Originally Posted by JerryK (Post 63325)

I'm upgrading my stock system with 6.5 components, amp and a subwoofer. I figure 8" is plenty for this car and for my music preference. I wanted to keep the spare tire, so I looked for a sub with minimum box volume requirements. The 8" JL W6 only needs .375 cubic feet, so I fashioned a round box that fits down in the spare tire. It's 15" in diameter by 4.5" or so tall. I used a round tub I found at Lowes for a vessel to set dimensions for the fiberglass sides, the top and bottom are 5/8" MDF. I used epoxy resin with toe thicknesses of mat and cloth. Epoxy resin is expensive, but it's strong and doesn't have that resin smell of the others. The carpet can go over the top, but I may cut it out and put a grill on it. Still working on the rest, hopefully it will be installed in two weeks.

Originally Posted by JerryK (Post 63325)

I'm upgrading my stock system with 6.5 components, amp and a subwoofer. I figure 8" is plenty for this car and my music preference. I wanted to keep the spare tire, so I looked for a sub with minimum box volume requirements. The 8" JL W6 only needs .375 cubic feet, so I fashioned a round box that fits down in the spare tire. It's 15" in diameter by 4.5" or so tall. I used a round tub I found at Lowes for a vessel to set dimensions for the fiberglass sides, the top and bottom are 5/8" MDF. I used epoxy resin with two thicknesses of mat and cloth. Epoxy resin is expensive, but it's strong and doesn't have that resin smell of the others. The carpet can go over the top, but I may cut it out and put a grill on it. Still working on the rest, hopefully it will be installed in two weeks.

Originally Posted by Jeff Smith (Post 63384)

Nice idea. But since the JL sub is no longer being made I'd recommend either the Pioneer or Kenwood shallow 8' sub. I'd like to try this

Originally Posted by Jeff Smith (Post 63397)

I love the JL flat sub but there isnt enough air space for it to fit into the spare tire and sound it's best. Thats all.

Originally Posted by JerryK (Post 63405)

SoCal-- I considered using the spare threaded hold-down to fasten the box, but then I'd have to unscrew the subwoofer to get to the hold-down to remove the spare tire. I plan on hooking the box to the rear sheet metal so it doesn't come flying in an accident.

JL has other 8" subs (as do others) if you can't get the cubic space you need for a flat 10 or 12" version. I believe the flats require more power, also.

Originally Posted by JerryK (Post 63417)

You could spin it, as long as you could disconnect the wiring.

Originally Posted by antennahead (Post 63403)

Thanks for the advice. Looks like the Pioneer would be a good choice.
The 10" states it can work in a .35 sealed box.

John

Originally Posted by Jeff Smith (Post 63701)

Ok your correct that the pioneer specs say that it will wk in .35-.7 cu ft of air space but that's only after you take out for .06 for the woofers displacement inside the box. Which means you need at least .41 before you put the sub in. I sell and install these subs at work and the best box for the 10" is .66 which is what pioneer recommends. In the .35 box it's we call high bass. It makes a sound like boink (85hz) peak instead of boom (50hz peak) in a car. The older JL 8W6 is a waaaay more forgiving sub that the pioneer in smaller boxes.

Originally Posted by antennahead (Post 63704)

Recommendations for a fit in a spare tire custom box?

John

Originally Posted by Jeff Smith (Post 63708)

I'd have to measure is properly first. If I can get SR2449 to bring me his spare I can wk on this in my "SPARE" time lol! :happydance: