What size box,tunning,and aero port would be good for two FI SP4 15's? Also,one port or two? It's for a blazer so am doing sub's up port or ports back,thanks.
I had a 2000 2 door blazer with a fi q 18 side ported sounded great tuned to 28hz ....tried port back with a couple of 12's and with all the back gate rattle and back glass it didn't sound that great.....but if your going with sp4's I'd tune right around 28hz....them blazers will peak in the 40 to 50 hz range anyway so that should yield a better bandwidth
which you think would be better on 7-8k amp power? it'd be nice to pull hairtrick out of it
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