Because the sub is recieving the low freqs from the amplifier, its not a good idea to wire this with your A output !
(assuming the sub output is dedicated).
I guess you could wire it to the A output, but make sure you use a decent filter/crossover at the sub....but then again ya would have just reduced the impendance of this entire system.... so not really a good thing to do !
I do have the icons for A & B. The A icon disappers when I push the buttopn, however the center speaker and the sub stay on. I also have the manual and have checked to make sure I have the wiring correct, at least I think I do. Thanks for the reply.
I just read the manual for your amplifier, very nice !
Anyhow, it might pay to check your "speaker set", "set menu settings" on page 24.
Also make sure you have selected the correct impedance. (look on the speaker itself). Just remember if your using an 8ohm speaker on a single output and then add another speaker to that same output, the impedance will be reduced by half.
How many speakers are you using?
Page 25 shows you what settings to use for different speaker set ups.