in an 02 nissan maxima. any help would be appreciated.

 

max dimensions?
how much power going to the woofers?
music you listen to?
your goals with the enclosure? (SQ, SQL, SPL)

 

lol I sound like such an idiot, but no idea. really bassy stuff, so rap, techno. and whichever gives me more bass.

 

i'm really just looking for general info and maybe some optimum enclosure guidelines. any help is greatly appreciated.

 

Sealed box, 16.5"h x 30"w x 16.5"d with 1" spacing (if overall diameter is 12.5") and wood - 0.388 total for displacement is 1.5095 cubic feet each. I've heard two X 12's in an alpine box which is around 40hz powered by a kicker 2400 and it moved a lot of air in a cavy trunk, it had no SQ though. I heard one 12 in the same box in a single cab truck upfiring and it was horrible it wasn't loud or low or anything. I think you should see if your trunk opening can fit 16.5 x 30 and put a piece in sealing the subs off from the trunk leaving an inch or two to put the seat up. If you're using a ported box try a 2" port and use 33"w. I don't know if you can do a 2" port though it sounds too small. Does anyone know if you can just use more vent? Have it fireing into the car and tune at 35hz.

 

I plan on having it firing to the rear since when I had one sub in a sealed box it sounded amazing for 1 sub. how would I tune it?? or does that enclosure design tune it?

 

Generally a sealed box with 1.5 cf3 each will make the woofer loudest around 30hz, 35hz at 1 cf3. For a ported box, you need so-many square inches of port area that is so-many inches long, for two 12's, 72-80sq.in with a port that is 20" long. You will almost always have to bend the port. I don't know if you can half the sq.in and make it 40" long, isn't that the same thing, or does there need to be so-much air moving at one time and it can only travel 20"?