Trying to get a decent sound in my 2000 Civic ex without blowing the budget in one whack. Heres what I have:

JVC KD-R600 head
Polk DB651 in the doors
Polk DB691 in the deck
JL Audio E4300 4 channel amp

I have a Kenwood kac729s amp sitting around so I bought a Polk DB1040dvc subwoofer for a little added kick. The instructions say the sealed enclosure should be .66 cubic feet but they don't give any info for a ported enlosure. My old tired Kenwood isn't the strongest amp so I thought I'd put it in a ported box to get the extra volume but I don't know where to start. Thoughts?

 

try 1-1.5 cubes tuned to 32-34 hz

 

Resonant Frequency 35 Hz
Qms 10.9
Qes .7
Qts .6
Vas 1.17 cubic feet/33.3 L
Cms 190. Micro Meters
Bl 7.8 Tesla Meters
Sd 54.25 sq in/350 sq cm
Xmax (linear) .728 inch/18.5 mm (peak to peak)
Mms 108.8 g

Use the above Thiele/Small Parameters and a box program...
http://www.google.ca/search?sourceid...b+box+programs to design a vented, [ported] enclosure. 94