SPL & SQ / Fabrication

Time for a new box and im gonna need alittle help. Not really good at box design so thats where yall come in handy. I have two of the new 15" BTLs and i know the box from my x-cons are holding me back at this point. Im figuring i wanna go with 8-9cuft tuned to 34 or 35hz. Port area is whatever it needs to be for a good mix of daily and spl. Im assuming 100-125 for port area will do the trick. Needless to say if you can design me a box and the cut sheets id much appreciate it.

i have a fi bl 15 dual 2 with flatwind and cooling. it's going in a trailblazer; although i have a lot of room i dont want to use it all. i need some help deciding on the dimensions of my box and how i want it tuned. I want it to sound good but get really loud. i listen to all kinds of music if that matters. any help would be appreciated.

Would it be better to but 45's here or would it be bad? The pics will explain it better. Option A. Option B. There are two, one on each side of the port. The box is 48" wide and the port is at the bottom in the middle, and is 30" wide. There is a 45 on the back opposite of these.

Hi guys, I 'm always trying to improve my system. I have a 15" xcon and a 1500 watts Sundown saz amp. The car is a hatchback toyota Auris, with a little trunk. I had a slot ported box with sub up and port up, at 3.5 ft3 at 32 Hz. This box was too big for the trunk, but I thought it was not the right one for my car. I've heared this same box in a smaller car, with the same setup, and it was ...insane. In my car, it was not really loud. I have, now, a 3ft3 sealed box, with the sub firing back ; I found it was better than firing up. So, here is my question : if I want to do another ported box, what would be the best choice ? Sub and port firing back, or sub up and port back …

Subs: two DC Audio LVL4XL 15's Here is the room I have set aside for the box. I can possibly go bigger. But, if possible, would like to not go bigger. 23 inches high 20 inches deep 38 inches wide I want subs up and the port up. I would like to use a slot port. Tunning could be at whatever would work best with the dimensions given. Anywhere between 30hz to 40hz would be fine with me. I dont know what my cabin peaks at but I have had two setups, one 18 tuned to 32 and two tens, not sure on tunning, Both setups peaked at between 40 to 45 hz. I will be using a US Amps AX3200DE to power them. This will be in a small SUV, 07' Honda CR-V.

I've spent a couple hours sketching up various designs on re calc and torres box calc. However, all I hear about any of the box design apps out there is that they are total crap. Working as much as I do these days I simply don't have time to become an expert in this area. Also understanding that install is a huge factor, I don't want to screw the design up. I am looking to build something this Saturday and want to get it done right so I don't have to change it again because of an improper design. I know there are a bunch of you out there that can do this stuff in your sleep. I don't mind paying for a solid design with cut sheet, etc. (i have PayPal) I also don't need anyt…

just started my new build for my fiance's brother the box will be for 2 jl 10w3v3's

Does anybody know where one us i want to see what i can hit?

I have a Soundstream Reference 500sx rated at 500 watts in 1ohm & 2ohm, is there a difference in sound quality in the different load and what about subs, does it make a difference in sound quality if you have a dual 1ohm or a dual 4ohm sub wired at 2ohm load are there any differences in sound quality.

Ok, so this weekend I plan on pulling out my box and putting the zcon's in. 2 12" 1 ohm z's goin in. Gettin the diehard platinum marine sat nite and puttin the saz2500 in. Rt now my box is 4.75^3. Its an angled box to fit behind the seats of my 3 door s-10. I have another 4" of room I can go up. That would be about another 1.4 cubic feet or so. Rt now the port is on the side and has about 78 inches of area. 19.5 wide by 4 tall. Is that enough or should I make it bigger while I have it out? Or should I leave it alone? Also what would be a good gauge of wire to run for the subs? I cannot wait to hear these z's rumble!!!!¡¡¡¡¡

Working on some fiberglass corner enclosures on an upcoming build for someone and i noticed that the corners that they will be installed in are slightly different. since i was going to begin by making the backs to rest perfectly flush i am wondering if having slightly different airspace for each side, say .1 of a cubic foot. would cause problems. I would say the left box will be about .9 sealed and the right would be about 1.0 if anything. should i add an extra piece of MDF to the bottom to compensate? i didn't know is the different Fs would cause some type of clash in the response

Is each quantity for a 17" Long tube? What if it needs to be longer? 4" Port Tube

ok so i want to make a box with 1 15 in the middle and 2 poorts, 1 on each side, to get it how i wanted it ported, could i just measure out the space i would need for 1 port and just put half of that on each side?

Do crx boxes work in a trunk with the subs up an ports faceing the back?

I need a sheet of hard plastic like ABS to use in a bunch of places in my car. Does anybody know where to get anything close to that? I haven't really done any research so if anybody could point me in the right direction I would really appreciate it.

I attempted to download the IASCA rules today from IASCA's website (that looks and works like it was created by an 8 year old) and they require an account for download. For what reason, I have no idea. They also locked the PDF's so you can't print them. Anyway, I got the files another way and uploaded them to FloridaSPL.com/iasca (no account needed)

((2 * 250.3125 * 10) - (0.159230769 * 2 * (12^3)) - (30.830229 * 2)) / (12^3) = 2.54299074 cu ft. That’s with port, sub, 45s and skeletal displacement taken into consideration. That makes the box tuned to around 34.02Hz if the math is correct..... let me know guys, what you think it is for 2 dc audio xl 10"s powered by an aq3500d1 in a 1ohm load, think my tunining is to high? still able to hit the lows you think? i wanted to be able to play normal music as well since its my daily driver 1st real build so im just taking everything into condsideration since this box is built already just waitin on my other d3100 to come monday

I am ready to finish my box this weekend for my BTL but have a few questions first. When I attach the baffle with the second piece, will the port tuning be changed at all? The top will not be flush after I add the second piece. Ive been looking in the build logs and wherever I can to see if this is what everybody else does. No luck so far. I know its only one side of the port but I want to get it right and not waste wood. Hopefully you guys understand what I am trying to say. I bought like a 2x2 stick for the bracing as it was cheaper than the closet poles. Can I shave off the corners so there isnt such a big edge or should I just go get closet poles? This wont be my fin…

I need Help for my 10 Xcon I would like A Ported Box, would like to have my tuning around 32 If opti.

I was messin around and just seein where the power wire would go through, and i realized that the firewall already in use for the factory wires was pretty much full, and i don't see how 1/0 is going to squeeze in there. But a couple inches to the right and one or two inches above it, theres what i'm guessing is an unused firewall hole. Its a rubber surround with a rubber filling. I tried to see where it came out on the engine side, and i couldn't find it. Does anyone know if i could (once i find the hole, as it was a little dark when i did this) puncture the rubber filling and take it through there? If not, what should i do?

Alright so iv made my box and everything and I would love to use body filler to smooth t all out and cover allscrew holes. I don't really want to spend any more money for this box... What's the cheapest way to obtain the perfect box?

I was wondering if the calculator here ; http://www.psp-inc.com/tools.html calculated it's tuning including displacement of the tube or without displacement. Thanks.

This is what happens when you get wood cut at home depot. I got all my cuts at home depot and some are 1/16 to short. they wasnt using the regular saw. i was wondering can i use some sealer tape for the cracks?

hey guys I'm about to start on my new box for the TI and was wanting to put some internal bracing for this box. Does anyone have some good pics of internal bracing, I need some ideas on what to do here. I already have the box plans, just need to get some basic ideas as to where to place the bracing. thx. -chev

I talked to Nick at Incriminator Audio (Subwoofer Maker) I believe, he said go with 2.5 Cubic Ft per sub and a 70 inchs port in a 6 Cubic ft Box. 2x Incriminator Audio Lethal Injection 12 Inch Subwoofers. I did some further refinements. This is what I came up with Subwoofer Volume - 2.5 Cubic Ft Port Hz - 32 Box Specs: Width - 36" Depth - 26" Height - 14" Net Volume - 6.36 Gross Volume - 5.08 Cubic Ft Volume Per Woofer - 2.54 Cubic Ft Volume Displacement: 0.22 Cubic ft - Woofers .056 Cubic ft - Bracing 4x 45 Degree Corner Braces 1 Cubic ft - Port Volume Port Specs: Port Volume - 1 Cubic ft Port Area - 91.05" Squared Port Diameter - 10.77" Port Width 2" Port Height 12.5" P…