reflecting 10+ year member
CarAudio.com Elite
Do 2 12s ported, with subs/port up firing at the rear window. I have a 240sx sitting here right now that we did that setup too(has since been removed). Did a 153.4db last year with 2k rms on two 12s. The car peaked at 42hz with that build and played down to around 30ish..I do know it did a 147 and change at 35hz.
We did a single 18 but to be real, most of them wanted more air space then what you can really give them back there. 2 15s would work as well, but on the skimpy side for a box.
We did a single 18 but to be real, most of them wanted more air space then what you can really give them back there. 2 15s would work as well, but on the skimpy side for a box.