SPL & SQ / Fabrication

hey guys have 2 18" smd subs, have xtra cab f150,trying to do NW have 20d x 24h x 57w so i have 11cuft = 5.5 per sub,trying to get into the 50's but i cant seem to get there, any help appr.I have interchangeable port spl port 17x 13 thats the biggest i could fit, subs up on passenger port up on driver,double 13 ply birch all of box,running stetsom 7k2d 4xs power batts (2700's) 1 h/o alt ohio gen.4 runs 0 gauge 2 pwr 2grnd to the 3 batts in rear,should i just go for the wall? i'd get about 20 cu ft. SSNW1-2. ANY HELP THNKS

I have an 02 mazda protege sedan I'm planning on making a custom kick pod out of fiberglass for my front doors. I'm going to put my hertz mlk 165 (6.5'') midbass component drivers into the kick pods. Will be ran off of an eclipse EA4100 amp bridged to 150w x 2 (for now) I like listening to rock music with a lot of bass around 80 hz. My sub is a dc lvl 4, ran off of a sundown sae1200, Right now its in a ported box tuned to 32 hz, but I'm probably going to be building another box sometime (idk what kind) what type of enclosure would be the best encolsure for my midbass drivers? I can make a sphere-shaped enclosure; does shape matter for a sealed box? while we're at it, what…

Dont know if i need to brace this box or not. ANd if i do how should i go about it? edit:

Hey guys, I'm goin g to try and build a glassed back dash to hold my mids. I was wondering if someone could give me any tips and mainly what I will need to do this. I've heard fleece, resin, and hardener. But which ressin and Hardner should I get? If I use wood to build the base should I use like 1/4 inch mdf or does it matter. Anyway, I wanted to get some of the materials today so anything will help. I'm going to look for a jasper jig so I will be back. Josh

I started a wall and need to know what to tune the box to... Any help would be greatly appreciated.

Memphis doesn't carry them in their site. Did some searching but only came up with the subs or some other t/s parameters . I doubt the place that sells them here will give them up cause they make boxes. They are kinda like that. They gave me recommended optimal. The port however doesn't make sense. I used Torres calc. To do their recommended port size. It's way too small IMO. 4ft^3 for two 12's with a port of 12x2.5x19long which tunes it to 28hz. I wanted to get what the actual T/S parameters are so I can get an accurate idea of how to build it.

Hi all, I'm designing a custom boot for my car, what is the best way to place 2 x 12" phase aliante subs in a boot? I was told the best place would be one on each side (one on left side and the other one on the other side). and I would love to do a fibreglass job something like this: but on my car would be 2 of them..so one on the left and the other on the the other side. what do you think? or is it better to do something like this (which one is better, sub firing the front of the car or the rear)?:

Hey I need to. Build a new box. I have mangled one of my subs so I need to down grade to one sub. I'm wondering if anyone has Term-pak. I just need a basic box 2.5 cu/f with big port tuned 31htz if someone could run the numbers for me it would be greatly appreciated. I really miss my bass.

I have been pondering on what to coat my wall with. I was originally going to go spray paint but motha f that. I want a plasticy rubberized coating on the box. My friend suggested herculiner. Have any of you had any experience using this stuff? Is there something better that I can use that will work good?

ok so i believe my sub box is about 1.08 cuft or very close to that. if i was to add this kit here... http://www.madisound...products_id=711 you think that would fit my application? in order to get 34hz with a single 3" inlet im going to need a "13.06364" long tube. if i got this kit i could cut it to length? what do you think? with a box of that amount of cuft do you guys think i should tune to a different setting aswell? let me know what you think!!

I have an '04 focus Sedan and I want more midbass. I currently have some walmart pioneer 6x8s in the doors but I just bought some MLI65s and some peerless 2" fullrangers and I figured while I am taking the doors apart I should probably fix the giant holes. My doors look like this: http://www.reversestress.com/other/FocusDoorb4_293.jpg. Well not exactly, mine are red and they still have a bunch of foam on them. But anyway, my midbass sucks. How do I cover up these holes so I can better separate the back wave from the front wave? Oh, and I just bought an SAX100.4 to power them.

Want to build a series-tunes 6th order for a Single Fi Car Audio SSD 18. Not sure where to start I know 6th orders are more complex to design and more of a trial and error build but if I never try it out I will never learn. So of course the goal is to successfully build a 6th order but depending on the final results if it does not meet expectations there will be adjustments. Also if non of the revisions succeed I will fall back on a standard Ported Enclosure . Please if you have any useful information on 6th order designing/building It would be awesome if you can share them with me . Thanks in advancez max dimension - height 30” - depth 21” - width 38…

hey guys i need some help figuring this out.. i have a box with a slotted port.. the port will be 15.5 tall and 4.5 wide the question i have is how deep does it need to be? i want the box tuned to 38 hz the dimensions are 17x30x25.5 (HxWxD) for a total of 5 cu ft im waiting for this i have all of the box cut and ready to be put together other than the port.. btw this is for a mach 5 spl-15 i'll get pics of everything when im done too

So the plan was to build a trunk box that was larger with more port area than the box I had previously but I ran into a bit of an issue much too late in process.... After we finished the box, I tried to slide it into the trunk. Didn't fit Damn you Corolla and you're itty bitty trunk opening. Inside of the trunk would have fit it fine but it could not be fit through the opening. Sooo, I have another backseat box. LOL It sounds insanely better which is a plus, but I guess i still fail a bit in the end. It'll do for now... 4 cubes @ 31hz, 18 sq inches of port per foot. Tell me what you think. (Besides telling me it needs to go in the trunk )

NEED SOME HELP DESIGNING SYSTEM FOR 99 DODGE QUAD CAB, HAVE A FRIEND WITH CHEVY EXTENDED CAB WITH 2 ROCKFORD 10'S UNDER THE BACK SEAT AND SOME OTHER SPEAKERS IN THE FRONT DOOR PANELS. HE HAS 2 ROCKFORD 1200 AMPS, THIS THING ROCKS BETTER THAN ANY I HAVE EVER HEARD. I WANT MINE TO BE AS GOOD. DONT LIKE RAP OR BOOM BOOM MUSIC, WONT TO ROCK WITH LOTS OF BASS AND MID RANGE, METAL MUSIC COUNTRY AND CLASSIC ROCK. WANT TO USE ALL ROCKFORD FOSGATE STUFF, ANY SUGGESTIONS??? PLEASE HELP, THIS STUFF IS DIFFERENT THAN A SUPERTUNER 3 WITH 200 WATT EQ.

Hey I want to build a ported box for 2 12" SDC2.5s, but I've never built a ported box....and it confuses me On the Audioque site it says each sub should have 2.5 cuft and that includes the port and sub. But what should the port length, width etc be? I've searched and read up on a lot of stuff and other peoples' builds, but still am not sure what do.

alright i went active last week and blew my tweeters withen about an hours play time.... maybe too much power.. maybe i had them crossed over wrong.... 100.4 sundown amp... 1st model and these ar4e my trweeters... http://www.madisound.com/catalog/product_i...roducts_id=1466 where should my settings be?

This will be my first show in over 2 years by this time! Last event I was in was the 2002 SLAP Finals where I was 4th. My system isn't designed for dB Drag so I will be outclassed a bit, but it will be fun to get into the lanes again. Here is the link to the show if anyone cares:) http://www.termpro.com/asp/members2.asp?Who=13&MemberID=6498

Alright I think I'm going to start competiting in MECA. Sort of confused on the fuse rating thing though. Anyone wana help me see what class I would be in? I would like to compete in AS or Drive By. I think I would do better in AS to start off with. The local state record is 144.2 and thats AS2. Should I have a problem with that? Also one other thing. It doesn't say that I can/can't have an upgraded alternator. Should I just not put it on or go ahead and put it on? Not sure what to do in that situation. Also it says no resins or anything. Does that mean in the box? I can't coat the inside with resin? What all could I do to help get the dBs up? Thanks for any help. Mike

Just made my first go at this google sketch up and was wanting some feed back to see if i need to make any corrections i'm building for either 3 fi bl 12's or 3 psi platform 2 12's heres a pic of what i have came up with so far

Im starting my build in about a week or so and i narrowed my design down to two options. The first option is to have the sub up firing at the rear deck with a kerfed port(s) firing back or sub up firing at the trunk lid with a kerfed port(s) firing into the cabin. after doing a lot of searching i see a lot that like the sub up port back. The reason i chose these two designs is because i cant do both sub and port back or sub back and port to the side. Which option would yield better results? I also its vehicle dependent but my box will have to be build inside the trunk so moving it around is pretty much out the question

well tomorrow my third rl-p 18 should be here, so now i need to start doing some box planning. i have an isuzu rodeo (suv) with the back seats ripped out. im going to use the whole back portion to build the box. its not going ot be a wall though. my question is what size and tuning should i do for all three? i see the recomended 5 cubes at 27 hz for one, but im not sure if it would change for all three. by that i mean, would the optimal size be 15 cubes at 27 hz? maybe im overthinking it but it seems ike it would change due to there being multiple drivers in the same box. also, i know i can fit the box in my suv, but porting it back may not work. my back window angles in …

Can someone check these calculations? Height:20 Width:38 Depth:14 Port Length:25 1/8" Port Width:3" These are externals. Thanks for any help

I'm just looking for some pointers on where I could look for reputable information on designing 2 way passive, 2 way active and (after some practice) eventually 3 way active front stages. Just stuff like, what to keep in mind as far as driver selection, particular features to look for when choosing a certain driver, and how to design passive crossovers. I was daydreaming and hit a roadblock when I realized, what the hell do I even know about a quality front stage? I can't say much at all, other than, deaden, and airseal the speakers. So I feel like it's time to start learning, might even have some applicable tips on hand for when the new truck is ready I'm plannin…