Re: single 15" ported, lowest F3?
since its a racing car, why not go with a pair of 8s or single 10 or 12 and tune low? the 15's not gonna be to heavy, the enclosure will be though if your going for lows. Your gonna want a birch enclosure instead of normal mdf to save on weight.
Clip city b1tch, clip clip city b1tch. 10's, 12's, 15's, goin up in flames b1tch.
2009 Sienna 3.5L Subs : C2 threatcon 15s. Sub amp: hifonics brx 2400.1D x 2
Headunit: Pioneer 80PRS bought used from vertex audio Mids/Highs amp: PPI Phantom 900.4 - bought from dragnix
Front stage: 3 way active front stage with Massive Audio CKX tweets, alpine type R 6x9 midbass in doors + DB drive pro audio 6.5 in the kick.
320 amp Singer alt almost installed. 0 gauge Audio technix ofc all around, 2 group 31 agms in the back.