my new 604 cabinets I'm building.

[cradeldorf]

Ok yesterday I did the backs up with 3/4 x 15 inch gaps on both sides...45 sq inches of port total,
sounded pretty good. Then today I put 6 of those 1 5/8 x 8 x 16 patio paver blocks in the bottom of both speakers. That brought the mids up considerably and the lows down and solid. Really sweet sounding now. Grills next.

EDIT: I put together a vid to let you hear them.

http://www.youtube.com/watch?v=4-6Yzm48d04