Re: how much polyfil is enough?
Not gonna happen. it might cover for .1 to .2 cubic feet max but not .4. Your going to need a lot more and you'll be introducing a lot of heat if you over stuff it.
Clip city b1tch, clip clip city b1tch. 10's, 12's, 15's, goin up in flames b1tch.
Subs : SSA Zcon 12 in a 4th order in a trunk
Sub amp: hifonics brx 2400.1D
Mids/Highs: PPI ION 520.4 - bought from trumpet
Headunit: Pioneer 80PRS
Front stage: Type R components <== Needs upgrading asap.
singler 180 amp alt with kinetik hc1800 under the hood and 2 hc 2400 in the trunk.