i'll be doing 2 fiberglass boxes to go under my momo's once i get the secondbracket finished. will house a 10" on each side, firing up into the seat bottom.. i'm toying with the idea of creating little caves for passenger feet in the back we'll see. i'll try and post pictures..

that's one heavy box man! you should look into fiberglass

 

grnxb,

If I had a cad program I'd make some drawings up. I started to yesterday, but it was taking too long on paper.

civiceater,

If'n I knew how to fiber glass in such a situation, I would have. Now that I have a box done maybe I could make a mold

 

make a mold of the floor/carpet and sides simply by laying down some plastic over the floor area (basically building a "tub" out of the area). they lay in a resin/hardener soaked sheet of felt (cover everything you'd be worried about getting resin on) into the "bowl" and massage it into the corners, etc. once you have the felt in place (felt from a fabric store.. basically thick flannel), LATHER it in FG resin and lay down some fiberglass blanket, making sure it gets well soaked and covered in resin.. let dry. it will get very hot.

let this dry/cool for maybe 45 mins before pulling out of the floor. if you have longer, take longer.. you can't rush fiberglass or you'll get some warped crap..

at this point, you can decide how you want your sub to sit. once you figure out where you want your sub, cut a ring out of MDF and position it how you would like it to sit in the top of the box. then use a small brad nailer and sticks of wood to get the ring in place.

once the ring is in place, you can now stretch some more felt over the ring, superglueing it heavily in place to the ring. then stretch the felt back to the edges of your current fiberglass lower half, superglueing it over the edges of the bottom half at least 1" (maybe more if you have room) once you have this felt stretched tight, and exactly where you want it (no wrinkles, etc) start painting on the resin/hardener THICK. add small fiberglass blanket scraps to areas in need of extra strength. you will want to do a few coats of resin to the entire box at this point.

you can then cut out the hole for the sub (just felt/a bit of resin) and your MDF ring is ready and waiting underneath, bonded to the fiberglass/resin.

to ensure a 100 percent seal, mix up a batch of watery resin/hardener with VERY FINE sawdust (possibly out of your sander) and basically "shake" it inside the enclosure. let it fill every small gap inside.

your final product will need to be sanded/bondoed before carpetting or painting.. i suggest carpet for your first box, as it's a lot easier to hide small flaws

dammit, i wish i could just show you..

i'm not even an expert. i am basically repeating what i learned from a friend.

 

i want one...yei yeii

 

My box under my seat holds a 10.

 

out of curiosity, what 10" do you have in there? i had to do a bit of searching to find a low-depth 10..

 

a Bazooka DVC actually. I dont know the model number off of the top of my head but its a little over 2 years old. I had it laying around in my closet so I decided to put it to good use. I think the model was like RSW1024DVC or something like that. Bazooka ended up discontinuing them and then came out with those "Master P" subs in their place which were made crappier...

 

blaupunkt make a shallow 10 too, I think.

re the fiber glass... I could do that, but what I couldn't figure out is how to get it all up in the parts of the seat without building an MDF shell first, abd by then it's as heavy. You know what I mean? Like, if I could have blown up a balloon and filled up all the nooks and crannies up under and around the seat..

 

build like a "cage" around the area you want to mold.. then you can break the cage off once the fiberglass is set, and you'll have smooth sides!

 

i'm running 2 xTANT 10's.. they're very shallow, i think 5.25 inches..

 

here is a picture of my sub thats in the gallery.



Yes, Blaupunkt does make shallow 10s. I had one in the floor of my old CRX. It pounded nicely.

My sub is 4 3/4" deep....

 

I have an Arc Audio 10 inch woofer under each of my seats.

 

i've got re-10's under the seats, just not enough airspace given my basic box design. (about 4 5/8 mounting depth)

 

well. I hooked it all up.


OMFG, I can't believe how good it sounds for 1 8" sub. I'm not one for low expectations and this exceeded mine. At first I was worried, then I figured out how to turn on the Low Pass Filter on the head unit. Nice clean sound. No noise and hits the beats HARD and even pushes the low booms pretty well. The woofer is new, so I haven't really pushed it.

sweeet.

I have a feeling I'll have my other audiobahn up for sale soon.. seems like one is plenty

 

awesome man. Having that woofer fire to the rear helps alot to keep the bass non directional.

 

hey, I know how to figure volume of a regular square or rectangle. I'm going to try to build a box similar to yours (superjeer) and I divided up my proposed box into five seperate compartments as they would each be seperate sizes (just for calculating) but can't figure out how to accurately get the volume. Like, how did you determine the internal volume of the very top piece?

For instance- One part of the box will be say : 9 X 2.5 X 5. For 5/8 mdf it would work out to= .021 cu ft. since it won't be enclosed on one side(as it will be part of the whole box) - how do you really figure out the volume? Would you calculate how much space one portion of the mdf is and add that back in?

I know I'm not figuring it correctly because your box is .75 cu ft and I will try to make mine bigger and I'm coming up with less volume, and I'm using 5/8 not 3/4...

Anybody know?

 

Try to divide it up into pieces, so like with my box I have 3 cubes that are easy to figure and then three triagles (which are just cubes that have been cut in half). I do inside dimentions so that I don't have to subtract anything and then do some estimating cause I'm lazy like that. The actual volume might be .7, not .75. Heck, I might have made a big mistake in adding it up. But, you should know that I removed brakets and carpet to maximiz space. Overall it's (outside measurements) like 8.25 tall, 16.5 deep and 14.5 wide.. So, that would be 6.75*15*13 = 1316.25/1728 = minus the cut outs. So, that's .76 minus cut outs. I might even be in the .65 range all said and done! I'll measure it all up tonight as I carpet it.

 

another easy way to measure airspace..

use small styrofoam pellets to fill the box up.. then dump them into a 1X1' box or bucket..

 

^^^ If I had them and a 1x1 box, that's how I'd have done it!!

 

Superjeer, if you think of it, please post the interior volume. Worst case scenario, I'll just build the box as big as possible, take interior dimensions to figure volume before putting top on, and I'll just add some extra bracing if there's too much room. My sub needs .83 cuft sealed...so I'll see what I get. Either way, the current box is only about .55 cuft sealed with a healthy amount of polyfill- so it's definately undersized.