SPL & SQ / Fabrication

I've been trying super hard to get my box calculations right. Can someone confirm these #'s?? I really hope I'm on the money. in advance. Box is 32" tall, 15" deep, and 18" wide. Port is 16.5" tall (internal), 2.25" wide, and 40" long. Looking to be 31-32hz, 2.25cu.ft. after sub and port displacement. :fingers crossed:

So, as you guys know, I'm an SPL nut. But as of lately I'm getting pretty tired of the completely bone stock setup in my daily driver. I had been talking about doing a nice install for a while, but frankly don't really know where to begin. I was talking to a buddy of mine (former IASCA SQ competitor), and he was talking about doing some A-pillars with 3" mids and tweeters and then doing some 7" midbasses in the doors. Frankly, I have no idea how that would work or what equipment to look at. I even thought about just going basic with some nice components in the doors (tweeter and 6.5"), and then maybe getting a little fancy with some 8" woofer kickpods to go along with a…

right now the wife drives a 01 accord coupe with a single RE REX12D4 off around 200 watts from a RF 300.1 in a 1.5ft^3 box tuned to 35Hz front firing right behind the back seat. would it hit the lows alot better or have more output if I were to replace it with a SRX15D4 in an infinite baffle setup off the same amp? I know Id probably end up lowering the gain seeing as that SRX might not even handle 200 watts in an IB setup. and another idea, what about just using the REX12 in an IB setup since its already in my possession?

I've heard of people blocking off the rear cabin vents ( behind the vent caps) to gain loudness in the cabin anyone here dine it or does anyone know if it works because with my system turned up if you walk to the back you can here a farting noise coming out and also you can feel the air coming out

Ok, well My trunk openings are garbage, my trunk is HUGE but, I can't get a box inside the trunk from the rear or from the back seats. So, my only 2 solutions are this. 1.) I lay down plastic so I don't get anything in the back of my car, And I pre-drill the screw holes and put the box together while it is in the trunk. Only problem i see with this really, is the internal piece for the slotted port. 2.) I build the box split down the center, having a top half and a bottom half, which would be Biscuit jointed or using dowels and thenglued together in the trunk, and then over the joint external strips would be screwed into place to hold the joint together. Both of these are…

i am building a sub box for a m3. it will be in the spare tire well. the box size that i am shooting for is about 0.5cu ft after sub and port. the cubes i am using i got for sundown audio. i am just looking for a nice sq sound. i am not sure where to tune it but my best guess would be 35hz. i am looking to go ported and need the port size and how long the port should be. i'm only running about 300watts.

I built my box today it is around 1.75cuft and I went ahead and sealed it. I took a old circle port out of a old box I bought and it is adjustable! I was like holy crap.. anyways I believe it is a 4" port and it adjusts from I believe 4 inches in length to around 10-12 inches. What would the length of the tubing need to be for lets say.. 30-32hz?

say you have a box with the cuft you want to port it with but this box has a reallly strange shape will that change the port size,length, or anything at all? its going to be for a ssd 12 the box has 2.12 cuft going with a round port

I would like to know if you see any potential problems with mounting a peerless 6.5" mid bass speaker "in" the door pocket of my 2000 ranger. I currently have jl audio xr 5 x 7's (coaxial) in the stock location in my doors. They image like crap ( no real surprise there, a lot of the time it's behind my head or at my feet ). I've been playing with some T.B. W3's as well as some FR 88 ex's on the dash by the a pillars. I like the sound of the fr88's and am going to try going without tweeters. I also bought 2 peerless 6.5" sls mid bass (830946), which I plan to put in the stock door location (red square in pic) to see if like them. If I do, I plan to get 2 more 6.5's …

I need help making a 2 4in port box enclosure tuned to about 33hz. can anyone help?

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 …

I'm looking for two tens to put under my back seat, can anyone give me suggestions on subs and who makes a good box for my 2010 silverado. I would like good SQ.

I've decided to build a box for my 15" SSD that will fit in my trunk. I was wondering if these numbers sound right or what it really should be. Lol Box will be 28" wide, 17" tall, and 22" deep. Port is 3.5" wide and 21 inches long. Looking to be around 4cuft tuned around 31- 33hz Does this sound right?? If not help is very appreciated!

Hey guys, trying to get an enclosure made for me, but im not sure where to start. the jl stealthbox (http://mobile.jlaudio.com/products_stealthbox_detail.php?fit_id=1620) is exactly what i want, except i dont want the w3, but they wont sell just the enclosure. Does anyone know someone who could make something similar for me?

Long story short, Everything is brand new. I have a 12 RE Sex that I built in a sealed box. The box was to big after I was done (1.66) so I packed the back wall with 2x4. Well after I had installed everything I had local shop try to tune the sub. They agreed it was missing the low and just had no balls. They suggested we use the same box and port it. Re specs for min port box is 1.5@35Hz. They said we could use the same box as it is 1.66 and they ported it using 3 inch pvc tube that was 7 inches long. It was night and day but I would like to get others opinions since I have put a lot of time and effort into redoing my entire audio setup. Here is my setup: Truck: 05 Ford F…

Good morning. I would like to help build a garage door: number two mount sub woofer 15 " box with dimensions width 96cm height 38 cm depth '51 internal dimensions of the box 185lt. transmission characteristics of the sub woofer: maraca: Ciara MOD: 395A http://www.ciare.com/pdf/catalogo/CS395A.PDF someone can 'project box to send only two sub box with a door? thanks and goodbye

Yeah i know i haven't posted in a long ass time.. However.. So i finally got the Navi goin a while ago and sold the town car. I kept my same box i had and just threw it in after i reconed my MT's. So needless to say 10x louder in an suv than in a car. But after a week or so off playing music i start to notice rattles and squeaks. So a few days later the bass just isn't hitting. So I go back to the box and see this... Thinkin to myself dam, i might need to start fiber-glassing the inside of my boxes lol. Funny thing is i can listen to my music all day up loud but passengers seem to have sensitive ears..on the broken box at that. lol 2 18" mt's 5k watts btw 150's im hopin …

so i was told my wall was too big, lol which it is 16 cubes for 4 12"s, but beyond that, we still get a solid 152 on 1900 watts clamped, looking to gain fairly large numbers (1.5 db) without increasing power and withing 2 weeks lol. but i was told about a rear loading wall, the guy told me that he stumbled across putting a "wall" inside the wall that has around 2-3" of gap between the edges and was at a slight angle, claims to have gained him 8 db (i doubt it, but he has all the equipment to know what he did and how much it gained). what do you guys think of this, all i can think of is that is sounds like a bandpass with some sort of a horn effect to it... im not sure…

So As I've been tired of looking at how my subwoofers look,(well the looks), then I've decided to make a custom ported box...only difference I'm going to fiberglass it so it's not going to be cubed anymore...so I'm trying to find out my volume so I can calculate all the port things...

Hey guys. I recently completed my build using an IA DR12 in 2.2 cubes at 31 hz. My port area right now is 25 in^2. I do get a some port noise on the lower notes in some songs. I was just wondering if I should rebuild a box using more port area. Just not sure if it would make a differance or not. It gets plenty loud right now, I just have had a "what if" idea in my head since I noticed it. Any input would be great. Thanks Tony Nelson

Sorry for being a thread whore tonight guys but I got a chance to really sit down on my laptop and do stuff and not work through my phone. ANYWAY Question: Can there be a certain tuning for a sealed box depending on size? IE: If you have a 1^3ft box sealed, and a 2^3ft box sealed, would the frequency response be the same with both boxes with the same driver? I've always wondered if there was a way to get a sealed box to produce lower frequencies with a good amount of output without having to port. Pretty much every sealed box I've heard peaks around 45-60hz and doesn't hit lows (35hz and lower) well at all. I didn't know if there was some kind of formula or concept that …

Ok guys, I was looking into a few stats on bench testing, and noticed that amps wired to ".5 ohms nominal" could see up to 1.5 ohms in reality. So, with that in mind, I read into box rise and all that good stuffs. I was just wondering, If I skip terminals on the box altogether and run wires through a small hole (that would be sealed up after of course) or out through a port would this help at all? Or would the longer length of wire just defeat the purpose? Thanks in advance, as always.

Hello all, i have a question about a box design, i have always had beat in all my cars but i have never built a box before so this is going to be my first one, and i was wondering if this design would work or not, its going to go in a 96 blazer. thanks alot

I'm looking into buying a Soundstream xxx18 and i have a few questions. First of all, here are the specs from the website. SPL Tuned Enclosure XXX-18 Min. Vented (ft.3) 4.00 Port (dia. x length) (4) 4x15 Fb (Hz) 49.91 F3 (Hz) 43.54 Opt. Vented (ft.3) 6.00 Port (dia. x length) (3) 6x13.5 Fb (Hz) 50.00 F3 (Hz) 42.71 Max. Vented (ft.3) 8.00 Port (dia. x length) (4) 6x12 Fb (Hz) 49.84 F3 (Hz) 42.24 Low Tuned Enclosure XXX-18 Min. Vented (ft.3) 4.00 Port (dia. x length) (3)4x18 Fb (Hz) 39.97 F3 (Hz) 36.81 Opt. Vented (ft.3) 6.00 Port (dia. x length) (2)6x22 Fb (Hz) 35.00 F3 (Hz) 32.18 Max. Vented (ft.3) 8.00 Port (dia. x length) (2)6…

okay guys im making my brother- in-laws box and i was cutting with a jigsaw and made a little curve by any chance do you think it will be okay because you have no clue how worried i am about this i mean i want to do it right but i just hope i didn't mess it up if anybody thinks it's fine just send me a p.m or just put it on here because i really REALLY need to know......