Has anyone installed a pre-manufactured sub box under the back seat in a Crew Cab? What mfg. did you choose? Is the sound quality at least OK? The box out of my 2002 Ext. cab is way to tall.

I put a set of 10" MTX subs BEHIND the seat in my crew cab. They work great. you can get them at crutchfield.com
http://www.crutchfield.com/S-5GidUceHMvK/cgi-bin/ProdGroup.asp?g=530&avf=Y

http://www.subthump.com/

You will lose your fold down function with an "under the seat" box. That's why I too went behind the seat with two 10".

Look at this thread on what I installed... http://dieselplace.com/forum/showthread.php?t=57813

Subthump worked great for me. Pretty damn loud. Allthough I do have 900 watts at 1ohm.

I also have 2 10" behind the seat, picked up my box at Circut City for around 100 bucks... under the seat is where the amps, CD Changer, and Electronic Crossovers, go :) . Just be sure when you are sub shopping that you get the type designed for the shallow box, I have Kicker Pro Comps, they work great.

i built my own boxes out of 5/8 particle board and 23/32 plywood. and put 2 12" mtx thunder 6,000's in them under each rear seat with a kenwood 600 watt amp. i can take pics if anyone wants to see them. i just did it 3-4 weeks ago and i havent covered them with fabric yet.

B-rad
We all like pics

here you go

Not bad, I would strongly reccomend MDF for future boxes though.

yeah i just hated to go buy a sheet when i got 20+ leftover sheets of plywood from jobs in my shed.