RooTxBeeR

Use Torres calc, will work nicely aslong as you put in the right numbers.

Well, I have 4 towers in my room, 2 are Sansui towers with a 15" subwoofer and 3" and 2" mid highs, the others are Kenwood towers containing a 12" subwoofer and 3" mid with old computer speakers as the 1" highs, I wanted to build a new box for the kenwood towers. Anyone have any experience with home theatre box set-ups?

I don't see why it wouldn't have any negative effect on sound or performence that if it where the other way. I will be starting it soon and doing a log of it, Also starting a topic for my car build along with it.

KOOL!!! now I got a design ganna build it asap

The way I am going to design my box, Have the bottom and put sides on, then top, will be easier this way. I just wanted to make sure this was the correct thing when it says port bends.

If the width of my port is 3", when I bend the port for either side, that means it moves down to 1.5" for each side right? Also, with wood thickness taken into account, my side height on the box will be 15.5", same as the inside. So when I bend the port, how far should I put it down until I bend it. I have 24" port length so I was going to put it down 14" then bend it into a 1.5" wide port, with the rest being 10" does this sound correct? And here is a little drawing if my writing is a bit confusing. Uploaded with ImageShack.us

I am sorry for the double post, but I think I FINALLY found the right numbers for everything. This is if I believe that Heigth and width for port is if your looking at the box from the top, and length is how deep the port goes in. Uploaded with ImageShack.us

I actually am wrong, the length on port referes to the length it goes into the box.

No 10" isn't my max, my max height and length(depth) can be 17". Is all the spots where my arrows are pointing the correct spots?

I still have a few questions on the calculator. here is a diagram I put up with arrows points to each picture. I want to know if I am correct on where I put my arrows. Uploaded with ImageShack.us

10" JBL GT1000d

To blazer, here is everything you need to know, The width must be 33" height and depth cannot exceed 17" each. I have a 91 hatchback civic so it can fit through a door if I cannot fit it through the back which I am sure I will be able to. The subs are 1.20 Cu a piece and I have 2, they need to be at 35 Hz. Here is the rest of the info on the subs, straight from the online manual. I will still work on my own design, just so I have more practice with it, when I get your I will take into account anything and everything on yours to make mine the best I can for my setup. DIAMETER: 10" (254.0 MM) SENSITIVITY (2.83 V @ 1 M): 94 dB POWER HANDLING: 260 WRMS FREQUENCY RESPONSE: 30 ~ 3,500 HZ NOMINAL IMPEDANCE: 4 OHMS (PER COIL) VOICE-COIL DIAMETER: 2.0" (50.7 MM) THIELE-SMALL PARAMETERS* VOICE COIL DC RESISTANCE: REVC (OHMS) . . . . . . 1.54 VOICE COIL INDUCTANCE @ 1 KHZ: LEVC (MH). . . . . . . . 1.22 DRIVER RADIATING AREA: SD (IN2) . . . . . . . . 54.78 SD (CM2). . . . . . . 355.00 MOTOR FORCE FACTOR: BL . . . . . . . . . 7.22 COMPLIANCE VOLUME: VAS (FT3). . . . . . . . . 2.63 VAS (LITERS). . . . . . 62.10 SUSPENSION COMPLIANCE: CMS (μM/N) . . . . 443.54 MOVING MASS, AIR LOAD: MMS (GRAMS) . . . . . 74.66 MOVING MASS, DIAPHRAGM: MMD (GRAMS). . . . . 71.46 FREE-AIR RESONANCE: FS (HZ) . . . . . . . . 27.66 MECHANICAL Q: QMS . . . . . . . . . . . 10.98 ELECTRICAL Q: QES . . . . . . . . . . . . 0.38 TOTAL Q: QTS . . . . . . . . . . . . 0.37 MAGNETIC-GAP HEIGHT: HAG (IN) . . . . . . . . . 0.31 HAG (MM) . . . . . . . . 7.92 VOICE-COIL HEIGHT: HVC (IN) . . . . . . . . . 0.88 HVC (MM) . . . . . . . 22.23 MAXIMUM EXCURSION: XMAX (IN) . . . . . . . . 0.28 XMAX (MM). . . . . . . . 7.15

How can I find the volume of my sub? 5.13" depth and 9.25" diameter. I have adjusted the calculator so now its 2.50 net so Hopefully they are .05 a piece lol. (doubt it)

I do not know what you mean by sub volume. I have it now where it says port bends, and I have 35 Hz and within the port area range. Now my question is, it says my net volume is 2.01, my box is supposed to be 2.4 Cu. Will that have any effect? Uploaded with ImageShack.us

It is just hard to use if you don't understand just 1 thing on it. My problem is, I am putting the port directly between my subs, so doing an L line won't work if I'm correct. And adding a 1 piece of wood is very hard for me since this is my first ever box I have designed and really am not understanding a damned thing of it.

Lol no thats just to much for me, I have never designed a single box and now I need to do that, only reason I am using that calculator is because this is my first, and I see nothing on this calculator to help with L ports. Edit: For port walls, I was going to be doing dual sub on same side of the box, with the port in the center, so would that be 2 sides because it touches only the 2 sides of the box? Edit2: ya it did change my net volume, drasticly, this calc sux

I was able to get the Hz at 35 and the port Sqin in the range, but the only problem is that I had to double the length of my port, which is double the actual length of my box.

Well if I change it, then my tuneing changes, and I need to keep the width of the box at 33in and a 35Hz tuning, also need it to stay at 2.4 cu.

Bump

bump, no one has even looked at this yet need help, have made a design based off this already.

I am using the box calc off this site, my subs say on the manual that for 1 sub for ported, it needs 1.20 Cu, with a 8.24 in length port with a diameter of 3 in. I want to keep the 1.2 Cu per sub and I have 2, Which I want to make a box, with 2 seperate ported boxes for each sub. I just am having a hard time using this calculator to figure shit out, I need to keep the width of the box at 33 in and need a 35 Hz port. I would prefer a non circle port, but when I take diameter off the calc and use width height instead it doesn't work. Help would be greatly appreciated. Edit:My main questions on this are these. Box dimensions: Height is the height, width is width, so Depth is the "Length" in the L x W x H = Cu? Port Dimensions: Width and Length are the W x L in the port, and height is how deep it is? This box design I came on with this if I think the calc is what I think everything means, is good, 2.4 Cu 35Hz, everything I need. Another question is, would it be fine to have 2 subs on top the box, with the port in the middle, and they share it? Uploaded with ImageShack.us

I know the Q is made along side of SQ, but can it get some good vibrations?

I do see that is quite expesnive, but it is good money. Well since the prices are chaning up on me, I will not get this just yet but when I do get to getting this car have a system I will definatly hit you up.

4 ohm DVC?

If your saying your getting a 3200 watt amp, I don't know how it is rated but that and a amp to power 2 other sets of components will need atleast 2 batteries. And if you even want to run close to the 1K watts, maybe even lower to around 700+ watts, you need to do the big 3.