SPL & SQ / Fabrication

I want to know how to design my own bandpass enclosure. Can anyone link me to something to read? i wanna do 18s in my cut through but the box is going to have to be bandpass as my opening is only about 10x40. and i dont want someone to just design me one. i wanna know why the sealed chamber has to be this big and why the ported chamber has to that big and how to tune them and what not. i know its not an easy thing to grasp but you had to start somewhere... how are you guys designing them?

I currently have 4 cube after all displacement with 43.75 sq/in of port fireimg down the middle tune @35hz. I was told that offsetting a port to any Side would raise enclosure efficiecy And get louder.how true is this? my new plan is 3.8 cube with 50sq/in of port tune @32hz with the port off set. sub are fi btl12 n2 with the mmats hd4000.05 and dc xp 270 alt x3100 in the rear xs2700 up front in a 03 impreza sealed off from the trunck.

I'm thinking about building a new box for my 15" DC level 3. My current box is slot ported to the back with the sub firing up towards the trunk lid, 3.3^ft tuned to 32 hz. I was thinking about building a box firing into the cab (BMW 330CI). Im not too experienced with building boxes but think i can manage this. Has anyone here done this kind of box before and can give me any pointers?

I found a formula that seems to work at http://www.caraudio911.com/ under designing a ported box. But I was wondering why on step four they say to subtract half the port width from the port lenght to get your physical port lenght? When I made my box I dont think that I did this so I may be building a new one if this is important. I was also wondering if this formula works or has been used by anyone here?

i got a box that is 40x32x17 and trying to tune it to 32hz can someone help me find how big i need the port hole

Hi guys, A good friend of mine want to use his Fi btl n2 15" in a new ported box. He was using mine until I sold the box. This will be a temporary setup, as he is in the process of ordering a second btl, and the box for the 2 is ready (he had 2 Xcons 15" in, before). So, the box he wants to use has those dimensions: 83 cm x 37 cm x 50 cm 32.7" x 14.6" x 19.7" Those are internal dimensions. He has 2 4" flared ports that he wants to use. What length should he make them to achieve a 32 Hz tuning ? Thanks very much for your help. I use to "work" with RAM Design for L port boxes, but I want to try the forum members for these round ports.

Heres me covered in sawdust Routing More routing O Bracing Triple top facia!

hey guys have 2 18" smd subs, have xtra cab f150,trying to do NW have 20d x 24h x 57w so i have 11cuft = 5.5 per sub,trying to get into the 50's but i cant seem to get there, any help appr.I have interchangeable port spl port 17x 13 thats the biggest i could fit, subs up on passenger port up on driver,double 13 ply birch all of box,running stetsom 7k2d 4xs power batts (2700's) 1 h/o alt ohio gen.4 runs 0 gauge 2 pwr 2grnd to the 3 batts in rear,should i just go for the wall? i'd get about 20 cu ft. SSNW1-2. ANY HELP THNKS

Info: 2-10" Alpine Type-R's in a sealed enclosure made from 3/4" MDF Volume: .882 ft^3/sub Inside dimensions: 10"x10"x15.25"/sub Outside dimensions: 11"x11"x32" Cut pieces: 2-32"x10" top & bottom 2-32"x11" front (subs will be mounted here) & back 3-10"x10" 2-sides and center divider How does this look? I assumed that 3/4" MDF is like 3/4" plywood in that the actual thickness is 1/2", or am I wrong? Thanks, Ed

I have an 02 mazda protege sedan I'm planning on making a custom kick pod out of fiberglass for my front doors. I'm going to put my hertz mlk 165 (6.5'') midbass component drivers into the kick pods. Will be ran off of an eclipse EA4100 amp bridged to 150w x 2 (for now) I like listening to rock music with a lot of bass around 80 hz. My sub is a dc lvl 4, ran off of a sundown sae1200, Right now its in a ported box tuned to 32 hz, but I'm probably going to be building another box sometime (idk what kind) what type of enclosure would be the best encolsure for my midbass drivers? I can make a sphere-shaped enclosure; does shape matter for a sealed box? while we're at it, what…

A buddy of mine came to me the other day with 2 15s and wanted me to make a box that would fit in a 1999 Buick Park Ave. With a Height of only 14 inches its gowning to be a Wedge Enclosure. My ? is should i port the box in the front or in the back? The back seats do not fold down but in between the seats the arm rest folds down and gives a quick access hole that is 8 1/2 x 7 1/2 to the trunk. I was thinking of putting the port right there but im not shore. pic of trunk access hole http://memimage.cardomain.com/member_image...9377_5_full.jpg

Hey guys, I'm goin g to try and build a glassed back dash to hold my mids. I was wondering if someone could give me any tips and mainly what I will need to do this. I've heard fleece, resin, and hardener. But which ressin and Hardner should I get? If I use wood to build the base should I use like 1/4 inch mdf or does it matter. Anyway, I wanted to get some of the materials today so anything will help. I'm going to look for a jasper jig so I will be back. Josh

I started a wall and need to know what to tune the box to... Any help would be greatly appreciated.

Memphis doesn't carry them in their site. Did some searching but only came up with the subs or some other t/s parameters . I doubt the place that sells them here will give them up cause they make boxes. They are kinda like that. They gave me recommended optimal. The port however doesn't make sense. I used Torres calc. To do their recommended port size. It's way too small IMO. 4ft^3 for two 12's with a port of 12x2.5x19long which tunes it to 28hz. I wanted to get what the actual T/S parameters are so I can get an accurate idea of how to build it.

http://www.power-sonic.com/index.php?id=31&gr_id=40 They use the same glass mat technology as Kinetik. I'm thinking about putting three of these in the back of my car. What do you think? Nominal Voltage........................................................ 12 volts (6 cells in series) Nominal Capacity 20 hour rate (5.5A to 10.50 volts) ................................................... 110.0 A.H. 10 hour rate (10.3A to 10.50 volts) .................................................. 103.0 A.H. 5 hour rate (17.7A to 10.20 volts) .................................... 88.5 A.H. 1 hour rate (61.8A to 09.00 volts) ............................................... 61.8 A.H…

Hey I need to. Build a new box. I have mangled one of my subs so I need to down grade to one sub. I'm wondering if anyone has Term-pak. I just need a basic box 2.5 cu/f with big port tuned 31htz if someone could run the numbers for me it would be greatly appreciated. I really miss my bass.

I am building my first box for my 4 aa's ported to around 25-28 hertz and about .75 cubes per chamber any tips its going in a 1994 gmc serria reg cab.

Jl audio it's interactive

so i think i wanna make some new boxes for my 18" BTL's they sound great in the boxes there in right now but i think i can gain a little more output with some new better made boxes. right now there in a 2000 dodge caravan. the boxes are 8.756 cubes tuned around 32-33hz sub up port up. i have been told by a friend that also runs 2 15" btls in a caravan that sub up port up does not really gain the maximum potential out of the cabin. so i was thinking about making the new boxes sub up port back. what do you guys think about differant setups like sub up port back sub up port side sub back port up which one do yall think would be the best? and can any one explain what port off…

hi, i am thinking about having woodlawn Cabinetry build my box for the 2 12" Icons and i am wondering if anyone has had any experice with them. i would build it my self my i have no tools and he only wants 205 dollers for it and thats with it carpeted and i wanted the baffle to be laminated black.

I have been pondering on what to coat my wall with. I was originally going to go spray paint but motha f that. I want a plasticy rubberized coating on the box. My friend suggested herculiner. Have any of you had any experience using this stuff? Is there something better that I can use that will work good?

ok so i believe my sub box is about 1.08 cuft or very close to that. if i was to add this kit here... http://www.madisound...products_id=711 you think that would fit my application? in order to get 34hz with a single 3" inlet im going to need a "13.06364" long tube. if i got this kit i could cut it to length? what do you think? with a box of that amount of cuft do you guys think i should tune to a different setting aswell? let me know what you think!!

Ordering a AudioControl DQXS digital processor sometime in the near future. All the speakers I have are in my sig. I need suggestions on where to place these bad boys. Two 6.5"s are going into the bottom of each door. for the 4s and tweets do u fellas suggest I do 1. midrange/tweets in doors and a-pillars. 2. doors and kicks 3. kicks and A-pillars note: each 4 will have a tweet right beside it, so it wont be off axis

I have an '04 focus Sedan and I want more midbass. I currently have some walmart pioneer 6x8s in the doors but I just bought some MLI65s and some peerless 2" fullrangers and I figured while I am taking the doors apart I should probably fix the giant holes. My doors look like this: http://www.reversestress.com/other/FocusDoorb4_293.jpg. Well not exactly, mine are red and they still have a bunch of foam on them. But anyway, my midbass sucks. How do I cover up these holes so I can better separate the back wave from the front wave? Oh, and I just bought an SAX100.4 to power them.