Originally Posted by tbook
I'm reading this:
"How this works is that if you have front channel Speakers that have separate speaker connections for the midrange/tweeters and the woofers (I am not referring to the subwoofer, but the woofers in your front speakers), you can reassign the amplifiers running the 6th and 7th channels to your front channels. Then enables you to retain a full 5.1 channel setup, but still add two additional channels of amplification to your front left and right speakers
My idea is that if indeed the actual center channel in the receiver is busted, is the above "bi-amping"? And is it a totally separate set of channels or amps from the original center channel, so that if that is broken, this will work?
I'm not yet ready to run out to the service center which is miles away and need a solution asap. most DD tv channels are unbearable to listen to and have to switch to multi-stereo for now.
Right. That quote is describing "passive" bi-amping -- one channel drives the upper frequency speaker drivers and the other drives the power-hungry woofer. With modern solid-state receivers and amps it provides no improvement in audio quality whatsoever. It's just a feature that's cheap to provide and caters to people who have memories of needing to doing it when using limited-bandwidth, low-powered tube amps. For them, bi-amping was a necessity. Tube amps have many limitations that must be taken into consideration, but many people still like to use them.
Bi-amping cannot do anything for a dead center channel.
However, many people do enjoy listening to systems which have no physical center speaker. If you explicitly disable the center channel in the receiver, it'll redirect the audio from the front center channel to the front right and left speakers. Also, if you disconnect the cables running to the center speaker, Audyssey will notice that there's no speaker in your configuration and will configure the redirection itself. This is called having a "phantom" center speaker.
If the output to the center speaker failed after you ran Audyssey, then you'll get the problem you've noticed, with that channel's audio being completely lost.