SPL & SQ / Fabrication

What I want for my doors is beyond my fabrication capabilities, so I'm considering looking for a fabricator in the chicagoland area to do them up for me. I was hoping you guys could give me an idea of what to expect it to cost, as well as throw me some names of reputable shops. I'm going to have them put 12's in my doors. I'm going to try a two way with the Dayton AMT-Pro's. I'm not opposed to working with someone from the board either! I sent a few emails to places I found on Google, but not many reviews to be seen. Thanks guys.

Feb. 7th Glen Burnie, MD Thorshammer is now a 150 trunk! :bigclap:

I have a desired tuning frequency that I want but I will have two ports...I think. The best example I could find is in the Stealth Avalanche build, basically the same idea he did but in a different vehicle and different subs, bit more air space. Here is what it looks like. As you can see, there is a port with a partition in between. So my question is, how do I figure out what to tune too. Do I tune each port to what I want the tuning to be...do I need to do some calculating and figure it out through equations....I could use some help on this subject. Also how does this type of enclosure work since the port is firing directly in front of the subs? I would assume there …

I realize this is somewhat subwoofer dependent, but what are the best tuning frequencies for different goals like spl or sq. Also what would be a good way to match a subwoofer to the goals, T/S parameters? Any help would be appreciated, thanks.

Upon further inspection, my fifteens were abused by the previous owner, and only have one functioning coil each, so i'll be replacing then much sooner than expected. I am still not completely decided on a course of action, but I thought I would ask some questions about walls before I wrote it off as too difficult. First one, I know the weight will lower mileage significantly, which isn't cool, but I live within four miles of all my main destinations, so it's not too bad. Will the weight of a wall enclosure require attention to the suspension? to be honest, i'm not entirely sure what kinds of questions to ask, so any advice from those of you experienced with such enclosur…

So going from my current setup to something more extravagant should spark your interest. Wanting to go with (4) SA-8 V.2's in a 4th order box with a 2:1 ratio. From what ive gathered so far on reading.. * Speakers facing sealed chamber(better cooling&so you can smell the coils if needed) * 15^3 inches of port area PER cubic feet of sealed chamber * The shorter the port the better * Ported chamber tuned to around 45-50 hz. Here is what ive come up with on Sketchup so far. Sketch is not to scale. Came up with - 2.6^3 feet in ported chamber and... - 1.3^3 feet in sealed chamber. Would love some input or constructive criticism/ advice an…

anyone with the skills necessary to design a simple ported box and looking for a lil extra cash.. please reply.. need a box design ASAP

Whats up SSA. Im currently in the middle of my full system install and just took out the stock speakers today. My car has stock 6.5 Infinity components in the doors (woofer and tweeter mounted seperately) and it looks like it has a decent speaker mount/baffle whatever it is called. On the inside of the mount it specifies that it is composed of Polycarbonate with 10% Glass Fiber. I will be replacing them with a JBL P660C component system and was wondering if I would have good results using the stock speaker mount to install them. The new speakers are considerably more powerful and I will be sending ~120watts to them, I imagine the stock ones were seeing less than 45. …

I want to run a Fi Q 18" off an saz-1500d in my new project, a 95 eldorado. I want to put it in the trunk. My trunk isn't tall enough to fire an 18 back so it'll have to fire up. I'm getting rid of the rear 6x9's, so I was thinking sub in the middle of the box firing up and a round port on either side firing into the empty speaker holes in the back deck. Box dimensions would be 38wide, 16.75tall with double baffle and 24 deep. Winisd is saying to tune 6.5 cu ft to 28hz i need two 4" round ports 10.15" long. That's .073 cu ft each. Or .015 total, and .24 for the sub. So .39 off 6.9 cu ft, giving me a net of 6.5 cu ft. Should the ports be flush with the top of the box, or …

Couple of questions for those that have done blow-throughs. This is the back seat in my Mitsubishi crew cab. If I were to mount my amp on the back of the seat (where the sub box is in the pic), would that restrict the air flow in to the cab when the seat is up? Also, in regards to the tuning theory of building the sealed section, measuring peak and tuning the ported section accordingly - does that work with a blow through? I would have thought if the cut out is smaller than the overall cone area, then it would act as a really high tuned port?

I am curious whether or not a 220 Amp alternator would support a Sundown Saz-1500d v.2?

Okay guys hope this is in the right spot! I didnt want to post this in the fabricators thread but anyways here we go. I'm wanting to purchase a box design for 2 12 L7's. The only dimensions that matter is I dont want it over 20 inches tall and over 48 inches wide and 16 deep. I dont want to do a basic slot port or aero tuned port. I'd rather do a TL or something of the sort. All I want to purchase is the design not the box guys. Something cool and out of the ordinary. Thanks in advance guys!

What are some good places to get this stuff? What am I looking for? Is there specific kinds? Are there cheaper ones and more expensive ones? How much is a good deal if I am searching on e-gay? How much will I need to make a 31x26x10.5 inch tub? How thick to I need to make it? Thanks Jerry

Just pondering ideas and wondered why I had never seen anyone use polyurethane on boxes or anything else car audio related? Seems to me like it would be a great finish on the outside, as well as good sealant for the insides of the box. Polyurethane has a very smooth glossy finish which I would think would be great for ports and such.. Which leads me to wonder why it hasn't been used in place of fiberglass in some scenarios. Does anyone have any experience with polyurethane or know why it's never used? One idea I had, was covering an enclosure with playing cards (or anything really) with adhesive spray, then going over the cards with a few layers of poly to give it a swee…

In this episode of "Car Audio Fabrication" I share the proper way to utilize T-Nuts in an install. The advantages of T Nuts are as follows: Screws can be removed several times if you need to access the inside of the enclosure with no worry of srtipping or degrading the thread quality (like what would occur with wood screws into wood)More secure mounting, they cannot be pulled loose from the mounting surface as occurs with wood screws.Other notes: Adding a dab of super glue before securing the t nut to the wood can prevent them from falling into the enclosure before installing. Using a size down from the shank of the t nut for your drill hole allows for a tighter squ…

I have a small problem with my box, its too big now and need something smaller. We just had a baby boy last week and now I need the back of my van for the stroller so I need to build a new box that is smaller but still can use my two 10" subs and still be able to mount the 2 amps somewhere as I do not have room under my seats. Right now my box is 48" wide X 14" high X 12" deep, I would like to make a box that is taller rather then wider. I have 40" high X 14" deep to play with, the stroller is 21" wide. I was thinking of using the 40" high to make the box. I'm runing 2 X Earthquake dbx10 single 4 ohms on a Alpine MRD-M1000 @ 2 ohms so around 1000 watts rms. The box will …

I need advice with my current and future setups. Please anyone with lanzar opti1535d experience, please speak up! I currenly have it in a 4.35 cube net Atrend 15lsv enclosure tuned to 36 hz with 48.5 sq in of port area. Its in my ext cab sonoma sub firing up behind drivers seat and port firing to the driver side at the base of the b pillar. Its powered by a Lanzar HTG2600d at 0.6 ohm. Here is the odd part. It metered a 139.9 at 44 hz and when I inverted the sub so the basket/motor was exposed, I then metered a 141.2 at 44 hz. For some reason I was thinking when I metered again I hit a 142.1 but that's likely just wishful thinking. Apart from the airspace change from inve…

The SQ of the Qs are great but I want to know want the size and specs of a box that would maximize the dbs on daily music. I would think that the max ported box specs at 32hz would do that but would a smaller box be louder? And I know its "install dependent" but just want to see what others say.

How does this box look for a SA-8? I listen to mostly hip-hop and r&b and I will be placing forty-five degree cutouts in the corners so the port area stays the same all the way through and sub will be inverted.

well, after a long and horrid search for a sub, i finally purchased a near new eD 13Ov.2 (bought in Jan. '06). now, its time to design an enclosure. i know eD has 1 ft^3 for the recommended but i was just curious if there was anything better, as it shows 1 ft^3 for the Ov.2 and Kv.2. obviously, looking for sealed right now, not going ported YET. i want it to hit hard, hit all those double bass kick drums hard, want to get as low as possible, and decently loud. oh yea, going to be putting 400 watts @ 4 ohms to it. no plans for amp expansion right now. im looking for a cube, not a rectangle as well. i figured up on rockfordfosgate.com and a 13.75x13.75x13.75 cube (external)…

As always, I have been running around with ideas for the time when I have the money to actually do something with them. I have a large trunk, however with an extremely small opening to get into the trunk, and so I have always had to restrict the size of any box i intend to build so that i can sqeeze it past that opening. So for my next idea... how would it sound to have a single downfiring 15" ssd in a sealed box? For now it would be recieving only 500 watts rms untill I could upgrade. It would be raised 4 inches off of a wooden base, in a 18"X18"X10.75" box (interior dimensions). I have never seen this done in a trunk so i'm curious about its effects. My goals are a "cl…

I'm looking at piping for a 12" port for my next box; please for fucks sweet sake tell me there's cheaper 90* bends out there than four hundred dollars. I just need a 12" port 48" long to get my tuning. I don't want the box more than 42" wide, so i'm looking for a bend or two this is the kinda stuff i've found so far http://www.lowes.com/pd_574544-1814-PVC+00300A+2200_0__?productId=50114329 http://www.homedepot.com/p/Charlotte-Pipe-12-in-PVC-DWV-Vent-90-Degree-Hub-x-Hub-Elbow-PVC-00300A-2200/203950072?cm_mmc=Shopping%7cTHD%7cG%7c0%7cG-BASE-PLA-D26P-Plumbing%7c&gclid=CIa7vLPw2ssCFQ6maQodb7sJAQ&gclsrc=aw.ds http://www.pvcfittingsonline.com/12-class-…

I am working on an intrepid. I am building a new box from the ground up to compliment the rear deck that i am fabricating with fiber. I would like to build a box to be able to port up through the deck and blow into the car. I will be using 2 12" ICONS. I have never designed a complex box before, so this is what I ask. What would be the best way to fire the subs, what should i do with the inside of this box, and HOW should i fire it up into the car? Any help would be appreciated, keep in mind that I am a box newbie. Patrick

if you havent seen how small the trunk is on this car, motor trend stated specifically that it was about 7.1 cubes TOTAL! i cant lose the space under the floor because there is no other room for amps/batteries, and i have to leave about 10 inches from the box to the very back of the trunk for tools and etc. with this said, the question is; what is the best design and setup for maximum SPL with keeping it in daily drive limits? i worked up a few partial boxes and havent really made one that pleases me yet. the biggest so far is two seperates (against rear seat, L and R) 1.6 cubes, each for a 12". sub must be on a mild angle toward trunk lid. is this adequate for a sub li…

I am going to make a box with aeroports for a 15" Fi Q powered by a SAZ-1500. My deminsions that I have available are 34"x30"x14". I was able to get 4 4" aeroports with both sides flared from someone which should fit in the 12-16 of area per cubic foot. I was looking at a box that had outer deminsions of 32"x28"x13" to get just over 4 cu. ft. after sub and port displacements tuned to 32 hz. After doing the calculations for the box I have found out that I am suppose to use 29-30" long aero ports and that will not be able to fit so I was thinking of tuning a little higher. I was wondering what is the rule on the distance the aeroport should be from the back wall so I c…