2 21 dps vs 4 15 hdc3

not much power for 4 HDC's....

Not sure on the DP's sounding better as I've done installs for both subs and both sounded nice.

if you stick with 2 amps I'd lean towards the IA's, if you step up to 4 amps then the AQ's.

 
2 21's = 692.37 square inches of cone area

4 15's = 706.5 square inches of cone area.

I had that option and went w the 21's because of the fact that no one had put a pair of then in a neon

 
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