SPL & SQ / Fabrication

First-the enclosure specs for 15 inch xcons have a standard and optimal size. What are the key differences in the two? Also-I had to sell one of my amps to get through a hard time. My question is, powered by a fosgate t1500bdcp amp, should i run one sub ported at 2 ohm or both of them sealed at 1 ohm?

I posted this over on SMD, I figured I'd put it up here as well. So I've been wanting to experiment with a series tuned 6th order bandpass design for quite a while. A conversation I've been having with another SMD member has finally motivated me to proceed with this experiment. First a little background. You don't see a lot of series tuned BP6 boxes out there and there is even less information on how to design them. What I have been able to find has mostly been conflicting information as to if and how the tunings for the different chambers interact with each other. Some info said they don't interact all all, some said the rear chamber will be tuned lower than …

How much port area you think would be best for 2 18" zcons. . Will be in around 16 cubes in a b pillar flat wall on about 5-6k rms

Non-Wall. Single Cab Chevy. 2 db Drive K9 10"s. 1800w Non-Wall. Dodge Nitro. 3 db Drive K9 12"s. 1 db Drive A7 3500. Walled. PT Cruiser. 2 Fi N3 18"s. 2 RD D9's. Same PT, Non-Walled. 2 SSA ZCON. DD M3a Walled. Isuzu, 6 RF T2 15"s. 3 RF T2500bdCP's..... Loudest Rockford Truck Known to Exist. More Videos of this truck in the 1st reply. I'm new to the Sketchup thing, never really did it before until this week. lol So be easy on me. …

Here is the quick rundown: 4 Soundqubed HDS300 FS 33.65 hz QMS 6.912 QES .769 QTS .692 VAS .782 Ft3 Outside dimmensions of box: 16.3"x41"x27" = 10.44 all setup in a common chamber Port size: 8"x40"x65.88" @ 30 hz I believe this is all correct but what a double check before I build this box. Thanks

Final thoughts before I start building this for my sealed trunk wall? I am going to be putting in a Zv4 15" running on a BE.2500. Will it be alright for the total port area to be 12 in^2 more than the recommended? Thank you.

Hi, Been out of the game for a bit after selling my system, 2x15" SSA Icons in 7.2cubes net 32hz on Crescendo BC2000D. Anyways Im picking up 2 12" SSA Xcons for a crazy price and want to put them in my 03 Dodge 3500. I only want to lose 1 seat so dimensions are a bit tight. 32" tall x21" wide by 25" deep. I think I can get around 5 cubic feet net, (may be able to gain an inch or two on depth) question is how much port area should I aim for? They will be ran on low power, JL JX1000 for now so only 500rms each. Probably wont be adding much more as I dont have the money for electrical or space. if I aim for 70+ and around 5 cubic feet would that be ok? Thanks, Codester

Im going to be building a sealed trunk enclosure. I have a Zv4 15 that will be firing forwards. The amp will be a BE.2500. I need some advice on how big the box should be. My max dimensions are 15.5 tall 42 wide and 36 deep. I would like to use an aero port instead of a slot port. How wide and long should the aero port be if i wanted the tuning frequency to be at 30 hz? Also, if im going with an aero port, does that mean the box size doesnt have to be as big to accommodate the slot port? To get the 68 in^2 port area would i need to have two aero's or could i get away with just one? Any help is appreciated.

I apologize for asking a question that has been asked plenty of times before, but I couldn't quite find the answer I was looking for. I have an OBS Tahoe with 2 18s, subs up ports back (4 aero ports along the bottom). I need to secure the box to the floor, as it's shaking around pretty badly. My question is, is there an optimal distance to have between the end of the port and the trunk lid? I've read where people just say to put it at different distances and just try it out, but this is no help to me because A. I don't have a termlab and B. the box is moving so rapidly that it pushes itself away in a few seconds anyway. I'd rather not drill holes through the floor until I…

OK, so I am hoping that some box building gurus can help me stop pulling may hair out trying to decide on what box design and subwoofer choice I should go with. As you know, the Toyota MR2 is a very small car with not much room behind its only 2 seats. It is mid engine, so the trunk in the back is of no use to me for subs. they must go right behind the seats in a wedge style box. Here is an MR2 and a pic of the space behind the seats: So I listen to all kinds of music literally, well maybe not country so much, but lots of stuff. I want it to sound musically nice but definitely want to produce as much SPL or should I say """SQL""" as possible if s…

Hey guys, got a huge favor to ask, i'm doing my first build for a customer, for a neighbor, for an Icon 15d2 in about 4cubes @ 28hz forward firing in a 01 deville What should I shoot for for port area, and have any of you done forward firing setups in a deville before? I'm tryna make a good impression lol. We're going to carpet it to match the trunk for a stealthy look, well, as stealthy as a ported fifteen can be lol. It'll fire through the ski pass. I guess I'm super anxious about it since building for yourself you never have to worry about an upset customer, you just rebuild. Thanks in advance. Edit: It's for a blend of all types of music, and the mids and highs are t…

So my game plan is to do 2 twelves facing front with port facing driver side rear fender area. The box width is going to be just wide enough to accommodate the subs so a little more than 25" but would it be better to have the height about the same as the subs or would it matter, in terms of SPL? If it's around 13.5" (internal height 12") then I wouldn't be able to stack the 4" aeros. If it's 15" then I can stack them but to me, I feel as though the more streamlined shape of the other box would allow for higher SPL. The taller enclosure would be shorter on depth too, obvioulsy. I could also just be thinking about this way too much but whatever

Currently running 2 HDS 215s (600rms, 15 inch) subwoofers in the back seat of a mustang convertible. Not much of an improvement over my previous Sundown E-12s. The problem I believe is the box. being obviously small to fit back there. Around 2 cubes per sub. Would I be better off getting a new box to put back there, say the QBOMB15VL where there is 3.85 cubes (4.2 total) for A SINGLE 15 rather than my 2 15s now. Also found on ebay a 4.0 box (5.33 total) tuned at 32hz. Also I could upgrade the subwoofer to something that can take my 1700rms amp better. Any help appreciated.

So I hate posting help ? On here but here I go again....can some body help me find how to bring down my box rise I will like to get as close to 2 ohms as I can....right.now I rise to 3.5 and I was searching on here but cant find nothing...I no bracing and better airflow accounts so I just need to be pointed in the right direction thats all

Probably a horse that's been beaten to death, but I've still got a couple questions. First off I guess the equipment in use would be a good place to start. Two Skar VVX V2 12s and a Synergy Audio WFO 15.1 amp wired to 1 ohm in the trunk of a cavalier. Listen to decaf, rock, and country so musicality is a factor. Only have one VVX in the car right now, so building a new box and deciding to forward fire and seal off versus rear fire is kinda where I'm at right now. I've never heard a sealed off box so don't have anything to reference to also. My gut feeling is sound quality would be better, especially on rock, it would meter well if sealed off properly, but would lose some …

Today I purchased 2 kicker L7 12s and a rockford fosgate prime 1200. Can someone help me with a design for my 1998 s10 extended cab, my max dimensions are 46" wide, 22" tall, and 13.5" deep would like it tuned @ 33 Hz. Any help is appreciated

Rebuilding for my home music room, plans for the box are 7.5@26hz with 120sq in of port, 3/4" mdf, double/triple baffle (haven't decided) 1.5 all around, sub forward port forward, on spikes. Woofer is a FI BTL 18. I like Decaf and DJSNT, chopped and screwed, etc. Anything you'd advise me to change before I go and pick up wood? On 500rms for now, intend to pick up an EP2000 down the road.

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

Has anyone done a build in a newer camaro?

I have a great interest in the science of box design and I've seen several examples around the 'net of folks building high-power series-tuned 6th order bandpass boxes for SPL purposes. One common design theme seems to be to purposefully undersize the rear port, the reason given is for "cone control". This appears counter-productive to me because the frequency where port velocity will be the highest, and thus having an undersized port will have the most effect (whatever that effect may be), is at the tuning frequency when cone excursion is at a minimum anyway. It seems to me all these guys are doing is making a 6th order bandpass that becomes a 4th order basspass with a…

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

So I get through most of the sketch up of a new box and it hits me... My port is 6" wide and where it ends is 6.75" away from the wall of the enclosure. Even though it is more space than the total width of the port, I assume it is close enough that it will effectively create another bend in the port and add more length than I want? It's late, I'm tired, and I think I just wasted the last hour. fml I am curious, at what point does the port end and the perpendicular wall change port length? How close, or far do they need to be?

Well, here are the components to the dream build. Just finished the last one up last night. (2) RE XXX 12" OEM coil 1 stiff, 1 soft spiders Original full face dust caps Amps MMATS HD4000.1 MMATS SQ4100 Speakers: (2) Sets of Infinity Kappa 6.5 components Electrical: Singer 250A 3 runs 2/0 Duralast platinum(front) (still needing rear batteries) Vehicle: '04 Pontiac Grand prix Enclosure talk: I have experience with this driver in different sizes, and had always had good results with the enclosures for them. Haven't done a multiple woofer set-up for almost a decade, but this is what I was thinking.. 4.5 cu. ft. L port, double baffle, window bracing, 45s Go…

I have a 12" fi Q that is fully loaded, except there is no extra spider option, and no high qts option. I also have a Sundown SCV-2000d, big 3, XS Power d3400, and an XS Power XP950 in the trunk for power. I figure after all losses/drops I should be getting around 1700w rms of clean power to the sub. For mide I have 2x 6.5" Sundown Neo Pro V2's and some Image Dynamics CTX65SC's for components up front. Hopefully having some dedicated mid bass drivers will work well with a bandpass enclosure, so that I can tune that to hit the low notes and roll off right into where the Neo Pro's will take over. Lastly, It is being installed in a 2013 Subaru WRX. After some deliberation I…

Do any of you know what software 'HexiBase' is using to make his enclosures? https://www.youtube.com/watch?v=5VFx37kz5Ww It would be awesome to have a bit of a play around with it to see how my current system stacks up. Thanks in advance