I'm considering building a bandpass box for my BTL, has anyone here ever heard a BTL in any of these boxes I listed below? If yes, how did it sound? I currently have a box built to BTL specs but tuned to 34hz.. Most people would be impressed by how it sounded and by how loud it got; but I would like it to get louder.

4th order:

rear chamber sealed.

front chamber ported.

Best suited to subs that work best in sealed boxes.

6th order:

rear chamber ported.

front chamber ported.

Best suited to subs that work best in ported boxes.

Dual-bass-Reflex:

rear chamber ported.

front chamber ported.

front and rear chamber connected by a third port.

Best suited to subs that work best in ported boxes.

Edited March 10, 201312 yr by SPL??

Per your goals you do not want a bandpass enclosure.