My Rt20's have always had too much boominess in the bass so I keep the amp control on the back of the enclosure turned way down, in about the 3 o'clock position. My system is a B&K Ref 20 and I don't have the capability to adjust the treble or bass. The way you control the sound is by selecting large or small
speakers. In small the the drivers don't receive the bass and those lower freqs go to your subs. I have the subs hooked up directly to processor output which is an improvement in overall sound but did not solve the boomy problem. Has anyone else experienced this problem and if so did you manage to fix it.
For home theater this bass might be OK for the special effects in some movies but it is pretty annoying for good music listening which is mostly what we do.