Next week i'll build another box for my 9515. Ported.
In the manual, the ported box size is 2.48ft³ but i sent a email to mtx answering for a box for my sub and the answer is:
2.92ft3 port - 2"W x 15.5"H x 27.5"L
and now what should i do?
The manual box or the Technical Support box?