12" or 15" for this box

glock
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need help guys ..i cant decide what to get ...here is a little info,i have a ***** am and the box i going to get that fits the rear well it has 1.92 cubic feet per side ...i was going to go with 2 15" or 2 12" ....the amp i am going to use is a sundown 1500d the 2-12" i was looking at are FI SSD or FI Q and the 2-15"are diamond audio d615...its a sealed box ....for that amount of air space (1.92cu ft per side) what would give me the best bass sound...thanks

 
No way 2 cu feet is enough for a ported 15. If you're gonna do anything, port a 12, it'll get louder than the 2 sealed ones.
Nooo if you only do one sub he would have 4cu feet.

1 15 inch ported would be best here. I say Fi Bl 15"

 
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glock

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