nad left channel goes out

Jean,

It certainly sounds like you did the right thing and, yes, the balance control should control the sound in reverse. Just to confirm - you did only switch the cables in one place - the inputs to the amp?

Dick

that is what has me totally confused..the balance control..DOES NOT control in reverse?????????? i thought that was what was supposed to happen..but it still controls left and rt in the same way. the 2400 has the speakers attached to it.. the outputs are plugged into normal(as opposed to lab) on rear i wonder if that is why the balance doesnt change. the a side controls the front speakers and the b the rear..neither one will change from left to right balance..so i am not crazy!! i dont think>>>
just terribly confused..is there an input i am missing on the pre-amp??
jean

The problem might be the speaker or cable feeding it,try swapping them!

i really do not want to be the dumbest one here...but could you be more specific??? swap them from where to where... the speakers on the A channel go diectly out of the power amp to the speakers. the B chanel goes into a speaker switching box.
thanks
jean

On the back of the amp do you have left and right speaker output,if you do swap the speaker wire at that point and see if the problem reverses if it does not the speaker or the wire is the problem.