SPL & SQ / Fabrication

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

I'm going to attempt fiberglassing for the first time. I'm going to make some kick pods for 6.5" Midbass and Softdome Tweets. I've read just about every forum and "How To" I can find so I'm pretty sure I know what I'm in for, but the one thing I haven't been able to find is how much chopped mat do I need to buy. I'm going to order from US Composites and they have 3/4, 1 1/5 and 2 oz chopped mat. Which size is most commonly used and how many yards would be adequate? I'm sure I'll need some extra just incase I do some beginners f*ck ups Thanks, Bob.

So last time I entered an spl I tied a guy with two 10" solo x's and a rockford fosgate t3000, and there's another in 2 weeks and im sure he will be there. I dont want to risk damaging my sub by upping the gains or voltage any more than i did last time, but perhaps i can adjust the box/ place it in my car differently? The box is a little over 4^3 at 31, and it is about a foot back in my trunk facing into the car. Only ideas i have now are putting 45's in my corners to help flow and raise tuning, and face the sub towards the trunk. Are there any little tricks anyone knows about to give me just a .1 or .2 db gain?

Ok, I will be googling how to do fiberglass work soon enough....but i just wanted a general concensus of about how tough it can be....I want to build a L type sealed enclosure going from the floor in the back seat of a friends truck and into the center portion of his seat. I would like to do it in fiberglass and just wanted a general idea of about how much work i am in for. Is it okay to have like 90% of the enclosure to be mdf? I just need the top portion to be fiberglass so i can angle the subs to where i want them to point. Also, it is okay for 2 subs to be in a common chamber isnt it? I thought it was, just wanna make sure. Thank You

i know its kinda of a noob question ... but how big should i cut my counter sink hole, like the diameter

Ok I've been doing a lot of research on standard 6th order bandpass boxes, and haven't found enough information to decide if its better than standard ported for spl. If I tune a 6th order with a very narrow high output passband, such as 39hz rear and 44hz front, or in this general region, will it be louder than a ported box with a similar tuning? From what I've seen the 6th order will boost output higher, but it strains the subwoofer more and lowers power handling, so it has more output but you can put less power to it so they balance out... I want to try one out but if you guys think it wont be louder than just ported for spl use only then it's not worth trying. Also I…

Im about to start building a tube out of MDF for a sub box, but before I needed to test things out to see if I could. I also decided to take pics of it for a little tutorial if other people are wondering how to do this. I started of by finding the inner diameter I need. Im going to use this for an 8" sub with a 7" cut out. so my inner diameter is 7" Now outer diameter: I'm using 3/4 MDF so my outer diameter is 1.5 + the inner diameter' 7+ 1.5=8.5" Now I can find out how long I need to cut my board: take the outer diameter multiply times pi to get the circumference, which will equal the board length: 8.5 * 3.14 = 26.7" Board length is 26.7" Now I need the inner circumfere…

I have loved my 18's since I got them, but due to a baby being on the way, I have to get rid of the 150 pound 12 cu.ft monster in the back of my little XUV. I'm replacing them with......(drum roll please)...... A pair of Critical Mass UL 12's! I hope to god that they fit the bill for me output and soundwise.

so ive never really found a concrete answer to this, but for sq is a smaller or larger box better? my 15 fi q is in a 4^3 box it is very peaky down low, with kind of weak higher bass(by higher i mean 40-55 not like midbass), and fi says 2.8-4.0 is good. my brothers 12 fi q is in a 1.8/1.9 ^3 box and it says from 1.8-2.5 and it sounds amazing and even from LOWWWW to pretty high. im assuming the smallest recommended box is good for sq/evenness, and the largest is good for spl/peakiness? (I think i just made up words!) oh btw we are both tuned about the same(31 for me 32 for him)

I want to try out a transmission line box or quarter wave, whatever its technically called, and want to know if im off to a good start... I want to use a 10" Fi BL Dual 1 so 41.5fs with an sd of 310cm^2 = 48in^2 1130/41.5/4*12 = 81.7 inches... so my design looks something like this... I dont know much about these kind of boxes it just sounds like a fun project, If it turns out horrible I only lose a few hours and a little off my wood stockpile...What do you guys think about this design and these measurements?

I've got one of the few remaining 18" Inhumans that I desperately want to hook up and listen too before I get rid of it. I designed up a quick box in WinISD and came up with these numbers. How do they look to everyone? 8ft^3 tuned to 34Hz 98" of port, 20.31" in length Nothin special, just a good daily driver box.

what is the best battery for street A. 650cubic in or less. from what ive found the nsb75 kinetik hc2000 and powermaster d2700 seem to be at the top. what bettery is the best and how much better is it than the others. if anyone knows of another incredible battery im missing let me know.

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…

so within this next week i plan on getting an Fi Q 18 with the BP. Itll be powered by my elemental design nine.1 (and from reading through these forums, noone seems to like ED, but this is the amp im sticking to) and im guna be wiring the sub down to 1ohm. my enclosure is going to be in the ballpark of 4.5 cubes in my '01 extended cab ranger...but this time i want to go ported, and this WILL be my first ported box (and my 4th setup period) i want to do aero ports, but im still having a hard time trying to figure out how to get port dimensions and etc. and idk what to really tune it to either....i guess around 30hz or so and if it helps, i listen to rap (and country, but t…

What is the minimum number of yellowtops needed to run a Sundown 3000d? I've still got the stock alternator in the Frontier and want to see what I can do. BTW the Opti 50C is up for sale.

Okay, it's about time to put my Sundown SAZ 3000D to good use, I've finally settled on subs, they are Crossfire XP 15's that I will get for super cheap and they are high quality subwoofers: http://crossfirecaraudio.com/htdoc/cf_m01_product_05_xs.asp#. I have some dimensions worked out, I used the SSA Box Calculator and I believe it's all worked out, I just need help bringing the calculator measurements to life! http://www.soundsolutionsaudio.com/home/in...int=1&page= Can someone give me a hand on how to put that on paper so I can build it?

I know some of you would prefer to put a JL w6v2 in a sealed box... (I'd like to go that rout if I had two subs and a powerful enough amp to push them both), but since I just have a single sub and amp I want to build a ported box. I want to make the box wedge shape so I can get the most out of my trunk. I did design a box using a 4in round port, specs: Sub is a single 12" JL audio w6v2 3/4" mdf box external lengths: height= 14.75in width= 26.0in bottom depth= 13.5in Top depth= 8.25 in 4in port, tuned to 32hz Net volume, 1.5 cu. ft. Final internal volume after adding in sub and port displacement ~1.76 cuft. I've been hearing from alot of people that I should make…

I was wondering if the port calculater on the carstereo.com page was worth a poo? I used it to build my explorer (8 kicker comp 12"s and a 2500.1) as that worked out perfect......but i used it to build my 4runner (2 hk802sx amps, and 4 SSD 15''s loaded) and it doesnt impress me at all....so i think i figured out why.....here is the link to the page http://www.carstereo.com/help/Articles.cfm?id=31 But here is my real question...when you are calculating your port.....and you punch in all your factors and the end result tells you how long your port should be.....Does this program already remove the port displacement? Im assuming it does since you have to figure in your tota…

think this is a good stasrt for a moderate sq set up i have a kenwood 6019 indash focal 165 6.5 v2 pollyglass componants focal 6.5 pollyglass 2 way coax. kicker zx1000.1 kicker 350.4 an 2 re se 12's subs. im thinking of swaping amps out to something more powerful but is this a good start?

Are there any pros and cons of having ports firing: the same directions as the subs, 90 deg off the subs, 180 deg off the subs?

What is the best way to determine the frreq of a box? How do you calculate the Hz it will be tuned to?

Hello This is my first post here, I made a quick look ,it's interesting forum. However I want to ask about the specs of the SQ system and components? I have Car PC controlling my sound system which is: Car PC with Turtle beach and Creative Xmod USB sound cards. Rear - Infinity Reference 9613i 6"x9" 3-way car speakers Front - Infinity Kappa 63.7i 6-1/2" 3-way car speakers Amp - JBL CS60.4 4 Ch 240 Watt Full Range Amplifier what do I need to add/change to have SQ system? thanks

I've got an 15" Audiopulse Axis running on a Sundown 3000, Ive got another Axis that should be here tomorrow. I was thinking about making a sealed box for both of them, but I dont know whether to do a common chamber or separate chambers. What are the pros and cons of each?

i have 1K on two Fi BL 12 rear firing in the trunk. would putting a hole in the rear deck improve SPL?that in the cabin will it cause problem for my 6x9 on the rear deck??? what the best way to do it?? Thanks Inadvance!!!!!

I finished my fiberglass box yesterday for 1 15" icon yesterday, kinda anyway. Its a little on the small side at 1.8 cubes. I plan on adding some polyfill to bring it up to ssa's specs for 2-2.5 cubes. I just dont know how much to add, I have a 20 oz bag of polyfill at the house. Any advice?