Center speaker output of my str-de675

SOURCE: STR--DG910: no rear speaker sound, no center speaker sound

if you confirmed all connection repeat your speaker setup.

SOURCE: Only one speaker working on my str-de675 receiver

If the speakers themselves work fine, then the problem lies within the amplifier output. The channels can go bad after hard use, they can be repaired but it may well exceed the cost of the amp if it is not just one channel. Also be sure that you are hooking up speakers that are rated for your amplifier by matching the OHM resistance of the amplifier to compatible speakers.

SOURCE: Im going to be running a set of BOSE acoustimass

By set, do you mean just the satellite speakers? Without the sub? With the sub?

Your receiver front, center and rear channels are rated at 100watts per channel at 8 ohms. If the Bose speakers are 8 ohm speakers, you're good to go. And as long as they have speaker connectors on them, and are not specifically made to work with the sub, or with each other(in other words proprietary). If you are using the entire Bose system, it should work fine.

Hope this helps.

SOURCE: Sony's STR-DE675 5.1 Channel Receiver - Speaker OFF problem

There's a button that turns the speakers OFF right above the headphone jack.

Get the manual: retrevo.com

Testimonial: "@dunnbiker Very true on assumptions! I've tried everything the manual suggests. Right now, nothing is connected to the unit, but upon power up, I get the SP:OFF display (which is not seen in the DEMO mode). I will try the headphone jiggling idea and see what happens."

SOURCE: Sony STR-K670P Surround Reciever. No output from

This is a common problem that a lot of people have with this system. The problem is in the connection of the Left and Right Speakers to the receiver. I had this problem too.
What you need to do is actually open up the receiver using a screwdriver. Once it is opened up you will see a circuit board and lots of wires. Look for the red and blue wire that should be pretty easily visible. Cut each one, then strip the ends some, and reattach the ends but to the opposite color- make sure to solder it as well. On some models they messed up the connections and it got switched. Once you do this, the left and right speakers should work great. Hope this helped!!