So I've drawn up this box for 12 10's in 15 cubes/3600W RMS, it's 2" MDF everywhere with a 4" baffle. It needs bracing, 2 45's on the bottom corners (one is a port opening), and one 3 x 3 brace in the middle.
The brace in the middle is 16.5 x 35.5 x 3 x 3, and the hole it isn't obstructing is 10.5 x 29.5 x 3 x 3. Will this act as a port that's connected to the other side of the box? Will it obstruct a lot of air without 45's, maybe round corners? I calculated the tunings if they were to act like ports - around 56.5 and 70.5 Hz depending on if the air-space is calculated as 7.5 or all 15 cubes. Just wondering.
How gradual should a 45 corner be, is going too low not usefull? I was thinking of doing the port corner so that on a 45 degree angle there is still the width of the port at the center line/45 corner (triangle calc says 3.71 x 3.71/port width is 5.25), I did something wrong? What about the other corner though?
i would not bother with that. just get some threaded rod. 1/4 inch threaded rod in the middle and places around inside the box. counter sink you subs if u can! and make sure to flair out the baffle on the inside and out were the subs set.
sounds like it will be a pretty solid box. what kind of subs r u using?
Is 1/4" rod kinda small? There's enough space for two 1" rods from top to bottom (leaves 1" each side from rod to inside magnet cut-out), and two rods from side to side on the farther sides. Hopefully I can counter-sink the nuts so they don't stick out onto the wheel-wells, and the wood covers them all with a nut-shape cut out so they don't move.
haha. You could just drill out the outer 1" to fit your socket and put locktite on the nut. fill in the gap with expanding foam then cover with carpet, vinyl, or if you're a big baller: leather and suede. Incorporate plexiglass in it somehow. And put my name on it.
it was on the fi forum... u r talking about the older Xs that are on sale right>>?
i was talking about them. but hey u could try to buy them.. i am sure they will have the new fi Xs and lots of them.. but not at sale price.. just wait i read last week
iv seen pretty big gains in flaring the baffle if u have low power like you do.. with my set up i gained 1.4 dbs with flaring the baffle and smoothing the inside of the box..
this is the closest pic i could find... http://oak.cats.ohiou.edu/~schneidw/audio/images/north_creek_baffles062vsml.jpg
see how the inside is flared?
let me look for pix of what i did on my wall... i might have pix of a few boxes too... ill have to look
I dunno how I didn't think of this but I've noticed that a thick baffle creates more space. Do I calculate it like diameter/2*itself*pi*baffle thickness below mounting depth/1728 ? That means a 3" baffle creates 1.3992 cubes or .1166 per cut-out. The sub displacement is .1 each so now I don't have to account for 1.2 cubes inside the sealed portion, and it adds .1992 cubes to the space so 15-.1992 = 14.8008 cubes + 1.2 sub disp's = 15.208 NET. I'll shoot for 14.8 cubes. I'm sure those little things could and will throw off the tune by a few Hz.
The port corner brace and the other corner brace are three-sided to half of half of the port width, if it were squared off (5.25/4). I don't know how to calculate a 5-sided "triangle".
I'm looking for six 4-way rod connectors. It can feng shuieieilly fit 11 rods.
Like so, the magnets stick out 3" below the baffle though.
I was originally planning on $100/sub but I wouldn't pass up a 40% sale for the same thing.
I'm going to buy two 10's for my Alero, and test them before I buy 10 more. I'm still looking for a cheap hatch, and I don't know what batt, alt, amp (3600W RMS @ ? ohm probably Sundown/AQ) or speakers (Hertz/CDT/Morel/JBL) to use. 4 6.5" that gets down to 60-80 Hz with two tweeters would be nice. What can 12 DVC 4 and SVC 4 subs wire into?
I'll be fiber-glassing the fronts, black suede everywhere, blue neons hidden on the roof/pointed at the subs so when you look in the window they are all lit up. Below the baffle is all hidden etc.
Someone find me a newish GTI 2-door hatch for cheap.
1200 subs 800 sub amp 500 fronts (4 6.5/2 1) 400 alt 300 deck 300 box, probably way more 300 wires/deadening/other 300 component amp 200 2 batteries (3 total)
$4300 + shipping, probably $4800 total.
Then there's sweet rims, car insurance, and school.
Do you flare both the inside and the outside of the baffle?
Otherwise the baffle hole diameters will be flared between the third & fourth layer, 2" each side. There's a 2" flared slot port, so for aesthetics 2"?
