Got an 1990 f-150 extended cab with rear seats. Want to put a subwoofer under the rear seats but not sure what will fit. Anyone know if later models have same space back there (or tried extenders that raise the seat height). Ideally i'd like to try to fit an Infinity Basslink sub. I know JL audio and Q Logics make boxes that fit new cabs. thanks guys

 

There is a 4" lift kit for the older ext cabs. it lifts the rear seat to the postion that my 96 rear seat is in. I put one one a 91 F250 and it only took about an hour. I think I got it Pep boys but can't remember. That extra 4" should be enough for a sub.

 

Atnarg, I also has the same problem when I started to plan my layout. What the company that did the install recommended was that they install the amp under the rear seat in the center to give the greatest clearance for the largest amp. They said that I can put a 10" sub mounted in a box that sits in between the console (between the front seats) and the rear seat. If I remember correctly the box is 11" long X 10" deep (console to rear seat) X 11" high. Just make sure that the legs of the box (bottom) is high enough to allow the sub to move properly. My first time they were to low and the sub was hitting the carpet, so I got them to make another one with higher legs. They match the carpet in the truck, so everything blends in prefectly. You can't see the amp except for a little bit past the box but that is if you are looking from the open doorway.

Have Fun & Keep on Truckin'
Dean

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1994 F-150 XLT Supercab, Long Box, 302 EFI, K&N FIPK, Bosch Platinum +4 Spark Plugs, Automatic, Single Catalytic converter, followed by a Raven Z-55 muffler and finished off with chrome tips (2 1/2" to 3"), Royal Blue in and out, Captain Chairs. Chrome Rims 15x8's, Michelin LTX M/S 105S 235/75R15 (Summer), OEM Aluminum Rims 15x8's, Michelin LTX M/S 108S (Winter), Lightly Tinted, Soft Tonneau Cover, Ford Receiver Hitch Cover & Lock, J&J Enterprises Stainless Steel AirDam with KC driving lights, Lund Supersteps, Lighted Grab Bars, VTech Slotted Taillight Covers, Alpine CDM-7829 Head Unit, PPI 4800 Amplifier, Kicker 10" Solo Baric Sub with Custom Box and Kicker Impulse 6.5 Mid & Tweets.

 

If I ever get to it, I'd place my subwoofers right under the cab. I'd cut a hole into the cab floor and mount the woofers right there. From below I'd have custom boxes welded to the cab - there's lots of room down there anyway without reducing any of your ground clearance.

 

Hey, I have a 99 f-150 extended cab and i put two 8" JL' subs in the JL box. It fits right under the passenger side rear seat, out of site, doesn't affect leg room. The box is very nice and I was very impressed with the sound quality of it. Also I read the MTX has a box that fits in the same place and is for two 10" subs. I would recommend either one, both are quality boxes.