rechecked my son, they all look great.

Here are some details:

With the help of speakers monoprice. 2 back surround, 2 front 1 central and subwoofer (powered). I have the right with SB on Bi - Amp, because it's the only way I can get back them two speakers to work. Also, the subwoofer must be installed near the back of the room because of the configuration. Its a small room (12 x 16 - ish).

To connect the subwoofer, I had to take my 16 guage speaker wire and it splice to the DN840 with a RCA cable. On the other end, my speakers Monoprice have four terminals speaker (right side and a left and a positive and negative for each) of the screw on the variety (not sure how else to describe it). In any case, it starts up fine and everything seems to work except receives the sound to the subwoofer.

I am enough fan of technology, but it's my first AV receiver, so I tried to play with the options. No noise / vibrations comes out of the subwoofer when I try the automatic calibration. I played with the sound field by changing speaker model, changed Assign SB, etc..

Any ideas?

I think you have misunderstood what connections for you on your receiver.

First of all, you can use a pair of Bi-wire speakers on this receiver, they must be connected to the terminals of SB ' "highlighted in green below, you should use those for the front speakers. You cannot bi - wire your speakers rear surround as well. You may need to buy some new speakers for this purpose, except if you can wire with one pair of cables (+ & -) for each surround speaker. The image below should help identify what goes where.

Also, you appear manual - Page 85 to use a Bi-amplificateur connection

Can you please clarify the following statement you made:

I had to take my 16 guage speaker wire to connect the subwoofer, and he splice to the DN840 with a RCA cable

If I understand you correctly, if connect your SUB via a RCA cable you don't need connect other sons of speaker for the SUB. However, if you meant that you had welded adapters RCA Phono to your speaker cable that doesn't work! You need a RCA cable for this purpose.

In addition, you should follow the advice given by Jeannettez above to "Change the speaker model", Select 3/2.1 if you have a 5.1 speaker configuration

Further reading:

PAGE 108 - manual

There is no sound or only a very low noise is heard from the specific speakers.

Article from Sony Support: How to make solving no sound from an active subwoofer

Tags: Sony Products

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