subs under back seat??? anybody?

[ffr66cobra]

Well, i started my stereo install yesterday.. kenwood ddx7500, 3 jbl amps, 2 sets of component polks, kenwood music keg, and two 12" polk momo subs. Took the back seat out to run all my wiring to the trunk, and today a thought just popped into my head. After removing the back seat, i noticed all the foam under the seat that actually sits down into the seat wells. Question is.. Has anybody ever removed most of the foam, sealled off the bottoms of the seat wells, and installed subs under the back seat??? The subs only require .88cu ft. of box volume each. i would plan on welding a verticle piece to separate each sides enclosure. Any thoughts?? thanks!- mike

 

[1992 2.3LX]

i have thought about the same thing. but here are the problems i thought about.
you remove that foam and put subs in there nothing over 10 pouds could sit on the seat in fear of damaging the subs. then you would have to dynamat that area to death due to road noise.

though they have this now which might work but how much they actually put out i am not sure.
http://www.crutchfield.com/S-imiJGNu6PB6/cgi-bin/ProdView.asp?wm=fp&I=020SRV303&g=51000

also i have a vert not sure if that makes a difference but there is no way a 12" sub would fit under there in my car.

 

[ffr66cobra]

i definitely knew i'd have to dynomat.. no if ands or buts about that. As far as the weight issue, i also know that if i don't wanted dented grills, or destroyed subs, i would definitely have to fabricate and weld some flat stock steel, with maybe a small plate under the center of each seat bottom. As far as the space for the 12's goes.. Well, i'm just guessing here cause i don't have my car right now. It's at my buddies steel shop w/ no front seats, no rear seat, and no rear deck (but lots and lots of wires everywhere)

Here is a pic i found online or a cobra-r with the back seat removed. I think i can get .88cu ft. on each side???? Knowing that one cubic foot = 7.5 gallons... we're probably going to dynomat, and dump 7.5 gallons of sand in there, and see what we got (he better have a real nice shop-vac!!)

 

[1992 2.3LX]

well if you use the steel plate at least you are driving and own't have to sit back there.
if you figure something out keep me posted. i like doing custom stuff that not many people do. like now i am in search of a clock pod so that i can turn it into my XM satelite radio housing one way or another.

 

[ffr66cobra]

Well, i'm not going to remove ALL the foam. I'll try to keep maybe 1/2" or so out of respect for passengers that can actually FIT in the back seat as is. Actually, i'm only planning on removing the section of foam that actually sits "down" into the well... i don't think that section of foam has as much to do with "comfort" as it does to do w/ sound deadening and support. The metal plate with be the support, but there should hopefully still be enough foam for comfort. I'll keep you posted, and i'll be sure to take pics of the install if i decide to give it a go. - Mike

 

[Jones331]

If you look at the underside (foam) of the bottom seat really closely you will notice that they are two diffrent depths. One side has less foam then the other,this traslates into the shape of the floorboard which is also two diffrent heights on either side..............jj

 

[MyEarsHurt]

No, the only way you could really do it is with a rear seat delete, and then mount the subs right on the rear seat delete, pointing straight up. I thought about that one for a while, but the thought of someone yankin my **** made me change my mind on that idea.