SPL & SQ / Fabrication

hi, what is the rule of thumb for port tuning to gun for in SPL install? 45~48hz? cheers

This guy is nuts. Many of you have probably already seen this but it was my first time coming across it... Dodge Sprinter

looking to do a wall with 4 AQ HDc3 15's and 2 IA 40.1's and need some plans drawn up for a 88 civic hb for bass race and db drags. If there's someone on here or if you have some contact info for some one please post it up as i would like to disscuss dimentions and price of the plans. Thanks mel P.S. I won't be on here again until mon.

im currently evaluating a couple of designs for my setup and this is one of them i would love to get as much feedback on this as possible. it will be in a 95 single cab dodge ram.

Short notice. Saturday August 9th! Xtreme Sound Cruise-In and Competition. 1701 Queen City Avenue Cincinnati, Ohio Registration begins @12noon... I'll be there with my TL running the SPL portion. We'll be doing a StreetBeat style, and a headrest SPL style... as well as cheap re-runs... -Noah

I am using CAD right now to try to make a 3d design of my box. My question is if it is an 8 cu ft. box before displacement with external aeroports, what kind of internal bracing am I going to need even with a double baffle? This is getting a fully loaded 18" BTL by the way, with a Sundown 3000d. If I use 3/4" MDF will I have a problem with too much flexing? Also one question this is my first build, first system and I want to know what your guys preference is on MDF from different suppliers. All I really have around here is a Menards and I work there so I can get a small discount on it there. I just wondered what you guys think of the quality of Menard's MDF compared to ot…

Is there anyone out there that custom builds subwoofer enclosures to spec in the Orange County, CA area??? Please let me know! Thanks!

Besides the obvious, what is the difference between front fire and down fire enclosures? Is it just a prefrence issue or is there a sound quality difference?

I picked up a tdx 15 dual voice coil 2 ohm for $100 in a pre-fab box. 1200 watts rms. Hooked it up and found out the box is broke. It sounded like Donald Duck getting kicked in the nads. I would like to build an spl box for it but after googling my fingers off I can't seem to find any box spec recommendations. I was hoping to find a simple slot port build or something because I am still a noob and don't quite understand the Qs's and the other mysterious letter number references on the tech sheets Any ideas or opinions would be appreciated. I prefer spl over sq.

Ok, so I float around a few different forums and everyone has something different on the subject. Could someone please explain port loading? Why would you want have the sub in different locations in relation to the port? (close, far, centered on the face, etc) For example lets say for arguments sake; lets just have the port and sub on the same plain on the box for this discussion. I'm always trying to learn things to help me make louder, better boxes for my customers. I figure understanding this phenomena will help. Thanks in advance

If you run the port externally, does it take up space or add to space inside the enclosure. Same idea as inverting your subs, they still take up space inside the enclosure, correct? Thanks

Just to start off, I'm building this for the heck of it and recently picked up an inexpensive Memphis audio 15-ms84 to build a box around. This box might be placed in a car just to see what it will do but will stay mostly in the office. The pictures should give you an idea what I'm trying to do, and should show most of the specs of the box. Basically using an 8.25" x 1" slot port that is 23" in length with a tuning around 38 hz. The box volume is .59 f^3. The response curve seemed to have an nice flat-ish shape that hopefully will make it sound 'full' to the Fs. If I'm doing something completely wrong, please let me know - Gently please. Thanks John

I am going to build a box for 2 18 bls and was wondeing if it would be better to build a slot port design or a rounded port out of like pvc or something.

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Ordering a AudioControl DQXS digital processor sometime in the near future. All the speakers I have are in my sig. I need suggestions on where to place these bad boys. Two 6.5"s are going into the bottom of each door. for the 4s and tweets do u fellas suggest I do 1. midrange/tweets in doors and a-pillars. 2. doors and kicks 3. kicks and A-pillars note: each 4 will have a tweet right beside it, so it wont be off axis

im looking to build a ported box for 2 12'' chaos .does anybody have any designs that would be easy to make? im putting it in 98 explorer so it can be a pretty decent size

A buddy of mine came to me the other day with 2 15s and wanted me to make a box that would fit in a 1999 Buick Park Ave. With a Height of only 14 inches its gowning to be a Wedge Enclosure. My ? is should i port the box in the front or in the back? The back seats do not fold down but in between the seats the arm rest folds down and gives a quick access hole that is 8 1/2 x 7 1/2 to the trunk. I was thinking of putting the port right there but im not shore. pic of trunk access hole http://memimage.cardomain.com/member_image...9377_5_full.jpg

so i think i wanna make some new boxes for my 18" BTL's they sound great in the boxes there in right now but i think i can gain a little more output with some new better made boxes. right now there in a 2000 dodge caravan. the boxes are 8.756 cubes tuned around 32-33hz sub up port up. i have been told by a friend that also runs 2 15" btls in a caravan that sub up port up does not really gain the maximum potential out of the cabin. so i was thinking about making the new boxes sub up port back. what do you guys think about differant setups like sub up port back sub up port side sub back port up which one do yall think would be the best? and can any one explain what port off…

Got bored looking at the new sub in the cardboard box from Fi and then i though duck tape and all hell broke loose!!!!

I sm trying to get my trunk ready for everything but before I start deadening I need to decide what to do with my spare tire well. I know I cant leave everything in there cuz it will vibrate like a mother. But if I take everything out there is just a big hole so what can I do to cover this that won't cause any noise?

Ok people, I decided that if I can go with around 3.5^ for each enclosure for the HD 15's, then i'm going with that. I know that isn't the optimal size for this sub, but it's just for a daily driver and not doing any competitions; basically trying to bump somebody out on a street situation. If this would be too small for the subs to actually put out at their full potential, then I would have to go with 2 of the HDC312's. I was thinking to take out the rear deck and have the subs/ports firing through there with having the space b/t the box and metal sealed. What's the input on this one?

first off here is my box: here are the plans i used to build it: 2.26cuft@34hz i have a 12" fi Q BP power off 1200 clean watts and it sounds great in the car but when i pop the trunk while the sub is playing there is this whistling and its really annoying... seems to happen worse on low notes... what is the cause, not enough port area? cuz i am pretty sure there is plenty of port for this sub ive already decided i'm building a new box eventually but this is an annoyance that i would like to avoid with my next build tia!!

I would like to go with two jl audio 13 tw5 or two re audio sl12 http://www.audiojunkies.com/blog/646/res-n...nclosed-woofers http://mobile.jlaudio.com/products_subs_pa...php?page_id=245

I was designing a SPL box for 2 10's but i was seeing in other box's a triangle down in the port here is a image of my design. is this correcto or do not is very efective in spl designs? is for 2 10" it have 2.33ft3 with the woofer, port & 45's displacement, the triangle is not contemplated in the displacement. i hope you can help me

hi, i have been doing so searching and i see that some people use clay as a spacer and i am wondering 2 things. how well they work and the other being how do you do it. cuz i need 2" spacers on the cheap side and all i could think of on how to get the clay to work for me is use something like these http://www.homedepot.com/webapp/wcs/stores...03+501959+90025 to give the clearance and then just fill in the space with clay and more then likely us fiberglass resin to make sure it is seal.