SPL & SQ / Fabrication

Got a pair of MTX 8500 10"s that I am trying to sell (brand new in boxes still) but if they do not sell I am just going to use them. I am wondering what the best box style would be for a pair of these? I have pretty much unlimited space (Astro van) so that isn't an issue and they will be run on a XXX-6500D @ 2ohms so like 1500 each for burps, 700~ daily...

I currently have 2 fi q 15s in my dakota and am now getting a Ram 1500. Is it possible to get these sub in there or will i have to settle for what everone else is doing and go with two 10's?

Has anyone ever used it? How does it work? Is it worth $17. I want to spray the inside and possibly outside of my sub box with it but I don't know if it is worth it. Should I just get some spray on bedliner in a can and use that instead? I was hoping it would created a better seal and add strength to the box.

Posted this on *** as thats where I found a box design I'm interesed in, but thought I'd ask here too asn see what you aLL THINK... I want to redo my system AGAIN and I'm slowly stackin parts to get it all ready... I have most of the wiring (RCAs, lots of 0/1, 4 and 8 ga wire, tons of connecters, etc ) most of the major stuff (I have 2 sets of RE XXX Componets, the 4 12" RE XXX D2s older style, 1 SAZ-2000D, buying 3 more and I guess I need 2 SAX-125.2s for my Mids and Tweets), now my biggest problem is how to fit it all and make it all look cool.. Again the ride is a 2000 S-10 Blazer and like I said I want to put in 4 12" XXX D2s in a vented enclosure for ""SQL&a…

I have been searching around and just can't seem to get a good enough grasp on these so hopefully somebody here can help me. I'm building a box so after the displacement of everything it will be 3cuft. I will be running two Audioque HDC310s D1 and want to tune the box to 35 hz. So my question is how many ports? How long? What diameter? I just don't want to screw this up and have port noise or inefficient ports. I was also wondering if I could just get pvc pipe from a local hardware store and use that and buy some flares online to save some money. Thanks in advance!

okay, so I drive a 1995 honda prelude. I just got my nightshade 12 about two weeks ago =], I am running it with the saz 1500, I have also done my big three. I feel my nightshade isn't at the full potential but, it could just be my box. Off the top of my head I can not tell you my demension, all I can tell you is that its 2cuft at 33hz. I am planning on building another box very soon. I would like to know what input anyone has on they're 12" nightshade and there boxes and how they sound, also anyone with a prelude and where the have there sub mounted and the port faceing. Thanks, Jordan

Hi folks. I just picked up a pair of L7 10's to go in my single cab 06 Sierra. I would like to go ported if I can make it play loud and hard enough over a sealed setup to be worth while, however I am not sure as to what my best bet would be in terms of porting for this. The enclosure dimentions will be18"Hx57"Wx7D which is good for 2.91 cubes if my math is right. I've been running 1 12" powerbass L12 in a 2 cubic ft ported enclosure with the sub behind the pasenger seat and one 4" port firing up from the top on the oposite end and it has sounded pretty decent, but I want to run more power and get louder and due to mounting depth issues a more substantial higher power ha…

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!

so i took my box out of my car to add some fiberglass resin to it, and some supports, but i was wondering what side should a port be on for the best spl. passenger side or drivers side. the sub and port will be facing the trunk. Thanks,

I've had some crappy 12's (MTX RoadThunder) and a 500 watt Bazooka amp since I was 16. I just got a new job and wanna go big. I have a friend who has a DD 10" (2510 I think) hitting 139 db on music with 700 watts. Even though I have more money to work with, I need to keep it as cheap as possible. I really want a 15 and however many watts it takes to get loud as fuck without blowing the sub. -I was looking at FI Btl but its a little high -I know DD is good -I don't know anything about Incriminator. -people have mentioned RE the only ones of these I've seen in action is DD. This is not an SPL build, just a daily driver that I want to be louder than the crap I have now. …

I have four massive p3000 amp. ( rated. 2660 @ 4ohms) I what to istall 4 btl 18s. Need the opt. Enclosue size.(ported ) sq is important. Spl would be nice. I would like to use 5 cube. Per,but have 10 cubes per.

hey all been looking to make a t-line for a large scale project but wanted to start off with something small in case it doesn't turn out so well. now i no the port area has to be the same as the subs cone area, and the length is the speed of sound divided by the fs of the sub then divided again by four. but ive been told some have a common chamber and some don't and also im trying to figure out how to tune it or can you only tune it to the fs of the sub? any help would be greatly appreciated and ill let you guys know how it turns out once im done thanks mike E

Just finished an install on my 95 probe. Put a DD 3515 in 3.5 cubic foot (after displacement) box with 2 - 4" aeroports at 17.75". Hooked to a RF 1000a2. Box is a standard CRX design. I've been toying with box placement and right now its sub up port to the side. Sounds decent, but a friend had this exact setup in his 98 Explorer and it was quite a bit better in there. So I'm assuming the problem is related to box design, tuning or placement. Any suggestions??

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…

On the Termlab im hitting a 144.3 sealed up at the dash with a sweep. its in a trunked cavalier. i just want to know if i can get that score a little bit higher? would holding the trunk lid, sunroof, or doors down during a run help? would more room for air to get into the cabin help? does subwoofer box placement help, meaning how far away from the trunk lid it is, also how about rear seat folded down half way help? how about front seat positions? kind of just trying to get as much of an edge as i can. with the 144.3 run it was all set up for daily driving, not much tuning done at all, as in i didnt play with box position, or seat position or anything like that. i just k…

I have a number of questions that I was hoping someone with experience can answer. I'm currently running a 15" BTL off 1600 in a 4 cube enclosure at 33hz. I feel like I don't have enough port area- i'm using one 6" aero which gives me 28" of port and 7" per cube. Do you think i'd have a noticeable difference by switching to a larger 8" port? I already bought the port, but don't want to destoy my old box if there wont' even be a noticeable difference. I'm hoping to achieve better lows...I figure that my larger port will give more output/peak at my tuning frequency of 33hz, hence giving me a better low end. In doing so, i'll also gain slightly more volume in my box (…

hey whats up im looking for some copper buss bars to be made or ordered or even shown how to make em, i need each of them to have 4 3/8 holes in them i need 4 of these i would like to run 4 runs of pos & 4 neg from front to back battery

Does anyone have the specs for the Fi BTL 15" subs. I am installing 2 of them for a customer, but he doesn't have any perameters for the subs. He is putting a Hifonics Brutus 2600 watt RMS d class amp on each sub. It is going to be in an old school s-10 2-door Blazer walled off right behind the front seats. Built for competition only, wanting to hit the biggest legal spl number at USAC competition. Any help would be appreciated. Thanks

hey im putting 4 l5 15's into my van but was wondering iwhich way i would be louder, if i had 2000 watts going to all 4 so it would b 500 a piece or just do 2000 and only hook up two for 1000 watts a piece , in my spl class for this year i cant exceed 2000 watts

i have 2 18" treo ssx's my box now is 9.99cf gross with a 100sqin port port is 4x25x21.5 deep after all dissplacements im at 7.68cuft treo reconmends 8cubes after dissplacment im doing a 150.7db at 34hz burp with 1 rd audio d9 amp but can you help me with my new box i plan on keeping it 8 cubes net but what can i do with the port to get more spl but still play low notes and keep it a dailey driver here is a link to treo ssx page click on the view specifications at the bottom of this page for the specs treo web site im running the amp at .5 ohms and this is a hatchback car im doing subs up port back please help me out thanks

What are the differences between the alignments QB3 Quasi-butterworth, BB4/SBB4 (Super-)boom box, C4/SC4 (Sub-)Chebyshev, EBS3 extended bass shelf -3 dB, and EBS6 extended bass shelf -6dB when using WinISD?

I'm in the process of starting a new install in my '95 Probe. Purchasing a DD 3500 series 15 and RF 1000a2 from a friend. Initially I plan on running the box he was using in his Explorer which is around 5cf. with 3 4" aero ports, can't remember the length. I'd like to build a new box to better fit the Probe, and I'd like to see if I can't get a little more out of the setup in the process. In the Explorer this setup has metered at 147.?db and I'd like to see if I can't manage 150. Any suggestions on box design would be appreciated. I'd like to keep it tuned low ~30-32hz.

hey whats up im new to spl, i have a 94 ford econoline van i have competed in spl for 1 year this is my first , and i love it, i have 4 l5 15's im puttin in a box, the box will have 13.3 cubic feet of airspace i do not want to wall but i want to be loud, i was thinking about sound deadening my roof and floor basically everywhere is it a good idea or no, i was also thinking about removing my middle row of seats, to let more air go by, any hints or tips on making a van loud without walling, or any tips on what i should do , thank you

I just need the basic rundown, what kind of materials, (do I just go to Homedepot and ask for resin??) how to apply it?? thanks!

Which one do u think will be louder audioque hdc3 15 or t3 audio tss 15