Truck Box Need Help

[sean2JL12s 10+ year member]

I AM BUILDING A passthrough in my truck (I HAVE THE BOOT AND A WELDER AND EVERYTHING I NEED TO DO THE JOB CORRECTLY. my question is HOW BIG DO I MAKE THE HOLE....i am going to build a enclosure around my sub box to seal the subs from the outside elements .so how big should my hole be. ihave 2jl w3v2s in a ported box please help

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[tacovic 10+ year member]

what kind of truck

ext cab?

 

[sean2JL12s 10+ year member]

2005 silverado ext cab 2500HD

 

[sean2JL12s 10+ year member]

anyone like to help

 

[azimuth 5,000+ posts]

i'd make the hole around the same size, as the front of the box you'll build.

 

[sean2JL12s 10+ year member]

what about a hole a couple of inches larger than the port on my box i think it could work because the box is going to sit about 10 inches away from the hole in the bed and yes it will be sealed from the airspace in the bed let me know what you think

 

[ahillworks 10+ year member]

I would say Size of the box. You want the sound of the subs and port to come threw. Will sound better that way and you can make it look nice.

 

[mcsoul 10+ year member]

Please read:

http://www.caraudio.com/forum/showthread.php?t=351706&highlight=blowthrough

 

[azimuth 5,000+ posts]

you also will probably want to deaden the crap out of the box of the truck. unless you seal the subs off from the rear. tonneau cover or topper?

 

[Supergumby5000 5,000+ posts]

a blowthrough for two w3s?

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[sean2JL12s 10+ year member]

yes two w3s i love me some jl i do have a tonenu cover on bed it is fiberglass one but i still plan on sealing the box from the bed and vent into cab after all it"s only getting 500 watts. im not running 4 12 with 4 1000 watt amps it's just 2 12s with a 500/1i was going for a space saver so people can sit in the truck because right now it's only a 3 seater and it can fit six people so you say the same size as the box but am i wrong or dosen't all of the air flow come from the port in a ported box

 

[azimuth 5,000+ posts]

why not design a downfired, false floor design. or get you an 8w7 in a small ported box. cutting a blowthrough for your system doesn't make much sense to me. many other options, especially if you aren't competing.

 

[sean2JL12s 10+ year member]

i may be changing my set up i want four 12s that can handel 1000 watts each any ideas i will be running a pair of hifonics collsass spelling ***** sorry and i have my diminsion for blow through