




The biggest factor is the conservative tune chosen by the factory, more then the woofer being IB. although the two alignments may sound different, the output of a 10" IB and a 10" small acoustic suspension would be very close. Output as in moved air. In reality, on some of those hulls, the "IB" cavity behind the woofer is nearly closed. This actually works against the woofer, not in favor of it.
Unleash the 600W amp potential, I think you might have a different option of the woofer.