When I speak of SQ I mean over all....I didn't care for the midrange or tweeter "tone"...it's more of a personal preference type thing.
AP setups DO NOT give you "skull crushing" bass. As a matter of fact it will actually make a woofer play quieter than the same woofer in a traditional setup. They are very linear though. The closest thing to an AP membrane setup is a free air setup. They are very similar but in the AP set up the woofer gets additional support from the AP mats. Helps control the movement of the woofer much like the air in a sealed box acts as a damping spring.
AP mats are for "sound quality" only, NOT sound quantity.
sound quality = all frequencys well balanced in the full spectrum of sound. If your bass booms it is not considered linear or balanced.
Basically, if you want boom, use a sealed or ported box. Don't use bandpass (they boom but are very mono tone), isobaric, freeair, or an AP setup.
