SPL & SQ / Fabrication

i tried using torres calculator from the smd forum, ya not very good at it. i have 2 sa 12s. and i would greatly appreciate it if someone helped me out. I have a 98 chevy blazer so space is not an issue.

has anyone here tried to build an 8th order bandpass. i ask because i have had decent succeswith the 4th and 6th orders but now im thinking of trying a 8th order just for spl and was wondering if anyone had any experience building one

Hello, I was wondering whether it was possible to use two different port length on a same box: For example I need 31.5 inch of port length total for 2 x 3" round ports. Can I make one 14" and the other 17.5"??? It's just that it is quite difficult for me to fit those two ports inside the box, outside would be possible but aestethically wouldn't be good. Thanks guyz, Kelvin

This is going to sound awfully newbish, because...well it is. I see all over this forum and various others about what to tune a ported box to. Well it dawned on me a while back, what does it mean if you tune a box to, ah lets say 32 hz? Does that mean that the subwoofer can only play notes above this frequency, or what? Also what particular specification(s) point you in the right direction on what to tune the enclosure to (besides the obvious manufacturer's recommended boxes, as I see a lot of people that don't necessarily stick to what the company provides.) Please go easy on me, as I am really clueless when it comes to ported enclosures (as I personally like sealed …

I need a wall built , anyone from Dallas/FORT WORTH area can build ,know wut they doing ? Let me know In a yukon xl 2006 . 4 -18's

anyone in here ever deal with Digital Designs or have a few M1 amps layin around?

Been awhile since Ive been on here but I Just purchased back my 2x 15" SSA Icon subs I first purchased around 11 years ago. I have/ had them in a 7.2 cubic foot box net tuned to 32 and it sounded great on the bass music and rap/ hip hop I used to listen to but not amazingly accurate/ punchy on rock, etc. Im looking to only use one of them in my 2010 Ram 1500. I currently have a 10" JL W7 in a sealed box in the truck and it sounds great and I love it but doesn't quite have the output Id like and planning to put 1 of the Icons in the truck. Im considering either Ported or sealed. I now listen to mainly bands like chainsmokers, club music, alt rock, heavy…

how many sheets of mdf would i need for a 4.25 to 4.5 cu ft box for two 12's and 2 cu ft per chamber and a 30hz tune going to build a box tomorrow so please let me know asap

Can anyone give me a fairly straight forward design for a bandpass box for two 5 1/4" woofers? I like the one i have, but it is uber ghetto (Current Box) I would like to have it peak around 28-30hz for chopped and screwed music, but maintain some punchiness on higher notes. Box size isnt really an issue, the one i have currently is around 9in tall, 4ft long, and 3ft wide. I like the style of mine, the way it is laid out, chamber, port etc so anything similar would be perfect (i might use a plexi top; If i do go with the plexi, i'm spraying the insides flat black). I will build it myself, out of 3/4" mdf and some bracing. Only requirements are is that it must be at most 12…

I have 2 sa15s and i'm designing a new box. It's a daily driver but i want it to be a very loud daily driver. i currently have a hifonics hfi1500 (pending upgrade) big 3 done, XS Power D925 on the way along with second skin coming. I'm probably going to go around 7.5-8 cubes after displacement and wondering which one will get louder to. If i go aeroport how big and long should i go. Any input is appreciated! Thanks

Ok, well I just got a newer vehicle (2001 chevy tahoe). After spending my limit to upgrade my substage, I had my alpine 9831 from about 2-3 years ago die on me. I am thinking I'll get a cda-9887 to replace is since it will be pretty much a drop in change, and I can save some of my older cables. I'm really not that happy with the eq it has, so I'm considering adding one in there. I've never done this before, and while I've been researching it everyone has a different opinion as to what I should look for, so any suggestions will be appreciated. I have been considering adding 2 sets of 6.5 components up front, so I can keep my factory look without a large pod sticking out f…

So I come today bearing questions... I have two ideas for a system and really am at a standstill and could use some advice. Both ideas will be forward firing with the truck sealed off from the front. My first idea is two 12's in a sealed box. Due to the fact that the max height in the trunk is 12.5in, I would have to tilt the sub back to make it fit, and for the sake of visuals, tilting them inward at the same time. I would prefer this setup, but due to limited resources, I'm not sure if I could cut any mdf with the angled edges required to achieve this. So this leads to my second idea... If I ran two 10in subs, I could run them straight up and down, and I could port them…

In anyone's experience, does it matter if the elbow of an L-Port is angled or kept at 90*? As far as sound quality or output is concerned.. It would be easier to build boxes with a 90* angle like that found on the RE box calculator. I've always used an angled elbow, as shown below.. It just seems to make sense, but just wondering!

This H2 Hummer was at the 2003 North of the Border Bash.. it got 143db in the SPL competition.. The guy doesn't compete.. he just wanted to see where he stands in the SPL realm...

I was wondering if anyone new of any good enclosure design programs, the only one i know of is term pro. I was just wondering if there were any out there that were better. I am trying to do some experement ing with some bandpass enclosures.

This is a goal to reach 150db tuned for a daily driver. I've been doin some measurements and have came up with a box design that has me smiling and this will be the last box i will build for the car... unless i downgrade later. This is my last attempt to try and reach 150db with a daily tuned setup and i'm crossin my fingers because this is only with 2 15s and 4,400w of power. Here is the wild design- Remove back seats, where back seat was, install a wall there sealed off from the hatch area. Now, i have 33" of depth from this wall to the back of the front seats. The box design would consist of 2 15s ported facing toward the wall. There is an 8" gap from the front baffle …

So I drive a f150 ext cab with a kicker cvx 15" with a 6 cube box tuned at 32hz. Right now it is powered by this POS sony 1200 2 channel. The first time I metered I did a 139.5 door open. I metered yesterday and the best I could do is a 137.2 The testing was done on a term lab. Now the things that changed: 4 ft shorter power wire than before - better bigger ground - better new rcas - better new bigger remote - I know this wont change anything just thought I'll throw it out there The only difference than before would be the temperature. It is roughly 35-45 degrees hotter outside now. Can the ambient temperature effect db?? Also my buddy metered too and he had a decrea…

would a port facing the side work in a 2001 eclipse hatchback.......its about a foot away from the panel if I were to face the port to the back ....the port will only be about an inch away from the back panel.... and I don't think it will have any air flow. if I face the port to the side .....will it practically be the same as facing it to the back?

can someone tell me what are the benefits or any of building a kefed box..they look good as hell but is all the extra work really worth it..jus wanted some opinions

I know this question has been posted before all over, but many of the discussions just turn into b***hfests, and no straight good answer is given. Would stuffing (polyfill etc...), or lining (vibration damper, mlv, etc...) a properly sized and well built box make any difference on the sound quality/characteristics of the subwoofer it contains? I'm looking for one good answer please, not a million random opinions. My head is just in a daze after looking at how many odd forum posts that don't answer the question I'm posing. Thanks to anyone who has good knowledge on this topic!

Ok I have a 99 camry and want to cut wall behind fold down seats to seal off from trunk my question is will this hurt structure of car I only need to cut 3-4 inches on each side and 1-2 inches on topp to get box flush

can I make a port in a shape of a L and still tune the box too 35 hz. your advise is need badly

I was wondering if you could send me the exact dimensions, that would be the best for the 12" BTL that I just bought from you tuned to 32HZ? The biggest size box that fits in the trunk of my Chrysler 300 is 32"wide by 35"long by 15"tall, that is the biggest size box that we can fit in there. If you could help me out that would be great.

I'm looking into building an enclosure that measures 34W (left to right) x 18.5D (back to front) x 14.5 in height. The speaker is going to sit on top, port firing back. This is an L port design. The port will be 3 inches wide. My question is, if I want to tune at 33Hz how long would the other part of the port have to be (the one that runs across the back of the box)? I used RE's calculator for my last box a few years ago and it couldn't catch the lows for nothing, so I know something is not accurate about that calculator. If someone could help me with this, I'd appreciate it.