How much polyfill do I need in the enclosure?
Polyfill is used for absorbing standing waves in an enclosure. In non-servo subs, it is also used to occasionally adjust the Q value of bass roll-off. In this case, a heavy amount of polyfill will be needed to achieve the desirable Q value. The downside of this practice is that low level resolution is somewhat compromised. This is mainly caused by the nonlinear absorption rate of polyfill. Anyone who has built their own full-range speakers knows that too much polyfill is not always a good thing. Overstuffing the enclosure can make the sound less dynamic.
