When my friend sells his car, relatively soon, he will sell me his Mmats 15" Sub and MA Audio amp HK1200d. Now the only place i can really see fitting this into my z would be the spare tire slot, how much would it be to put the sub there and leave the carpet surrounding the woofer? and is this even plausible?

im looking to do something exactly like this, with a 15

 

Depth of the speaker will be the only difficult part. I'm running two 12's there. The depth of the magnet forced me to have to make a sub floor in order to make it all level.

I cut the tire anchor bracket out as well.

I may still have the dimensions around here from when I built the box if you'd like them.

 

Deoth of the sub is one issue....volume of the enclosure is another. Its all fine and dandy to make an enclosure (be it fibreglass/wood or all wood) and actually fit the sub in the spare tire well but if its only 2 cubic feet then I doubt that sub will sound any good. That sub will most likely need about 3 cubic feet minimum sealed and 4-5 cubes ported. Both of those could be a bit of a stretch unless you raise that floor pretty high. In my opinion, if it is sound quality you are looking for, do a single 12 or two 10's in a custom designed anclosure off of that amp and it'll sound better most likely. A 15 is just a bit big for the Z to make it sound good or be practical in my opinion.

 

so use a 10 or a 12 with the amp i listed? how much would it cost to make a box that will fit like the one pictured above?

 

With a sub that deep, as many have said before me, you're probably going to have to elevate the floor. Not a big deal, though. I did.

 

Well, I would build a custom box that would fit in that tire well for about $260 US (wood) with a carpeted top panel. If you wanted fibreglass, I would charge you about $550 US with a finished top panel. Not sure what a shop in your area would charge.

If I had that amp (1200 X1 @ 1ohm I am guessing) then I would run a Digital Designs DD3512 D2 and port that box. That thing would hammer hard my friend.