I need help with my speaker selection. The amp/cab is a Carvin Pro Bass 200 Original speaker that is blown is a Carvin PS15 It is a ported box just under 1.7cu ft. Rear ported (1.5 x 15.5) vent length is about 6 inches. The drivers that I have are. (all 8 ohm) JBL 2205 JBL 2205H JBL 2225H Eminence Beta 15a Last night I put in the Beta 15a and blocked the port. Also filled it with 20 oz of pillow stuffing. Sounds OK but the weight of the Beta 15a has me a bit concerned. It is very light compaired to the orher speakers.