I just finished and installed my DC audio M3-8. I built the box out of Baltic birch (the real shit) and installed LEDs and polycarbonate. Let me know what you think. The subwoofer sounds amazing and its not even broke in yet. Hits the lows very well for an 8" sub.
The box specs are. You can see my build by clicking on the link in my sig.
Oh its in the back of a 1999 Toyota Tacoma 2wd
11.5 H
26 L
10.5 D
Gross volume 1.28
Net volume .76 this is after sub and bracing displacement.
Physical port length 30.25"
Tuning is 36.15 HZ
Port height 9"
Port width 1.5"
Port area 13.50
Port area per foot 17.85
Port ratio 1:6