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First off i am wondering if it is possible. I thought about haveing all 4 face upwards in the trunk either sealed or have one big port towards the trunk. Has anyone sone this this? i think fonto has 4 12"s facing up but i dont's know about the 15's? The second thing i need to know if what amp? i have 2 15" comp vr's in a 6 cube sealed box with a tsunami db1100 amp. my amp just blew, so i am looking for something better. my subs are wired to 1 ohm but can also be wried to 4. they are 4 ohm dvc's. so if i got four that are all 4 ohm dvc's i could wire to 2 ohms or 0.5 ohms. or i could wire each set seperate and get two 1 ohm loads and run two amps? or what if my second set of subs is 2 ohm dvc, so if wired to the 4 ohm dvc, it would be like one 1 ohm load and one 0.5 ohm or 2 ohm load, what would this end up as? what would be my best option? this is a daily driver set-up, but i want it to be decently loud, so whatever amp i get can't just be made for burps. i thought about two tsunami db1100's or a modified mtx 81000d or maybe something like 2 jbl 1200.1's. i was wondering if you could give some imput on this. i was wanting liek 4 alpine typr-r 10's for sq but they just don't hit like 15's , i like the deep bass you can feel. i need some suggestions on amps and on my wiring and 4 15's. i want to spend around 400-500 on the amps.\

thanks,
chris

 
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I think 4 15" is possible if they require a box on the smaller side. You can probably get what you are looking for with 1-3 subs in the proper enclosure, but you will have to do some research and listening at shops.

 
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you don't need 4 15's to feel a lot of bass.... i have 2 10's and had a 1000w amp on them (since sold) and it dished out sickening amounts of bass...

500 could probably get you a nice amp, maybe an orion 2500d? earthquake d3?

check termpro.com classifieds for high powered amps for sale

 
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Wow. To get volumes loud enough to warrant having 4 15"s would most likely destroy your hearing, or at least prevent you from hearing things around you in traffic.

But hey, if you do it, post pics.

 
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this is a setup in an Integra of one of the guys I know:







He has 4 15" Kaption subs with a 1,500+(maybe 2,000?? cant remember) Watt Orion Amp. That thing is ridiculously loud.. I was standing 10 feet away from the car at one of the local competitions, and I could see my clothes move from all that bass.

IMO 4 subs is an overkill. You would be a lot better off with 2 good quality 12" (Phoenix Gold or JL) and a powerful amp.

My .02

 
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That is a sweet amp!! ...man, I can only imagine how loud that car can get.

 
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that integra is pretty sweet

 
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if you think that amp is sweet just wait til you see the Orion I might be getting, it will eat that one for breakfast mwhahahahhahaha

 
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That amp would last about one night around here mounted the way it is....

 
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damn I suprised he hasn't broke the latch yet. And reflecting the the bass off of the glass bumps the sound up another 3 db. That sucha has to loud as ***.

 
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Well I'm sure that isn't the kind of car that spends a lot of time parked outside

 
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if it is then someone has too much money and needs to let me have some

 
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I second that motion

 
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if i do the 4 15's, it will most likely be the kicker comp vr's, since i already have 2. megahurtz, you said you has 2 10's and a 100 watts, i had my 2 15"s with 1100 true rms watts and it was loud, but i want to be able to put everyone elses system to shame at school. since everyone pretty much has audiobahn or xplode, i think the 4 15's will do. i also thought about going to a competition maybe, i think a couple of the shops around here have hosted some. i have been looking at fixing my tsunami db1100 and getting another one since they are strappable, that would give me 2200 watts rms at 2 ohms. you think i would be able to place at comps? also what kind of electrical would i need? i thought about getting a real big battery up front, like a marine deep cycle. what do you all use battery wise, up front? i also thought about a second battery on an isolator, but i heard you have to wait and let it charge, so it isn't good for daily? that integra is sick

 
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fonto, how is your four shiva's? they are 12's right? is it loud and sound good? how much do they go for?

thanks,
chris

 
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chris, if it's all audiobahn and xplode you should be able to destroy them with 2 10's no problem... especially if they are beefy 10's with a lot of power.

 
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4 15s you'll run into problems. I've got 1 18 and i am having problems making it work in my vic. it's hard to get a box big enough to fit and fit correctly. I need at least 5cubic feet and i'm thinking you'll probably need more(didnt look up your specs)

Technically if you have 4 15s in a box too small you could be louder with just 2 15s. Plus you've got to worry about transfer into your cabin from your trunk. Thats my big issue.

What direction would you face your subs. I'd assume all of them would be facing up like in the integra. But that application was fine because it was a hatchback which was open into the cabin. Our cars arent. You'd only have the small area from the top of your box to the interior of the trunk for transfer. Gimme some of your ideas.

You could build a box facing up and make it as low as possible to make a larger area for the sound waves to move into the cabin and maybe also cut out your rear decklid and put up a false deck out of mesh or something to help with transfer.

 
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All in favor of letting me collect some extra money...

 
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nay!

 
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^ I was going to split it 50/50 too

 
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100 (me) / 0 (you) and it's a deal

 
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sounds like a deal

 
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It was ok, but I had them in smallish boxes for a Shiva, so they did not play ultra deep.

Now this was loud and deep...

It is all 4 subs mounted isobarik in a 5 cubic foot box. Mounting subs isobarik basically is the equivelent of running half the power, but twice the box size. man it was deeeeeeep...which is how I like it

 
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i don't really think box size is a problem, i now have a 6 cube box for the two 15's. i currently have the loudest system at school and even though they are comp vr's, one of the best sounding too. some people come close though and i just wanna be able to put other's systems to shame. for amps, i have decided to fix my db1100 and get another one, i can get 2200 rms at 2 ohms, so what two subs could be better with this then the 4 15's. Megahurtz, you say i could destroy them with 2 10's? which ones. i would like the sq and all of tens, but like i said i like the deep bass of 15's. can any 10's or 12's play as deep as 15's? if you think i can do better with some 10'2 or 12's, which ones? around $500, i don't mind buying on ebay, sd, etc. or maybe something used

thanks,
chris

 
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also, how big of difference would porting my 2 15's be?

 
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I had (4) 15's MTX T8's in a wall in my Regal. I hit consistent 150's..........the only downfall was that i only had (1) 1000w amp running all 4 at 1 ohm. If i had more power, that **** would have been sick

 
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i was running 4 S15L7s in my 'Hoe...33 cubic foot ported box, so that's outta the question for the Civic...daily high 150s/low 160s, depending on the meter...currently running a pair of S12L7s and a Kicker KX1200.1 (1410 watts @ 1 ohm), and it's unbelievable...if you just want loud, grab a pair of these subs and a big *** amp (Hifonics BX1500D, KX1200.1 JBL BP1200.1, Fosgate 1500bd, etc), slap 'em in a ported box (mine's sealed, and it is earth-shaking, but you'll get a couple more dB's out of a ported...but you'll lose a bit of SQ), and kick ***...the box below is from ProBox , and it is awesome...anyway, good luck!

 
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i could be done...just have two facing back and two facing sort of up...in a rounded halfpipe type box using the spare tire well as space as well as having it off the trunk floor. then use 15s that dont need alot of space (mb quart pce's come to mind with 1.5 cubes each)

i think it can be done...then put an amp behind each tail light or where the rear seats fold foreward.

 
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Mystic3030 has 4 12's in his and its *somewhat* loud. There's still room in there for 15's if you build it right....

 
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you are gonna find it difficult at best to cram four 15's into just your trunk. the easiest way to do it will be a best case scenario IB design using a W shaped baffle. but IB will kill your SPL capability.

unfortunately rea estate comes at a premium in our trunks, especially if you are looking for a little style or fear a little hand fabrication.

the best way I cna think of would be to have two 15's on each side of the trunk, firing at each other. the rear ones would be normal mount, the far ones would be over the wheel wells, and need ot be invert mounted jsut to fit. the airspace of the enclosure would have to be moulded down into the spare tire well area, or just be REALLY small box woofers! (as in ive never heard of a woofer that small box!)

isobaric is a neat way to do it, and makes it much much mroe feasible. unfortunately, it too kills your volume potential. in fonto's case, he could have duplicated the performance of his FOUR shiva in 5 cubes with jsut TWO shiva in 10 cubes and HALF the power! the peroformance would have been the same.......

all in all, if its style you are looking for, I say go for it, its rewarding! but if you want to be assured of shock value (daaaaaaaaamn man, you got four 15's cant see no wires) combined with ground blasting bass to destroy yoru friends, the BEST was to accomplish that is a super super well installed monster SPL woofer with a ludicrous amount of power. say, a DD 9510 with 2500-5000 rms of power, well installed.

you roll up with the car shut up, and blast the music, making rediculous quantities of sound. then they sak to see your trunk. whats more impressive, opening up and seeing four 15's, or opening up and seeing ONE 10" woofer? ill give you one guess.....

my vote is an uber spl block rocker with an unholy amount of power.

four 15's in a civic is more like one of those ideas that seemed like a good idea at the time, and looks cool, but rarely performs. ask fonto about how crummy the performance of many 15's in a civic can be....