Hi John: If my sub is set correctly, should I be hearing any vocals (baritone opera singer excluded.) If I switch to playing instrumental music (pipe organ), and put my ear to the sub, I only hear some kind of 'dirty' bass. If I fool with the volume knob on the rear of the sub to get rid of the 'dirty' bass, I get nothing.

What should a properly set up sub sound like in terms of vocal and instrumental. Again, maybe I'm expecting something the sub can't do.

Eric G.