I haven't ordered new woofers yet as i'm still playing with adjustments and really need the room closed off to get a good listen in the upper db range. I did change the attenuation 1db(from 7db to 8db) and it seems a move in the right direction, it's hard to tell with only 1bd adjustment. I also tried some different preamp tubes i had laying around. The Electro Harmonics 12AX7 GOLD. These little babies made i nice improvement in the sound stage opening it up a bunch and brought out strings and cymbals a bit more. Over all, it's sound pretty badass, but i'm still looking for a bit more bass. I might make another adjustment on the mid attenuation and set it a 9db. This should bring out a bit more bass. With the B&C 85TN mid driver spec at 107db and the Kappalite 3015LF at 96, that would give a 2db spread between woofer and mid.