MixhaL

I think I will get room for about 8 cubic foot but this is max. So what subs should I buy?

Yes, I know that an enclosure is not good and tuning is too high. In the past I wanted buy a 4x12 that why enclosure is so small but already I know thet was a mistake and now I want to buy something stronger whitch kick better. So I decidet to buy 2x15 and then make big enough box and tuned much lower. So question is : what sub should I buy? 2x12 RE SX or 2x15 FI BL ?? Or maybe something else? Thank you for your time.

Hi At first sorry for my language. I have a honda civic coupe 6 generation and my audio is: -Amplifier hifonics BXI 2600D -2x RE AUDIO SE12D4 wired at 1 ohm -Power cap DIETZ hybrid 20F -Alternator 160Ampers Soon I planing to: -do BIG III -add extra battery in the trunk Subwoofers is in the trunk and he is ported, about 2,5-2,8 cubic feat for bouth. They play quaiet good but I want something what play mutch louder. I planed to buy 4x RE SE12D2( cone area is big of 4x12" so a lot of air could be move ) but trunk is not enough big and enclosure will be to small and bass will be not too low(there is no any posibility to tuned low like in manual).At present I have tuned about 50Hz What subs or sub will be good for me? I want to do a hair trik , but sub must be in the trunk. Is there posibility to do a hair trik? What sub/s will be the best for this? Now i planing to buy 2x RE SX15D4 or ewentualy 2x FI 15BTL ( they will be much louder then re but I think that to hair trik a RE will be better). What play music nicer RE or FI? Or maybe you advice my another sub/s?