Your going to say that at high volume if channel 1/2 is set to +3db and channel 3/4 is set to 3.5db then it wont cause any harm or distortion?
The whole point is for harmony. If the voice coils are not getting the same signal it is like two people siging slightly out of sync. Sure it might not cause the amp to blow up or the sub to blow. But its not ideal and *might* cause damage over time vs a properly setup single channel setup.
Needless to say find a single channel monoblock amplifer and avoid all the multichannel BS. Its not worth the trouble.
