Quote:

The main volume on your receiver controls the volumes on all of the channels.

What do you mean "...how is it doing this when all the other levels are remaining unchanged?". What "other levels" are you referring to?

Maybe you should draw a diagram so that we can see what you are trying to say .



All of the speaker(s) volumes, except the sub, are controlled by the amount of watts they get from turning the volume knob on the receiver up or down. The line level from the receiver to the sub remains at 10 and it does not change no matter what the volume on the receiver is set at. Also, the volume knob on the sub itself remains static at 7 no matter what the receiver's volume is set at.

So in order for the sub volume to go up with the rest of the speakers, SOMETHING has to be changing in the signal/line-level that is being sent to the sub because it is the only signal the sub is receiving from the receiver.

Sheesh, now I'm getting corn-fused!

"Tis better to desire that which you do not have, than to have that which you do not desire!"