SPL & SQ / Fabrication

I just got a box design confirmed by a few of my friends that it will work.. Now I do not have the space for it (doh). It is literally a few inches too big to fit in my trunk. Pretty much it is a 4 cuFt box tuned to 30hz using two removable aeroports. One removed keeps the tuning at 30hz, two in makes the tuning 44hz for comps. Now my question is what if I use pvc piping (I heard its not as loud because its not flared) and instead of having it come straight out, make a 90 degree angle as soon as it leaves the box... Anybody know what this would do for tuning? Or how to figure out with a box calculator what it may do?

I have a Fi Q motor with cooling option with a 6 spoke 18 basket, single layer nomex spiders, tall roll surround, and dual 2. Recone made by spl audio. I have it in a box thats 39.75x 42.5 x 13.5 with a 10"x12"X42" portThe sub and port are both forward firing. I can tell the port needs to be shrunk but i was thinking of doing a 6th for it instead. Any ideas?

Just curious on how much a shop should charge for a box if i supplied them with cut sheet and just had them supply and cut the wood? I enjoy the box building process but don't have the time,skill or equipment to do nice straight cuts. I should be able to design assemble and finish. What do you think? Around $100? Ill talk to my local shop this week but wanted to get yalls opinion.

Okay so many designs and tunnings have been done at this point any new ideas will help!! Car freq: 50-51hz box tunned to 48hz 145.2db 8.2cbs boxtunned to 43hz 148.8 db 5.2cbs boxtunned to 38hz 147.1db 5.2 cbs boxtunned to 32hz 145.6db 5.4 cbs all boxes are vented box style subs firing up. box tunned to 38hz 3-3'' aeros 4.0 cubes 143.5db boxtunned to 45hz 3-3" aeros 4.0 cubes 139.0 db subs up ports back also tried firing to left side of car then right no change all recorded loses?????? any help will be great!!!!!!!!!!!!!!!!!!!! thanks,

Hey guys this is my first post! Seems like a great forum with knowledgeable members, so anyways... What is the best stuff to seal an enclosure with? Silicone? Caulking? Which type?

so here is my problem.. Ive never sound deadened a floor of a car but i have done everything else... so i pulled up out my seats and my carpet today so i can get started. well i noticed there's a rubber like matt and Styrofoam stuck to the floor should i try and pull this all up or am i gonna have a sticky mess?. im wondering if putting sound deadener on top of the matt would even do anything beneficial. should i just do the bare metal areas? I have 50 sq ft to put in on the floor and firewall. just trying to kill some road noise. any help is appreciated thanks a lot

Soo pretty much, I've been wanting to do a more compact sub setup for quite some time, and since its spring time, I needed a nice little project to keep me busy! The design I came up with is pretty simple in concept... basically its going to be a fiberglass ported tube enclosure simular to a bazooka tube. I figured these enclosures can offer me a more compact enclosure than a big box, yet still be ported. Its going to be constucted using a 10" in diameter by 48"cardboard tube used for concrete molding (simular to a sono tube). I'd cut it to the length I need to give me my airspace, create an MDF baffel for the sub to mount on to, use a smaller tube to form the port. …

looking at possibly building a 6th order box for my 10" ssa xcon.. first of all i would like to know how you figure port area needed when building such an enclosure. for a standard vented box i show i need around 35" at 30hz more at higher hz obv. if i use this Car Audio - PORT Size Calculations and Formulas for WOOFER and Subwoofer BOXES and use the bandpass option i would need a box the size of my car in order to tune it low enough... clearly theirs something im missing ? i have roughly 4 maybe 5 cubes i can work with would love to hear some input

Hi guys, i have a trunk car (2004 Camry) and right now my setup is sub/port back. I have experimented with placing the box closer to the front of the trunk (closer to the back seat) or further back (near the rear bumper), so far my car rattles less and sounds louder when closer to the bumper.. Question I had was, would I gain anything if I flipped my box so that the port/sub was firing into the cabin? if I am listening to the sub at high volume I usually fold the rear seats down to allow more air to move... Wanted to know if anyone with my car or a similar setup has tried this and what results they had before I manhandle a 100lb box and re-wire my amps etc.. thanks!

i have no experience in enclosure construction at all and have been tearing through forums for some helpful advise in enclosure designs. I am pretty confused at this point about some things and was wondering if anyone could clear it up? I am under the impression that if a certain speaker is in a smaller enclosure that it will handle more power and a larger enclosure will be more efficient (less box rise). so if that is true, will they be equal in spl if they receive the same amount of power (after rise) rather its in a "smaller" or "larger" enclosure? i have also heard of people covering ports to play with their tuning, is this just a solid cover reducing the height/width…

Forgot I uploaded these to photobucket Quite the challenge considering it's a crackerbox tracker, that's a manual, and I wear a size 15 shoe. I'll get some more pics when I get back home.

Current setup for my 15" Xcon: Sealed enclosure with dimensions - H: 17" W: 32" D: 15" Total space I have is: So I want to do sub up, port side firing w/ aero ... Does this looks good in Torres' calculator???:

Anyone ever built a box for 99-06 ext can gmc or Chevy truck? I am trying to make one but don't have my truck until 2 weeks from now since it's getting painted. I mainly just need some max dimensions or an existing design. I appreciate any help

When building a common chamber ported box for four subs do I take the suggested enclosure volume for the sub and multiply it by the number of subs. ex. A sub requires 1.25 cub. feet minimum. The enclosure is going to have 4 of these subs does that mean that the box should be 5 cubes since 1.25 x 4 = 5

I want to build a sealed box behind the back seat of my 08 Dakota Crew Cab. There is VERY little space back there, to the point that to get my airspace, I need to get rid of the back wall of the box. My idea is to use some damplifier pro or spectru sludge on the cab wall to create the back wall of the enclosure. Am I on the right track? Or is there a better way to do this. This is the only location I can use, due to restrictions from my wife. Thanks Rob

My uncle had all the tools to help with the build but then a lady drove into his garage and in the process ran over the main gas line. His whole garage was torched, including the tools and his brand new Honda Pilot. Since the last time I've posted, I haven't had time to build it but a coworker of mine wants to help out with the build so I just wanted to go over some options. TIA My max outside dimensions: W=35" L=8.5" H=15". This is going in an '06 Suby wagon. The sealed box should work fine but I'm wondering if ported could work also. I listen to some rap, but mostly alternative and stuff like Blue October, Silversun Pickups, etc. I think I have the room for ported…

Not owning a meter I have not gotten to do much testing. My SPL comp runs have been as much for testing purposes as for fun. I have done 3 testing sessions not in comps. and the 1st 2 were in between comp runs for 20-30 mins each and then yesterday I finally got a chance to do some rigoris testing for a few hours. Here's what I learned helps my TC get louder: 1. a. Passenger seat all the way forward as if some one was getting in back seat of my 2 door, a funny thought cuz I made my car a 2 seater with a massive enclosure. b. The back of the seat all the way forward. I have a pic. of this if any1 is having a hard time visualizing, but its a common practice with db-dragg…

can you do a 2 or 3 way active set up with this equipment? (Alpine CDA-9884, PXA-H100, KTX-H100) im doing a 2way and will try a 3 way down the road so id like to get something that will have the processing for the 3way when im ready crutchfield has that trade in (exchange) system were i can get a gift card for there site. (im going to sell them my sony hu and old ipod for a like $100). the alpine hu is currently $170. im trying to find a better deal on the PXA-H100, $150 is alittle expensive and i think i can do better. the h/u will be new w/ warranty. so im going either this route or that clarion h/u. with the mic and everything on this combo it would seem that my firs…

just kidding ok when posting DB numbers you should post what mic it was on and how you metered (sealed on the dash or outlaw) seeing all these people doing 155+ make's me cry till i find out it was on the ac mic with the door open LOL

so this last weekend i went to my first ever spl competition and i didnt meter as well as i would have hoped but people were nice enough to help me out. one of the suggestions was find the right hertz for my truck. so i was hoping someone on here has a truck like or knows someone that has a truck like mine and knows the right hertz for my truck. i have a two door tahoe i have 4 12'' ppi pcx subs in a 6.5 cubic foot box with two 6'' round ports tuned at 32 hertz. i got told that i need to make a square wooden port and it needs to be at least 18'' in length i dont know if thats right or not so id thought id ask. i plan on making another new port this weekend for my next c…

Ok, so I called Pioneer to check and see what they recommended for a square port and they told me 1.65 ft^3 per sub 7in^2 of port per sub 6" deep. Which seems SUPER tiny, but when my boy (BngBlzr) had 4 TS-W306DVC's in his blazer with the same specs, shit was loud. So I got the box all built, and I am NOT IMPRESSED. So what do you guys think for port, I don't want to rebuild the whole box, preferably just the front where the port is. The link is to my facebook photo album where pics of the box are. I am trying to locate my piece of paper with the dimensions written on it to throw that in here for you guys to play with too. LMK what you guys think cause from hearing his 4 …

ok im making my first attempt at a custom box. its for 1 sd12 in the trunk of a honda accord planing on sub facing back and ports facing up to go through the rear deck. plywood (no mdf at local building store) 3/4 inch depth 18" w 20" h 14" port (1) L 12" dia.3 if my calculations are right box is 2.21 ft3 tuned to 34.15 sub displacement is .10 so that should net me a 2.11ft3 box (damn i hate math) am i anywhere close? or even headed in the right direction? any input would be great cause right now its in a cookie cutter Q-logic box (1.5 ported and its starving for air) thanks guys and gals

i am sick of not having an SQ/SPL Hybrid class we could call it LSQ-VFL im bored with just 1 or the other anyone else like to hear the rest of the music loud enuff to mush your brain into peanut butter.... without distortion ? or as lil as possiable

Discuss.

for thoes who have compeated in iasca or usac sq the question i have is where should the center of the stage be in the car. my personal prefrence is center of the steering wheel. i want to know if it should be right in front of you in front of the steering wheel or the center of the dash as you would need to look at the middle of the dash to imagin thats where the voices are coming from. which is the correct answer for competition i am runing 3way active and have time alignment to play with