SPL & SQ / Fabrication

It's for real

Hey guys. Looking to do my first bandpass 4th order. The reason for this enclosure would be to push all pressure into the cabin of a car through a ski port behind the center rear seat. I understand how vented and sealed enclosures are designed, however bandpass 4ths seem to confuse me a bit. I have searched and found many sources, but I get strange or mixed answers. Please help me clear up some things. I am looking for a transient response with good output. Hoping to get the lows in my passed frequency without sacraficing too much of the 60-80hz range. I have heared that the sealed portion will mainly control the Low Pass and the ported portion will mainly control the Hig…

Sup guys...we're having a compeition coming here on the 6th...it'll be on DBTV so check it out!! I won't be using my car...I'll be using a friends Durango. Going to use a Orion H2 15.2 and a 2500D. Basically building the system for this comp because that would never fit in my t-bird. I'll start posting pics as I build the system and will post results and some video on what I hit on the 6th. Any guesses?? I"m thinking low 140's....I have no clue what it'll do. HCCAfan are you currently running H2's?

I hope there are a lot of wall or has-been wall users out there that can contribute to this thread. I'd like to see some suggestions for wall users on increasing their spl potential. I am about to seal my wall up soon so after i do, won't be too much more moddin possible in that area of the car. I'm lookin for 155s hopefully. I'm wanting to stay in Modified 3 in MECA and i am assuming they'll qualify me for that class... I have a scion tc with a wall behind the b pillar about 5 inches back. I will be using 1 60A fuse for each of my 2 3500ds. I am wide open to suggestions to get louder.... I have yet to meter myself the MECA way but in the driver kick i did 151.7 clip-fre…

I have a 2000 Toyota 4runner.. Throwing in 4 old skool 15" ROCKFORD FOSGATE HX2. Sorry, I had to put the name in caps for respect!! Anywho, I got some measurements here... I want the box 40" (width from wheel well to wheel well) x 36" (length from back seat to back door) x 20" (from bottom to top). So measurements are 40"x36"x20", outside measurements (roughly 16 cubic ft) . Here are my questions... Has anybody had 4 15" subs facing down towards the floor and had rectangle port facing up? My reason is, if you look real close at my pic, you can see 2 6x9 Kenwwods bolted on top of box. Also, I usually haul wood and crap for my work and would really hate to get a sub busted…

So the Mag that is coming is going to need a worthy home in April's alero. I'm thinking: Shooting for 1.75ft^3, ported to 32hz with 18in^2 of port. Only going to feed her ~600rms @ 4ohm (Lanzar Vibe). Woofer in the rear corner, port running fwd and venting into the center, amp (the white thingy) frenched into the glass 'in front of' the port. Coo? -Nick

how is it done ? what am i suppose to do with the crossovers for ea. set of mids ? tweeters ? is there a diagram?

Just letting you local guys know April 12 is the crutchfield show in Harrisonburg Va. and there will be another show the next day in Charlottsville Va, both are 2x MECA shows. Ragnaroksq and I will be making the trip. any other SQ guys going?

to all the people in california this is the event you have to compete in this season! freeland is still trying to make a decision on where the south cali event is going to take place in its between castle park in riverside or at knotts berry farm!! i will keep you guys posted!!

I'm running 1 SSA DCON in a 2.3ft^3 ported box at 31hz, its down firing in a 02 GMC sierra on a Diamond Audio 400.1. It just doesn't seem to hit the low low notes like my last subs, I dont know if its because its ported and they were sealed or if its the Subsonic filter or what, just looking for suggestions. I can feel the lows and the port fires like a hurricane, I just can't hear them that well, it seems to be only below around 30hz, for everything else it slams, and seems to play everything accurately.

well the time is aproaching. '06 seasoon ends in 4 months and my senior year (and project) starts in about the same time too. I will be running in Street B, equiptment is as follows. OEM TC9 w/ Death Penalty Recone 15" Starting the season with a BX1205D and as i earn money (or if i save nough over the summer) and then i will have around $300 for another amp. I have a 2000 Mazda B3000 Ext Cab 4dr, Will be running either an Optima Yellow top of Blue Top. Set me a goal. I'll have a sticker made up saying "Powered By TeamSSA" and put it across my back windsheild if i hit it. My GF's Uncle used to be a part of Team Kicker and before that Team Roxfor Fosgate. He said if i wa…

now... this is my first wall that i will be doing. and i am not to sure on how to go about starting. i already have a cardboard mock-up of the false floor...but thats it. my car has alot of wierd curves etc, so im not sure how to exactly "measure" my deminsions. so how would i get a volume? i will need someone to design 2 ports for me as well. basically, how do i start? any info is appreiciated. its 4 DCON 15"s off of a sax1200 here is some pics of the rear. its going BEHIND the 2nd row of seats.

I am currently trying to make my doors more rigid. I was going to use 1/8" thick aluminum bars but I do not want to weld them to my door skin as I will have to repaint my car. I was told I could use pl premium but I have no way of clamping them down for 24 hours. Here is my solution I was going to just coat the inner skin of the doors with multiple layers of fiberglass. To get this to stick to the skin I am kind of clueless. Would sanding the door with a heavy grit prior to fiberglassing be enough?

I'm designing a box with the help of the torres box calc and sketchup and was wondering if anyone had any suggestions or if this looks right. I believe I included all necessary dimensions, but if I forgot any let me know. The subs will be mounted on double baffle up top, with rear facing port. Any help/suggestions/comments are appreciated!

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. So I keep hearing different things from different people. Maybe some people over here have some decent advice since im not getting it else where. So I have a DD3512. DD recommends 2.5cu ft ported at 40 hz for their enclosure. Some of the local guys here who run DD say NO. that I need about 4cu ft ported about 36-38hz for one DD 12. Then another guy I was talking to online who tests TS parameters and sub on a daily basis says that the 3512 can play great in a box down to a cu ft. but is good in about 2-2.5cu ft ported at about 34hz. WTF?! All these dimensions contradict eachother and I know DD isnt a super woofer that can play in anything so someone help me out …

I would like some input on building an enclosure for 2 ZCON 15D2's. The max cubes available for the box is 7(3.5 per sub) after displacements. I want to tune at 31hz. I have seen the recommendations SSA's site for enclosures but would like to have some outside information on how well these will do in 7 cubes . They will be running off a SAZ3500 at .5ohms. Thanks.

My current box is 36"x16"x28" tuned @30 for 2 icon 12's.slot port.My question is would I benefit from building a new box with the port centered between the subs and fire the port thru the rear arm rest.Back seats don't don't drop down.98 pontiac gtp.

Well, i just did some testing with about 30 songs and frequencies from 27-55hz individually with positioning a ported and sealed box around in the hatch to determine what sounds loudest to the ear. I only faced sealed forward, everything else is for ported. This test though is with port and sub on same side. I have a sub up port back box but no sub to fit it, lol Sealed firing forward, right behind rear seat - Basically everything just drops in output. IT all sounds the same, just quieter so that definitely isn't recommended. Fire rear, box against the back seat- the mid range 50-60hz seems to hit hardest by doing this but not by much more than firing directly forward! …

98 Pontiac gtp (1) SSA ZCON 15 BC2000D for power Have big three done in 1/0 welding cable same for power and ground 250a singer alt 36"W X 15"H X 28"D is my max space to work with Thinking I want tuning around 35hz slot port All opinions are appreciated Let me know if I left anything out Thx guys

As the title says, has anyone ever built a steel enclosure? Does it sound any different? Just curious if its been done, if anything was gained, etc. This is more geared for spl

I just picked up a NIB sw9122 and all that was in the box was 1 page of the owners manual and the mounting hardware. So I need to know what works good for a ported enclosure? How many cubes, freq., and port area? It will be running off a Audio Art 100hc, so in the neighborhood of 1000W. I am thinking somewhere 2-2.25^3 ported to 32hz but not sure on port area, seems this sub will move a lot of air.

Well I sat down tonight thinking I have most things ordered, I may want to double check my trunk space. I re measured and I was off a few inches on the height. My trunk space is 40W by 42depth by 18 high. This will give me about 14.07 cubic feet of total area. Now if I were to build a box and have it exactly 6 cubic feet with an external port to save room this would leave me with 8 cubic feet remaining. I have a feeling I may not have enough air flow to keep a 18 BTL in the trunk ($^%@). I do (i think) have enough room to store one but I would be starving it for air. I measured one of the seats and its about 2.5 feet by about 4 feet in height. I could lower the back to al…

So after using the Torres' box calculator I have come up with these panel sizes Sub diameter: 14.125” Top: 33 x 16 Bottom: 33 x 16 Sides: 15 x 14.5 Front: 33 x 15 (double baffle) = .21cubes disp Back: 33 x 15 ________________ According to the calculator I am left with 3.55 cubes for a sealed enclosure... Does that sound right? The lumberyard near me said they could make the cuts for me.... Any quick and calculated responses are much needed... Thanks -Danny

Im getting some nice port noise with those 3" 90* PVC elbows in the SE enclosure. I was wandering if it would be worth it to swap out the face and put in a slot port instead of thse 2 3" Aeros ? If so, would anybody be willing to help me with the port. Only things i suck at are ports and alarms external is 29(w)x17(h)x9(d) Id like to do an L style, but if thats not possible labrynth is just fine. SE depth is 6 3/4" Tuning: low 30's ( if possible)