SPL & SQ / Fabrication

Okay so ive been doing loads of research on parts-express and so forth on finding a sub for a 1974 MGB. I really only want something super small and getting something for better sound quality than just two 6.5's in the doors. Behind the seats is a bit of space but want to keep mostly the stock look. However, there is a compartment where a second battery used to sit that is no longer there and I think I could find a small box in there. I measured the dimensions and can get about .15-.18 cuft gross airspace without making anything look out of the ordinary. I havent found much for the 8 inch woofers or subs that will suffice in that airspace, however there are various o…

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

About to build a box for 2 15"s FI BTL's that will be going into a 87 Mustang. Each btl needs 3-5 ft^3 and is .21 displacement. This is my first Wall / Semi wall build so i just wanted you guys to look over it and tell me what you think.

my box is going to be 7 cubes after displacemets. box is 20 inces deep (so one port side can be 18.5") 112 inches of port area, 33hz my question is, can i do two ports, each 18.5"x3" at 12" long for ~33hz would that yield a net port area of 112 and keep the 33 hz tuning? if not, how do i go about calculating this? im going to try to do a drawing real quick to help you see what im doing

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 …

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.

considering doing a box with aero's wanna tune it lower also around 30 hz right now its in 3.4-3.5 cube at 34 hz on 3k rms to get the tune i want and my depth issues guided me here, i hear you need to have roughly the diameter of the pipe distance from flare to back of box for it to be right? so final figure would be 4.25 cubes at 30 hz with 1 6" Aero at 16.5" for that tuning and thats from flare to flare. Should i just go to 2 3" aero's or what do i do hear, because i will be going 16.5"+6"+1.5" for the MDF im too close to the rear hatch, it would be like 3-5" from it

im looking if you have some photos of pvc tube with aeroport im looking forward to prove this on my car thanks i have some photos and i wanna see if you have som more for the experiment thanks something like this but i want to put 3 aeroport per pvc tube some smaller aeroport to check if this is better than sealed pvc ohh its for 15 RE XXX

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 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)

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…

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

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

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.

I am building a box for 2 XCON 18s and am trying to get as close to recommended specs as possible. box is going in a 99 Durango. i really want my subs facing forward so people can see what they are feeling! But not sure about where to place the port. SSA recommends 100 inches port area for each sub, so only real options on location is on the front, bottom; or facing the back hatch. i noticed a lot of street rides have the port facing the hatch for whatever reason. any input/suggestions will be greatly appreciated

I been going back and fourth for the past few weeks about doing a enclosure to go under the rear seat in my truck. I entered my measurements in the enclosure calculator on the12volt. and i came up with 4.7 cubic ft but it have the transmission hump thats right in the center of the floor and i dont know how to subtract that from the total that i got from the enclosure calculator....do you guys think and enclosure like this would work with a external port? Im still looking around for some good 10's that would work with 1 cubic ft or less

I want my subs to face up with the port up like one of my previous boxes. I cant seem to get a lot of input and like Ive said previously the pro designers dotn wanna mess with a camaro enclosure. Assuming ive done my math correctly does this look like a suitable enclosure? I just started using sketchup so I have figured everything out so nothings 45'ed or anything.

I saw this done with on RL-p by some one on here. Basically my only motivation to even think of doing this is because I have a Rear Strut-tower Bar that kind of divides the trunk (99 civic cp). So any box I put in is going to either be really small or really convoluted.. and I don't want to do that.. unless I have too. So what are your thoughts? Another idea is to attach it to the seat back and then build a 1.0-1.7cf sealed box around it.

i am doing a 4th order in my grand cherokee and was wondering what would be a good sealed chamber and ported chamber. Equipment i have right now: 2 18" DC lvl5's 2 Sundown 4500d's 1 300 amp powermasters alt 8 3100's

Maybe its just me, but, i was just on their website and they didnt have any events posted in Cali....... anyone shed some light on this..

ok guys, its time to get some plans going for this box. im using 2 12" ssa zcons and pushing them with a audiopipe 3k (ONLY UNTIL I CAN AFFORD A BIGGER 4K+ AMP) so its not my perminant amp here fellas. i took my max dimensions tonight and used a box calculator and i have 6.81 cubes to work with. as for tuning, im not really sure. i like my lowwss (30hz or so) but i want to be able to throw up decent numbers. i was thinking 34-35hz maybe?? not really sure. thats why im here asking you guys for help on this so i dont waist my money.

This setup will be in a 1985 celebrity wagon. I want insane, air moving hard hitting lows. Two different setups.... 1. I was considering a wall running directly behind the front seats with 4 L7 15's and the most port I can run and still have a low tune. I'm guessing about 300 square inches of port. 2.Another idea I was considering was running a huge box with subs up and port up that starts with the box directly behind the front seats and takes up all cargo area, but keep the box just tall enough to have the port firing on the angled back glass. Of course the port will be as big and tuned as low as I can logically make it. On the 2nd idea I was going to run a lot more c…

Hi I am starting my build very shortly and I have a question on making the sub box. I have made L slot port boxes before but for my 2 12" Fi SSDs I want to make the port in the middle. So the question I have is can I make it by just calculating for 1 of the subs and just build it together? Space is not an issue. Thanks ahead for all the input

((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

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