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Old 03-28-2005, 12:37 AM   #1
dillaheys
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Default Pick up truck sub enclosure?

I have been thinking about this for some time. i want to go for a a bit sleeker look in my trunk. I currently have a q-logic bandpass that houses my two 10 inch MTX thunder 6000's that are pushed by a Sony x-plode amp. Needless to say, it has eaten my trunk and I want it back.
I have been thinking about switching to a dual sealed enclosure that is made to fit behind the seats in pick up trucks. They have the same volume that standard car enclosures have, just that they are half as thick, just taller.
Do you think this would work and what would be some drawbacks to it? I would simply fill the sides with carpeted fiber board ot somthing else cheap. It would also hide my rear sway bar.
Would this work?
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Old 03-28-2005, 12:40 AM   #2
svek
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well depending on your sub, the box may be too thin and the sub could hit the back of the box. i had a friend who had this happen to him. the sub would hit the back of the box when it hit. this makes it sound like total ****. what we did was we took a ring of styrofoam and put that over the wood and then bolted the sub into that. basically elevating the sub so it didnt hit the back of the box. this made a HUGE difference. i cant even describe how much better it was.
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Old 03-28-2005, 12:49 AM   #3
dillaheys
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Interesting.....I didn't even think of that as being a problem. Good way to work the problem though! I do worry about the height of the box hitting or interfering with the sway bar.

I assume any box would do.....I even have thought about checking out the Wal-mart offerings since kash is tight.
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Old 03-28-2005, 01:19 AM   #4
Texas25RS
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Consolidate into a single smaller 10" box with a more efficient sub. I use to have a MTX 81244 (8000 series 12" DVC) and it took a 1.5 ft^3 box that took up most of the trunk. I now have a single Infinity Kappa Perfect 10" SVC in a .625 ft^3 box that I am just as pleased with... I got all of my trunk back and ditched the ungodly weight of the big ass box...
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Old 03-28-2005, 01:56 AM   #5
khail19
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Quote:
Originally Posted by svek
the sub would hit the back of the box when it hit. this makes it sound like total ****.
OK, first of all, the back part of the sub (the magnet) never moves. So if the sub clears the back of the box when installing it, it's not going to touch anything when the sub "hits", as you put it. And second, using styrofoam as a spacing ring is a very bad idea. Use wood or MDF or something you can actually not destroy just by pushing on it with your finger.

To the original poster, a truck type box would probably save you some trunk space as long as it clears vertically. Or get one that has an angled back so you can squeeze it against the back seat. It would need to be short enough to fit under the strut brace though. And make sure you have at least a 1/2 inch or so of space between the sub magnet and the back of the box. Not because the sub will move farther back, but because many subs vent hot air through the rear of the magnet. Not having enough space behind the vent can cause your sub to overheat.
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Old 03-28-2005, 02:58 AM   #6
svek
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ok well i didnt mean that the back part of the sub moves. i know it doesnt. but somehow it was hitting the back of the box. i guarantee it. maybe when the sub sucked in air it somehow flexed the front of the box backwards making it tap. it doesnt matter. and about the styrofoam. we wrapped it in duct tape before putting it on. and it works fine. and has worked fine for over 4 months now.
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Old 03-28-2005, 09:23 AM   #7
dillaheys
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Great ideas guys...I think that it will work, and had the same idea about the the angled back part fitting right up to the back of the rear seats. Thanks!
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Old 03-28-2005, 10:21 AM   #8
khail19
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Quote:
Originally Posted by svek
and about the styrofoam. we wrapped it in duct tape before putting it on. and it works fine. and has worked fine for over 4 months now.
Well, I guess anything is an improvement over styrofoam by itself. I'm sure it would sound much better if it was bolted to something more solid.
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Old 03-28-2005, 01:58 PM   #9
braveit1
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It the sub is to close to the rear wall of the box the actual sub doesn't move but the air flowing out of the sub can 'hit' the rear wall with a force that sounds like that. The sub needs enough room behind it so that the air can escape quickly around the rear. Some subs have a small port around the voice coils that the air flows through. This air flow is your 'hitting' noice.
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Old 03-28-2005, 02:02 PM   #10
Pallendo
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If the box is cheaply made then that large flat wall in the back of the box can flex quite a bit during large excursions. If it is flexing far enough, it can hit the back of the magnet if it starts out close enough.

-Peter
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Old 03-28-2005, 03:07 PM   #11
BryanH
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Are you able to make your own box? Its a WHOLE lot cheaper and you can make it as custom as you want so it fits like you want.

If not what is the MAX height you can work with? Browse around and see what fits. Maybe something like
http://www.crutchfield.com/S-O4ZEH2g...0&I=044QLTCS10
would work for you.
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