box for 2 b-15's

[loud1500 10+ year member]

I'm looking for some spec's for a single chamber ported box for my 2 B-15's. I have a JBL 1200.1 for each one and have around 7 cubes to play with. I'm looking for about 70/30 spl/sq split. It's going in a 99 chevy 1500 ext. cab. I've upped the power and grounds, alt., I've got 3 HC Power batteries, and 0 gauge power wire. The highest numbers I've hit was almost 148 with a box tuned at 30 something hz with 40 sq. inches of port.

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[abcdefg 10+ year member]

I'm looking for some spec's for a single chamber ported box for my 2 B-15's. I have a JBL 1200.1 for each one and have around 7 cubes to play with. I'm looking for about 70/30 spl/sq split. It's going in a 99 chevy 1500 ext. cab. I've upped the power and grounds, alt., I've got 3 HC Power batteries, and 0 gauge power wire. The highest numbers I've hit was almost 148 with a box tuned at 30 something hz with 40 sq. inches of port.

go as big as u can and tune to about 35hz, and try to get about 100sq in of port