So here is my idea, alow me to explaine, First I have t-tops and want to keep my baf, So the box must be in the well and down lower than the bag mounts. Second, I need a spot for 1 sub and 2 amps. (1 amp for sub other for 6x9's), and lastly I need it to be consealed (sp?) So here is what i came up with, The box will go in the well, Half of the box is for the sub the other half for the amps. The 2 amps will be mounted in a V shape (see side view). And lastly A flat bord will cover all of it (not shown in 3D drawing) to conseal it. The flat boud will be as tall as the t-top bag mounts will alow. I have done this flat board on top design before and Havent had any sound problems. (using the same sub and amp)

Components:
HU, Rocford 9300 mps deck
Sub, Rockford 12" XLC
6x9, Infinity KAppa
Sub Amp, Rockford 500
6x9 Amp, Rockford 250

Let me know what you think.

 

Looks Like it could work to me....

 

if you are only using the bottom half of the well, you wont have enough room. my box fits in the bottom half, and it takes up the entire place down there. however, if you are gonna build it higher, it should be possible. remember, you'll need around 1.0 cu ft for most 12" subs. so for your plan, which does look like a good idea, you will have to build it up to fill most of the well. however, you should still have enough room to fit the t-top bag. the shape of the box does not matter for the sub, so that should help you out a bit.

 

Ya, I havent got around to doing messurements yet for the box volume. Do you have 1 or 2 subs in the well??

 

If you had the room I think that would be a great idea. I'd be curious to see what kind of space there actually is once you got all that stuff down there.

 

Ok plan B, the hole well for the sub box, than one amp on each side of the sub, with the board on top to enclose it all. Not as cool as the 2 amps in the V shape, but if it might have to do.

 

I think if you fiberglassed the well, and then did maybe 3/4" up above that, you'd have enough airspace. Just using a 12" Alpine type R for reference, you're looking at .7-1 cu. ft. for a sealed enclosure. I think most people get about 1 cu. ft. when the fiberglass the well, so minus the space the amps take up (you should still have some usuable airspace beneath the "v", and adding 3/4" in height to it, I think you'd have just enough space. I too really like the idea of having the amps sunk in in a V. The only thing I'd look out for is that you have enough space for both the amps and sub to fit into the well, cause it's not as wide on the passenger side.

 

Ya I'm prob going to go with the 2nd pic, and but the amps on top of the box instead of it it. And keep that space foe the sub.

 

yep id go with the second pic for sure!!!! with that much room for the sub you could use a 12 or 15" sub.

 

i think plan a is good but what if you want to run more than one sub? would you just go like always and store your amp in the spare tire compartment or do you have any ideas of dual subs and amps built in?

 

I have had 2 subs before. (2 12" rockford XLC's off of a rockford amp 500), but this winter when I had my truck I only had room for one sub off of the 500 and it sounded nice, So I'm going to stick with that set up for now. If I dont like it I"ll just make another box. This will be my 4th box, so it not a problem to make another one.

 

well if you make another box for 2 12's let me know i wanna build something like that so i still have a space to store my t-tops. PM the plans if you draw some up.

 

Are you still going to store the tops in the bag

 

i can i mean what ever is easier to build it doesn't matter.

 

Well my goal is to make a box for the rear well, and still be low enough so i can strap in the t-top bag.

 

well i don't know if i have the mounts that go one the flat spot in the hatch anymore to secure the bag but it doesn't matter to me as long as the box design goes all the way down in the hatch not just cut off half way because with my plans i'm gonna need air space and the box that i got now isn't giving me enough. i need a deep box but i'm too lazy to draw one up and i'm not sure on specific measurments either so when ever you get the chance or idea to draw something up like we've been talking about let me know.

 

I have, some plans saved on my other computer that were posted a while ago. I'll put them up for you when I get on that computer.

 

alright thanks man because my setup now worries me only because you can see the amp from everywhere and it's to big to sqeeze into any other place you can post em or PM them to me what ever you wanna do which ever is easier.

 

Hay i forgot to put those up. I'll do it tonight.

-JAWZ

 

what should i make it out of 3/4 MDF or what?

 

Ya thats what I use on all my boxes, Then I glue it together with liquid nails, and screw it all tightly together. Than carpet.

 

i like the plan b, basically what i have. however, mine's slightly different. i only have one amp, but its a monster, so it is about half the length of the box. also, i had to move my 12" type-r to the edge of well, due to needing a lot of room to mount it (the hatch pull down bump would have been in the way of the sub i think). i'm in the process of ordering my amp(s) for my component set up front, so plans will change for me. no room for both amps and a sub in that well. also, be careful with plan b, you dont want a board over the sub/amps. it'll will mess with the sub. it would now be acting like its in an odd bandpass box, and that would be a bad idea (because i'm guessing you're goin for a sealed setup; different box specs). here's a pic of what i've got now. what i may end up doing is building up the entire back area. that way the amps are enclosed and it will all look stock. the stock t-top bag hooks near the rear seats would mount on the top of the amp enclosure. think a "false floor" for the entire carpeted hatch area built up about 3-5" with a cover for the well (cause the stock ones are impossible to find and expensive when you do. that way amps and sub is covered and nobody would be the wiser. and i could use the stock t-top bag (the straps are long enough to use).

 

I'm not worried about "boarding" up the sub. The top of the sub wont be enclosed. The top board will be supported on the sides, but open on the fron tand back. I had this same set up on another box I made and it sounded fine. Haveing borad on top of everything will work for me.

 

i just wasnt sure if you were sealing up the amp "rack". yeah, everything should be fine. go for it

 

Is you box a box, you is it just a board with a speaker in it. If it is a box, did you have any problems getting it into the well. My box will be just like yours, but with the fat board covering it all.

 

eeek, no board, no board!!!! hehe, now that i've got that out of my system, yes, its a box. had no probs getting it in and out of the well. thats why i have the sub over to the side instead of centered. makes life easier.

 

Here are those box plans, I didnt make the plans or the box so I cant answer any questions, sorry.

 

i've seen those plans before my only question with that box is how much air space does it have and where the hell do you put the amp?

 

Thats why I'm only doing 1 sub, that way my amp will fit on top of the box.

 

Ok, here's an idea. Take my box. Make it just like I did. But with one difference...only make the box half way across. But make the back of the box the full length of the well, and mount your amps next to the sub in the v fashion. The box I have now is over 2 cu. ft. so you shouldnt have any problems w/ airspace. and if you leave the same size as well, then it will cover your amps and sub, and when you carpet it it will look like your trunk extends to the back. Let me post a couple pics...maybe someone can make one of those fancy 3D pictures to explain what I mean...Im not very good at explaining things w/ words.

my box:

 

Do you have a 10" or a 12" , that box might work do you have dementions for it?

 

i like the style of your box but i want something that fit's 2 12's and my amp...

 

I have one 12", There is no divider in it, it will fit 2 12"s the way it is now w/ the amp mounted on top or under the top on the larger ledge (on the pass side I believe) The dimentions are on my cardomain site in my sig under the stereo page (page 4 I think)

 

it may fit 2 12's, but there is nowhere near enough airspace in there for more than one. not good idea.... maybe a couple 10s

 

It is 2.xx cubic feet, which is plenty for 2 12" Type-R's I didn't think it was that big, but it is. i worked the math 6 times and had the math teacher do it once, and we came up w/ the same answer. Can't remember exactly what it was, but it was over 2 cu ft.

 

but are you counting the space taken up by the driver? 2.0 - each driver = not enough space for 2 12" subs were you measuring outer dimensions? gotta take into account the thickness of the mdf too. just something to think about

 

Um, maybe I'm looking at it wrong (and please correct me if I am), but it looks like you have a box that's approximately 28*8*13.5 exterior dimensions. That comes out to 3024 cu. in. (keep in mind this is exterior dimensions. If the enclosure is built out of 3/4" material, you'll need to remove 1.5" from each dimension.) That's only 1.75 cu. ft. Then you have a 13 degree cut off one edge. I dunno, this is based off the sketch you had at the bottom of page 4 of your website. Some of the measurements were different for the same part in different elevations, some maybe the numbers I was looking at were wrong. But I'd say the box is maybe 1.5 cu. ft.

 

my only question is if i mount the amp on the underside of the box won't it overheat? keep the idea's coming guys i need as much input as i can get.

 

Maybe you guys are right, Im not a math wiz by any means...I used the equation on installer.com and I got 2 sumthing...I'll re-try it when I get back to school. As for the amp overheating, put a couple computer fans down there and you should be fine I would think.

 

Are you going to mount them right side up or upsidedown. The book with my rockford amps, said do not mount up side down. It might be okay with fans. I dont know.

 

Here's the deal. What causes the amps to heat up is power running through the transistors. The more power you run, the hotter it gets. That's why amps that are 2 and 1 ohm stable have bigger heat sinks, because their transistors move more power than the 4 ohm ones. Amps overheat usually for 1 of 2 reasons. 1. They try to flow too much power for too long (i.e. running an amp at 2 or 1 ohm for six hours at max volume). 2. The heat cannot disipate enough from the heat sinks. That is why many amp manufacturers recommend that you not mount the amp upside down because the heat sinks heat up the air around it, and then that hot air rises and surrounds the amp. So the heat the amp is generating isn't going anywhere and the amp overheats. As someone suggested you can use fans to get sufficent air movement, but it isn't always necessary. You need to have air be able to exchange from where the amp is to the outside. If you put your amp in the very bottom of the well and then put a box on top of it then the air around the amp can't get out and you'll overheat all day long. So as long as the air can get out, you can make it work. Another thing to consider is that they make fans that mount on top of the amp to blow cool air on it. So you could use that and mount the amp somewhere out of site.

 

okay but i still want ideas on different styles of custom boxes.. i really don't like the one i have right now from ok-audio it doesn't have enough air space and my amp is plane in sight.

 

This is the box in my brother's car. I don't remember the exact airspace right off hand but it's between 1.5-2 cu. ft. We mounted his amp in between the speakers, but there was enough room to mount it vertically on the side of the box next to the hatch release. Then the top plate extends over most of the area, concealing the amp, but leaving enough open space to let the amp cool.

 

This a nice box. Too bad it wont work if you have a t-top bag

 

I thought the t-tops got strapped above the gas tank. His box is just in the well area. It's flush with the top of the hatch pulldown and then extends to just slightly under the top of the gas tank hump. I don't know if you can really see it in the pic but the top baffle extends like 2 1/2" inches beyond the box. I extended it cause my brother was afraid stuff was gonna fall down between the box and the gas tank cause he still uses the area behind the seats as trunk space.

 

Here, this shows it a little better.

 

Ya the bag attacket to the top of the gas tank, but it also straps on the rear panlel also. there are 2 hooks about 5 inches below the glass. Here is a small pic

 

O.k., I see what you're saying. I was going off of this picture, and after I looked at it again it looks like the bag is empty and he has it folded in half.
<img src="http://images.cardomain.com/member_img_a/186000-186999/186985_181.jpg">

 

that's a nice box.... hey joe who's car is that? i'd put something over those subs if i'm going to have the strap over them like that...

 

It's jcurrieirocz (sp?). He just posted it like a week or two ago.
http://www.cardomain.com/id/jcurrieirocz