[Anthony01]

Its a Yamaha HTR-5860. About 2months ago, I was playing xbox, and a explosion went off on the game. I lost audio from both left and right speakers, no sound would come out. Had to switch them over to the B speaker outputs in order to get my surround sound back. Well just mon., while watching 2012, I noticed bass is real quiet. Do a speaker test through the receiver, and I now I have to increase the decible on the sub channel all the way up to 10db and the gain on the sub itself turned all the way to max. Just to get some bass. If I turn the db level to 0 and the gain 1/2 way, you get no bass. Is it poor signal from receiver or is it the amp in the sub going south??

The LFE indicator is lit on the receiver, and the green light on the sub comes on when a movie starts.

 

[RoboRay]

Does the subwoofer cone move while playing something with a lot of bass?

 

[Anthony01]



Quote:
Originally Posted by RoboRay /forum/post/18257984


Does the subwoofer cone move while playing something with a lot of bass?

Barely...and it just doesnt sound right

 

[RoboRay]

Unfortunately, that "explosion" (or something else) may have killed the subwoofer. The speaker cone could have been damaged, possibly from exceeding its mechanical travel limits or even from severe distortion from the internal amplifier clipping due to being incapable of providing the power demanded for the "explosion."


All the receiver does is pass a line-level signal to the subwoofer's amp, so it's probably OK.


EDIT: One more thing to check, though... Take a look at the "channel trim" settings in the receiver setup menus. It's possibly that your sub may have been turned way down there.

 

[MichaelJHuman]

I think he did indicate that he tried to max the channel level?


Sounds like you may have an issue with your powered sub. Also sounds like there's a possibility you are driving your system beyond it's limits. You may need to reconsider what levels you play at?


Not sure what B outputs have to do with surround sound, either. Did you permanently blow some channels? Your explanation was a bit confusing.

 

[Anthony01]



Quote:
Originally Posted by MichaelJHuman /forum/post/18258267


I think he did indicate that he tried to max the channel level?


Sounds like you may have an issue with your powered sub. Also sounds like there's a possibility you are driving your system beyond it's limits. You may need to reconsider what levels you play at?


Not sure what B outputs have to do with surround sound, either. Did you permanently blow some channels? Your explanation was a bit confusing.

The yamaha I have displays the volume from -100db all the way to +14db. When I play xbox its at -45db to -40db and for movies -25db to -15db. Thats about as loud as I go with it. I used the optimizer thats built into the Yahama to set up the speakers. So the gain levels per speakers are pretty much within a 5db range of each other.


What I was saying about the B channel is when I wired in all my surround sound speakers I had them on the A channel. Had no speakers hook into the B channel. Well after that incident w/ the xbox game, I lost all sound from my right and left speakers, regardless if it was the xbox or the bluray. So I had to remove the speakers from A channel and switch them over to B channel. Hopefully that clears things up.

Thanks guys

 

[RoboRay]

The A/B channels are only for your front Left and Right speakers. That doesn't have anything to do with your surround speakers.


There are two sets of surround speakers for a 7.1 setup: Surround (which go on each side of the listener) and Rear Surround (which go behind the listener). In a 5.1 setup, which you appear to be using, only the "side" Surround speakers are used. You shouldn't have anything connected to the Rear Surround terminals except in a 7.1 speaker configuration. If the "side" Surround channels (which you were referring to as "A" above) no longer produce any sound, but the Rear Surround channels do, there is something wrong with your receiver.

 

[MichaelJHuman]

That was also my thought - that there's something wrong with his receiver. He can run his test tones to ensure the correct channels are going to the correct speakers.

 

[Anthony01]



Quote:
Originally Posted by RoboRay /forum/post/18262660


The A/B channels are only for your front Left and Right speakers. That doesn't have anything to do with your surround speakers.


There are two sets of surround speakers for a 7.1 setup: Surround (which go on each side of the listener) and Rear Surround (which go behind the listener). In a 5.1 setup, which you appear to be using, only the "side" Surround speakers are used. You shouldn't have anything connected to the Rear Surround terminals except in a 7.1 speaker configuration. If the "side" Surround channels (which you were referring to as "A" above) no longer produce any sound, but the Rear Surround channels do, there is something wrong with your receiver.

I am running 7.1 and it was my left and right fronts that lost audio. Thats when I hooked up the left and rights fronts to the B channel. Then on the receiver, I have both A and B channels working. cause the display is lit up on the receiver

 

[RoboRay]

Oh, ok. I misunderstood and thought your surround speakers had stopped working.

 

[Sitting Bull]



Quote:
Originally Posted by Anthony01 /forum/post/18264995


I am running 7.1 and it was my left and right fronts that lost audio. Thats when I hooked up the left and rights fronts to the B channel. Then on the receiver, I have both A and B channels working. cause the display is lit up on the receiver

Well, it sounds like all you can do is re-run your speaker/room calibration program on the AVR and see if those front speakers come back to life. If they don't then you have blown something up in the AVR with that big bang you spoke of in the first post. If so, then all you can do is take it into the repair shop and hope it is covered under warranty.