SPL & SQ / Fabrication

In the trunk of my car, there are two bars running across the top of my trunk, that attach to my trunk lid, i suppose its there to adjust tension for my trunk lid, will if i remove those i can get an extra 2" height and that will make a large difference for my enclosure and layout in general. Anyone remove these before?

I need some of you guys to make sure my calculations are good and that this box will work out. This is the first box I have designed to be as critical as needed. I am wanting to try a subs back and port into the cabin approach. This should work out to 6.75 Cu Ft after port displacement and after the 15 " BL's it should have 6.39 Cu Ft at about 32 hz. I am wanting to try to make it bigger and get maybe close to 4 cubes per sub. I have about 7 or 8 more inches to work with to make it a little bigger. But I figured I would make sure I am doing this correct before I go and design another one.

This is a goal to reach 150db tuned for a daily driver. I've been doin some measurements and have came up with a box design that has me smiling and this will be the last box i will build for the car... unless i downgrade later. This is my last attempt to try and reach 150db with a daily tuned setup and i'm crossin my fingers because this is only with 2 15s and 4,400w of power. Here is the wild design- Remove back seats, where back seat was, install a wall there sealed off from the hatch area. Now, i have 33" of depth from this wall to the back of the front seats. The box design would consist of 2 15s ported facing toward the wall. There is an 8" gap from the front baffle …

i have a 89 chevy 1500 standard cab and am tryin to design a box that will fit behind the seat. Anybody on here have any expericence with these vehicles and enclosures like this?

Was wondering if anyone on here could offer me a reaonable design for a btl 18 for free. I have a guy at the car audio forums that has always done mine for a small fee (they are reasonable). BTL 18 Tuned to ~30 hz. ~ 5-6 feet ^3 48 inches wide... and max of 24 inches high.

Hey I want to build a ported box for 2 12" SDC2.5s, but I've never built a ported box....and it confuses me On the Audioque site it says each sub should have 2.5 cuft and that includes the port and sub. But what should the port length, width etc be? I've searched and read up on a lot of stuff and other peoples' builds, but still am not sure what do.

as the title says im very interested in this i came across it on youtube watching some vids read the comments a let me know how it is done please

I have an audiopulse axis 15 and a saz3000. I finally got my non-blown sub in the box and in the car. I was tunin it all and saw my hair movin it the window, so i got my gf to come over for a try at a hair trick. enjoy

Alrighty, I think I have the new design down. Going to be 4 Se 12' in 8cu.'s after displacements. Powered by 2 SAZ-1500's strapped tuned to 35hz. After doing alot of reading,searching, and math I have come to this: 3 6" aero's ( around 92 sq.in. of port total) for a length of each port to be 18.94"(19.94 overall). Should I have more or less port? I have read and searched through quite a bit of the posts. Some of the math and that calculators I have used said I need around 138sq. in. of port. But I have read that when using aero's you may only approx. need 2/3's of that. So with that in mind what's your opinions. If this is wrong can you point out some more pla…

If I were using the RE enclosure calculator, do I need to take into account the speakers displacement for the tuning? Should I tune about 1-2 hz below my desired tune hz? Any input would be greatly appreciated. Also does anyone know what a Kicker L7 would like the box tuned to? Thanks!

any body have it its impossible to find

So here goes... I have a 98' Mustang GT Convertible. I want bass in it. It Doesn't have to be anything outrageous.(though my Boyfriend said I should put 4 12's in it) I was wondering if yall had any ideas on what i could do? I Don't Really want it in the trunk though ,for one..trunk rattle really annoys me, and I like to see the woofer excursion. Second My trunk is sealed off from the cabin of my car.. My Boyfriend and someone else Mentioned to me That maybe a clam shell would work in the back of my car, If i took the backseat out. I'm not really sure if theirs any other possibilities that could go on..considering it is a convertible. If there is though, I am open for s…

My shop teacher has a 1 inch thick piece of plexiglass, and he said if I can find way to cut it, I can have it. I have a tablesaw, circularsaw, router, and a jigsaw, but wasn't sure if any of them would cut it. Will they?

1. other than using the 16in per cube rule, how do you guys calculate how much port you need? and is this an accurate calculator? http://www.carstereo.com/help/Articles.cfm?id=31 2. how much port area do you need when using aero ports? same calculation? 3. when using a flared port, how do you calculate the tuning; for example, does the flared part of the port count towards its overall length? always tryin to learn new things here, thanks guys

Well I've almost got enough saved up for a fully loaded 18" btl. I have a 2003 extended cab s10 this will be going in. My maximum dimensions are 23.5"(h) x 18"(w) x 50"(l). Those are outer dimensions. This will be powered by a Sundown Audio Saz-3000d into 1 ohm :bigclap: . I was wondering if 6 ft^3 would be fine with that much power with 80 in^2 of port tuned to 30 hz.

Its been long time since i been getting all my equipment and now im only a couple of weeks from it :bigclap:. now im scared to design my own box because of the big box that is going to be and i dont want to mess up. i have a silverado ext cab and im taking the back seat out, no one fits back there anyways . Ok my max dimensions are 26L,24w,26h those are counting the thickness of the wood oh and i almost forgot the subs are gonna be 2 18's DC lvl 4 with lvl5 coils. i was thinking of having the subs front and port front in the bottom tune to 32 or 33 hz if anyone has has time to build me a design il totally appreciated.

Still doing my Thunderbird blowthrough build with the 2-12"BTLs but Im already looking ahead of what I can upgrade to. I know what I wanna do (no Im not telling). Soooooo I want some opinions on a enclosure I thought up. The question is really about the direction of the port. The box will be a half L and half T shape.....(removing rear seats) part of it would be in the trunk but most of the box is in the cabin. so the subs would be facing up with the port forward. reason why I want the subs up is so I can use some plexi. It'll be just above shoulder level. Leveled with the rear deck. This is what Ive drawn up. Do u think the port will be fine facing forward? note this is …

Hi, i am looking for Street A class. My install is: Two amp EM-PHASER EA1800D, and two ALPINE SWR1042D. today i was build box 2.3f^3 (65l) and port at 45hz~ cross area 43.25in^2 (280cm^2) at 19.6in (50cm) long. so my result now is 147.4dB at 54hz. i have about 5kW at 0.5ohm linked amps (99.1V*51.7A). in Lithuanian street A class we can use one amp or two linked. so with open door result is 148.2. Somebody have an ideas how can I do more batter result?

alright i went active last week and blew my tweeters withen about an hours play time.... maybe too much power.. maybe i had them crossed over wrong.... 100.4 sundown amp... 1st model and these ar4e my trweeters... http://www.madisound.com/catalog/product_i...roducts_id=1466 where should my settings be?

Just got about everything I need to start the build, so I am starting to design the enclosure. Did some searching on the site and haven't really found the answer to a couple of my questions, so I will post them up here. First the box is going to be for 4 RE SE12's powered by 2 SAZ-1500D's strapped. I have the 1/0 for power and runs, and am picking up 2 new batts for the back tomorrow. This all going in the Suburban. Box size ideally is going to be 8cu.ft. with around 128-157cu.in. for port. Will see if I can fit aero's if not I'll do a slot port and this is for daily. I have built and tried 3 different boxes so far. All peaked between 40-45hz, one box being 2 1…

First off managed to pick up a 93 civic hatchback for 700 bucks and I would like to know what type of set up would be best, like port direction, sub direction, box style all opinions welcome as i'm pretty sure someone here would have done something like this already.

I was wondering if i could run two rl-p 18's in only 7.6 cubes sealed after the sub displacement. Sounsplinter suggests 4 cubes for each 18, so would running them in a smaller box not be a good idea?

So after much searching throughout the internet I still cannot figure out how to make a crossover. All I want to do is put a 12db/octave high pass on my 3.5" 2 ways at 500hz and a 12db/octave low pass on my 6.5 midbass at 500. All speakers are 4 ohm. I dont know if I need a capacitor and an inductor for each crossover or just one for each. Can someone please help explain how to do this or hook me up with some site links? Please and thank you in advance.

Alright, so I messed up on my port. The port it skinnier and longer instead of wider and shorter. I have a BTL, and whenever it plays the lows, I feel like its not hitting them as hard as it should sometimes. I guess I don't know how its supposed to hit in the 30hz - 38 hz region. People say songs like Juice box will hit hard, and it barely hits hard for me it seems like... Same goes for some other low songs. Here is a pic of the port in the box: Here is the port that should be 33hz: Here is the port now (the 21" measurement comes from the 22", I had to cut an 1" off to get it to equal the port opening on the back of the box): Could someone tell me what this tuning wou…

I'm starting a new build for my two DP 21"s in my Expedition, and I'm looking for some ideas. My ideas are in the above poll. Right now I have a subs up, port back setup. Current box is 20 cubes with 300 sq. inches of port at 32Hz. I'm looking at about the same volume and tuning for my wall as well. Possibly tuned a little lower, I loves my lows. The wall will be to the b-pillars. I'm basically looking to get as loud as possible on music, but this is for daily, so it's not going to be a burp monster. All votes, comments, and suggestions are appreciated.