I rate the bass about a "D" on stock Clarity, with the mods I've done, I would rate them a solid "B''. Bass drivers are dipole, too! Sonic waves that are 180* out of phase, happen inside the cabinet. Thick or multi layer walls would be excellent. Not an option. Absorption is. It so happens that the aluminized driver with butyl rubber surround is a better barrier than paper with foam surround, a better sonic barrier to; the out of phase waves emitting out the front of the driver. There will be some cabinet volume reduction, by adding 3/4" triple layer foam and cross brace, but I believe there could be even more benefit with adding thicker 11/4" triple layer foam. I found the bass response; faster, tighter, deeper(front to back) so far. I plasti-clayed the out side of port tube. I think the port now does what it was designed to do. Now, when I placed the speakers about 3 ft from rear wall, there is some real nice lower bass ambience added to the sound stage. I think the velocity of the sound waves increased with the reduction in cabinet size. I don't think it really lost any lows either, the ports are supposed to produce them. Plasti-Clay really is great stuff for quelling vibration. Frank Van Alstine has been known to recommend it to both inexpensive and expensive speakers. I have only a hand full of fiberfill covering bare electronics inside the bottom chamber of the speakers. Something to keep in mind when using Poly fill; don't pack it in tight, it'll lose it's ability to absorb sound waves. The mid bass is so much tighter, I had to put 1" single layer foam in my Klipsch RW-12 sub to match up with the new found the punch and speed of the reworked Clarity. I can tell you these speakers used to sound thin, like tall bookshelf speakers. They sound like true floor standers , now. Next, I'll tell of more improvements in mid range.
