Spider for Treo MTX TC Sounds Eclipse Audio Pulse & Fi - $39.99
15" Treo TSX dual 4 Ohm Subwoofer - $80.00
Spacer for Treo MTX TC Sounds Eclipse Audio Pulse & Fi - $19.99
Treo 12in CSX Competition Subwoofer - Rare Custom Built - $550.00
What you describe may have more to do with how they are wired than the box they're in, unless the box was ported. Putting the subs in the wrong box can damage subs.
The subs are not all that bad, they are not the best, but there are other things you can do to improve the output of the system. Shop around for a shop that is good at high output enclosures. up to 80% of the sound your subs can make depends on the b...
I'd go with the Treo. Lots of people falsely criticize it for the lack of automatic email checking, but you CAN tell it to under VersaMail's settings. BlackBerries are't as powerful as the Treo, and you can do much more on a Treo. TONS of programs ar...