Surround Sound
my surround sound fades in and out unless the volume is high?
I have a RCA surround sound receiver with 6 speakers including the subwoofer that is hooked up to my 42″ RCA HDTV, and sometimes connected to my gaming pc. Unless the volume is up high the sound will phase/fade in and out. At first i thought the speakers werent placed correctly but i can hear each individual speaker doing it. Any thoughts as to what could be wrong?
I guess it depends on how you have it hooked up. If, for example, you have the equipment hooked up to the TV, and then the audio outputs from the TV go to the surround receiver, it could be that the volume of the TV is turned down and it’s set for variable audio outputs. In that case, the line level outputs from the TV would vary with the volume setting on the TV. And, if those signals are too low into the receiver, the logic circuits in the receiver may no know quite what to do with them, so the audio tends to fade in and out. The solution there would be to set the TV volume output to fixed instead of variable, or always keep the TV volume on high (with the TV speakers off, of course).
Another problem might simply be the surround setting (mode) you selected on the receiver. Try different mode settings and see if the problem persists on all of them.
There is also a setting on the TV audio that allows you to reduce the dynamic range of the audio, such that the low audio passages aren’t quite so low, and the high audio passages aren’t so high.
Finally, you might turn up the volume on the center channel only. The surround channels are usually background sounds. The right and left front channels are for stereo effect. But, the center channel is where the main dialog or game sound comes from. And, if this is turned down too low, the sound out of the other speakers may fluctuate so much that it’s causing this fading effect.
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February 3, 2011 8:27 am 
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