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Old 08-26-2007, 09:43 PM   #1
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Subwoofer placement????

Has anyone had any luck putting subwoofers in their Jeep? Is there any way to put one underneath the back seat or what is the easiest, safest place to put a subwoofer??

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Old 08-26-2007, 10:48 PM   #2
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Here is my 12" kicker. I'd recomend getting a 10" though since i needed to relocate the seat forward a bit to make it fit.




Here is my amp.. bolted on to the tub.




The hole i made for the + wire.. thats the passenger feet area.



When the seat is installed you dont see anything.

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Old 08-27-2007, 11:59 AM   #3
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downfiring is the best subwoofer direction in a jeep.

the two best systems/installs out there are these two....

just4effect.com - http://just4effect.com/purchase.htm
you can get single or dual 8", 10", or 12". looks like an "instatrunk" looking down on it.



SirGCal's design - http://www.sirgcal.com/
can fit up to three 6", up to two 8", or two shallow 10". completely hidden in the seat. some seat foam is removed, but is still fully functional.

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Old 08-27-2007, 12:33 PM   #4
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i went with a q-logic box. i have removed my rear seat and put the sub facing the back of the driver's seat. before that i had it behind the rear seat, the seat muffled the sound a little.
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Old 08-27-2007, 12:54 PM   #5
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Too bad I have no way of making that in seat box.. that looks like the ticket.
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Old 08-27-2007, 01:01 PM   #6
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I really want to do the in the seat sub but I'm just worried I'll screw it up
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Old 08-27-2007, 05:08 PM   #7
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go to sir-g-cal's website i downloaded the plans and built the box its the first cut that hurts most after that: no problem!!
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Old 08-27-2007, 10:53 PM   #8
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if i were you id do the seat idea or just get a couple 8's or just one. 8's sound great and get plenty loud with the right enclosure. my 2 8's were louder than my friends 12's. and set off a car alarm once.

check out reaudio.com or soundsplinter.com
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Old 08-27-2007, 11:48 PM   #9
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how does the rear seat feel once you have done this? is it noticeably stiffer or uncomfortable?
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Old 08-28-2007, 12:18 AM   #10
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I'm just curious why is the down firing sub best? I'd imagine the sub would be rattling the entire body. I get enough flexing in my pedals and steering wheel now.. don't want to imagine a down firing system.
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Old 08-28-2007, 11:24 AM   #11
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What kind of subs are you guys putting in the back seat? Do I need to buy shallow mount subs or will reg. subs work? I would really like 2 10 inch JL audios but I do not think that they come in shallow mount. I know Pioneer recently came out with a shallow mount that is supposed to be pretty decent. Does your single 10/12 inch sub sound good, does it bang loud?
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Old 08-28-2007, 11:43 AM   #12
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Quote:
Originally Posted by Triple88a View Post
I'm just curious why is the down firing sub best? I'd imagine the sub would be rattling the entire body. I get enough flexing in my pedals and steering wheel now.. don't want to imagine a down firing system.
in a jeep with the top down, a downfiring design will hold the waves in the jeep longer and allow them to travel farther inside the jeep before escaping out the top.
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Old 08-28-2007, 12:01 PM   #13
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if your TJ is a 97-02, the max mounting depth is 5". for an 03-06, the max depth is like 3.75" or less.
as an example, the shallow mount pioneer has a 3" mounting depth.
as another example, the JL 10w1v2 has a 4.34" mounting depth. so that sub would work fine in a 97-02 in-seat enclosure. if you ran two of them, you might need to stuff the enclosure with some polyfill to trick the sub to think the box is bigger.
a JL 10w3v2 or 10w3v3 will not fit. their 8" versions would fit though.
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Old 08-28-2007, 12:44 PM   #14
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Quote:
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I'm just curious why is the down firing sub best? I'd imagine the sub would be rattling the entire body. I get enough flexing in my pedals and steering wheel now.. don't want to imagine a down firing system.
Sounds like another physics question: The answer is Resonance.

If you direct the low frequency sound in a subwoofer downwards, you maximize your resonance factor..... (the ability to vibrate), The entire Jeep will assume mutual resonance and act like one giant speaker as opposed to a 10" speaker.
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Old 08-28-2007, 04:24 PM   #15
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but only use polyfill in a ported box and if you were doin the seat idea it would most likely be sealed.
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Old 08-28-2007, 04:38 PM   #16
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i have found that having a down firing woofer just ends up muffling the sound. you are right on the resonance, but my sub sounds better and louder when facing the back of my seat.
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Old 08-28-2007, 04:44 PM   #17
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To Hemmer's point, you need to build the right box and the right mounting to get the desired effect. Is your desired effect to "shake" the neighborhood or do you just want to blow out the windows and your eardrums in your Jeep?
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Old 08-28-2007, 05:42 PM   #18
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polyfill can be used in sealed enclosures the same as ported. the in-seat enclosure is quite small in the air space category so if you are trying to run two 10" subs, you will likey need more air space than the enclosure allows; thus, you can use polyfill to help.
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Old 08-28-2007, 07:11 PM   #19
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Old 08-29-2007, 01:42 PM   #20
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ya you can use it in sealed. but it makes your voice coils heat up more quickly. polyfill changes the thermal energy basically. if you were to go sealed put like half a pound per foot^3 but no more than that.
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Old 08-29-2007, 04:21 PM   #21
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for a small sealed box you shouldn't need any fill. but for larger ones i recommend using it.
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Old 08-31-2007, 06:14 PM   #22
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wouldnt the poly fill make the small box act larger?

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