Sub box behind seat - available space?

[ItWillBeSlow]

FirstC10 and 1971Stepside - I have a question for you guys, and anyone else with a similar box.

How did you build your floor for the box? Is it a piece of MDF resting on the rear "ridge" with some feet under it to support at the back? I have aftermarket cab mounts and an extra nut (original nutserts are stripped), so my cab bolts/nut extend above this ridge. This means I may need to raise my floor about 1" to clear the nut. I could double the bottom plate and cut a hole in the bottom one to clear, but wanted to see what you guys have done.

Regarding the clearance for the OE bench I started this thread for, it seems the back of the bench is basically a straight line from the rear seat bolt hole to the rear of the cab where the seat touches. I should have plenty of space with this sub (JL 10 TW1). I'm planning to offset it to the passenger side and use the driver side for storage.. i think.

Pictures probably do more justice than my descriptions! The level is roughly the back of the seat.

[SunSoaked]

Boom

[ItWillBeSlow]

Originally Posted by SunSoaked

Boom

Sweet setup. Is that fiberglass? What year truck?

[SunSoaked]

This setup takes commitment. You have to love high-end audio as much as you love the truck. That said, my 85 K20 is a restomod built to my liking. It's not a numbers matching truck and I'll never sell it.

Single cabs are limited in space, no way around it. Here's where the "blow-thru" design comes in. The sub box is mounted in the bed. You cut out the hole in the cab/bed and seal it with accordion boot. Now you can have all the bass/spl you want.

I've got a 12 inch sub, two Memphis amps (1050 watts rms), capacitor, audio control pre-amp, CD player and 8 component speakers in the doors/dash.

Ya, its pretty impressive. The clarity, power and ground shaking bass will rattle your teeth. I love it, wouldn't have it any other way.

[First c10]

Originally Posted by ItWillBeSlow

FirstC10 and 1971Stepside - I have a question for you guys, and anyone else with a similar box.

How did you build your floor for the box? Is it a piece of MDF resting on the rear "ridge" with some feet under it to support at the back? I have aftermarket cab mounts and an extra nut (original nutserts are stripped), so my cab bolts/nut extend above this ridge. This means I may need to raise my floor about 1" to clear the nut. I could double the bottom plate and cut a hole in the bottom one to clear, but wanted to see what you guys have done.

Regarding the clearance for the OE bench I started this thread for, it seems the back of the bench is basically a straight line from the rear seat bolt hole to the rear of the cab where the seat touches. I should have plenty of space with this sub (JL 10 TW1). I'm planning to offset it to the passenger side and use the driver side for storage.. i think.

Pictures probably do more justice than my descriptions! The level is roughly the back of the seat.

Hey iwbs! I got my cab bolted down and then I cut the remaining thread off. I did use MDF as a filler to get it above the gas tank valley and above the captured nut. You would just have to go a little higher/thicker. But I don’t see a problem with either set up! My seats were custom so I put my seats in and drew a line and that’s what I used as the thickness. That thickness is what I based what speaker I was going to use. Then I made up the correct air space by how wide I made the box.


1971step I like the red

Sunsoaked I remember committed to stereos..... back in the mini truck days cutting the back of the cab and front of the bed and putting a box for 4-12”. 15” etc. lol Looks cool and I bet it sounds good.