@terry9
I'm not at all surprised you've not heard this. Subs are in fact a giant PITA to integrate well. If this was work, I'd say they have a very high Total Cost of Ownership, or that the "care and feeding" is much higher than most people realize.
I think that the experience that subs usually muddy and bloat the music is correct, attributing these symptoms large slow drivers is not.
As a result, it is extremely rare that most listeners have ever experienced really good use of subwoofers. I'm not saying its impossible, or that there are not such people on Audiogon. Just saying it's very rare, and not part of the sales brochures. :)
Best,
Erik