SPL & SQ / Fabrication

ok so i've got an sp4 15 on the way. its going in the trunk of a 94 lincoln mark 8. i've built a box already thats a tight fit to get into the trunk and its only 3.5ft^3 tuned at 33hz. ive got plenty of trunkspace left the problem is getting anything bigger thru the trunk opening. so im coming to you guys for help/tips for building in the trunk. so what would be the easiest was to assemble in the trunk?

As the title says, has anyone ever built a steel enclosure? Does it sound any different? Just curious if its been done, if anything was gained, etc. This is more geared for spl

My current box is 36"x16"x28" tuned @30 for 2 icon 12's.slot port.My question is would I benefit from building a new box with the port centered between the subs and fire the port thru the rear arm rest.Back seats don't don't drop down.98 pontiac gtp.

I just bought 4 sheets of 40x55 at 1/8" thick(or something like that) of nuprene off of ebay for 40bucks. Supposedly its used in boeing airplanes and such. http://cgi.ebay.com/ebaymotors/ws/eBayISAP..._Pr4_PcY_BIN_IT Does anyone know anything about it? it's got to be worth over a buck a square foot so I'm not really worried about getting ripped off. Once I get it I'll let you guys know what I think, should work well in a car. but I doubt that dynamat used that statement the guy had in his ad. thanks, b

So last time I entered an spl I tied a guy with two 10" solo x's and a rockford fosgate t3000, and there's another in 2 weeks and im sure he will be there. I dont want to risk damaging my sub by upping the gains or voltage any more than i did last time, but perhaps i can adjust the box/ place it in my car differently? The box is a little over 4^3 at 31, and it is about a foot back in my trunk facing into the car. Only ideas i have now are putting 45's in my corners to help flow and raise tuning, and face the sub towards the trunk. Are there any little tricks anyone knows about to give me just a .1 or .2 db gain?

I'm running 1 SSA DCON in a 2.3ft^3 ported box at 31hz, its down firing in a 02 GMC sierra on a Diamond Audio 400.1. It just doesn't seem to hit the low low notes like my last subs, I dont know if its because its ported and they were sealed or if its the Subsonic filter or what, just looking for suggestions. I can feel the lows and the port fires like a hurricane, I just can't hear them that well, it seems to be only below around 30hz, for everything else it slams, and seems to play everything accurately.

Hello everyone. I am redesigning my enclosure for my 15" ethos for different mounting options. When I use the Torres calculator I am using the total net feature with 3 cu ft and also 3 common walls since it is a slot port. Using a port that is 4x18.5 at 56" long gives me a tuning of 31.94 hz and 74 in2 of port. Then when I use the same size port in the carstereo.com calculator it tells me 48.5" of length is required to give me 32hz tuning. So my question is which one should I use. In sketch up I am designing the port by measuring down the center. Thank you in advance for the help.

Just finishing up a ported box I did for my Icon 12's. Still have to cut out the woofer holes. They'll be facing up. Anyone have some suggestions on how I should finish it? Stain, paint, carpet? Port painted white? Or stained? Any ideas appreciated.

Well I sat down tonight thinking I have most things ordered, I may want to double check my trunk space. I re measured and I was off a few inches on the height. My trunk space is 40W by 42depth by 18 high. This will give me about 14.07 cubic feet of total area. Now if I were to build a box and have it exactly 6 cubic feet with an external port to save room this would leave me with 8 cubic feet remaining. I have a feeling I may not have enough air flow to keep a 18 BTL in the trunk ($^%@). I do (i think) have enough room to store one but I would be starving it for air. I measured one of the seats and its about 2.5 feet by about 4 feet in height. I could lower the back to al…

Just put my old Alpine 9831 back in, when i turn the ignition over I get the loudest pop ive ever heard, all door speakers and sub real loud. Im thinking its the ground on the HU but im not sure. The wireharness for this HU is kind of ghetto, I got it off of ebay and there was no remote wire, so im pulling of the switched wire. Heading out to ground it better, what do you guys think it could be? Ive had the HU hooked up in the car before but never with an amp. the internal amp on hte HU is blown FYI, not that it matters much.

not...pics coming soon, as soon as the bleeding stops... Well i got my MDF...while hauling it into the garade because it was starting to rain i tripped on my Floor jack, sliced my foot pretty deep, and got traped under a 50lb sheet of MDF.... well needless to say it was funny to me, untill i realized how bad my foot was bleading... 2paper Towels and a gauze pad later 2 more gauze pads later and a small bandaid and 2 hot pink bandaids later.... well once the bleeding stops completely (its starting to seep fomr under the bandaids...i hope i dont need stiches) and i finialize my enclosure plans (ive gone with my original idea, dual upfiring ports...screw it...) ill start …

It seems to me like BL (typically measured in Tesla meters) would be a good indicator of motor performance and overall subwoofer ability. With that said, I am supprised that numerous woofers that people commonly call, good strong subs have a fairly low BL in comp to other subs. Subjectively strong subs (by overall consumer babble) Image Dynamics IDMax Bl about 10 Jl Audio W7 series BL about 10 MTX 9500 series BL about 10-20 depending on model SS RL-P BL over 20 So is the SS motor twice as strong as a motor rated at 10TM, or am I completely off base. How do BL and RE interact, it seems that BL would be a constant bc its …

Hi, I am curious as to what the best way it is to have the system not be choked up in a trunk. currently my box leaves about 4-5 inches of room between it and the side of the opening that goes into the cabin from the trunk. so thats the only gap there is between the trunk and the cabin, unless you count the rear deck, but that doesnt let much air through. so im designing a new enclosure to fix this problem, now my question is, is it better to have space for air to flow above the box or on the side of the box? this will be for a sinlge 12" BTL, and if i do it with the airspace above the box i will have about 3 inches tall by around 28-30 inches wide of a gap between the …

alright i have a 2001 honda accord coupe, and am looking into buying a new ride. im not sure whether to be looking into another trunk installation, SUV, or hatch. I have a diamond audio d915d2, a us amps AX1000de amp, alphasonik components with a us amp merlin md41 powering them. i am looking for basically a realiable wehicle that will be the best for a LSQ system. looking to pay around $20k or less, or if i should stick with the car i have now. dont have an enclosure yet, but will build for respective car. (if keeping the accord i will be making a fiberglass corner enclosure), and i may also be doing this for any other car i may purchase. something sporty, and that…

Alrighty soo I've been wanting to do my own custom install for a while now. I wanted to acheive a more compact design- one that didnt take up much trunk space, was easy to remove if needed and that was still loud enough and cool looking to not only make me happy, but impress my friends too. Thus came the idea of the sono tube! With the design concept settled, I started looking for the perfect sub to make all the magic happen. I wanted something beefy, but in a 10". After some research, I ended up going with tcsounds oem tc10 and their matchin passive radiator (which might I add is one sexy little thing!!). http://www.mp3car.com/vbulletin/attachment...uild-d-cone.jpg http…

Hey guys I’m building a sub box for a friend. He has a 98’ Camry and wants to fit a 15” T1 in there. My question is what’s the best sub orientation for a trunk setup. I have Sounds in my Altima but I got port and sub firing into the cabin. My friend doesn’t wanna leave his seats down so he asked to have it both firing backwards. Is subs and port back best for a trunk set up? Or is sub up port back works better? I even seen people saying sub up port to the side is really good. But I’m building the box the total usable width so I don’t wanna fire the port right against a wall. Thanks for the input as always guys.

http://forum.realmofexcursion.com/showthread.php?t=23802 Just saw these. FRIGGEN COOL! I may just have to get a circular saw for my BTL box.

I can get my whole box to bounce up and down on the really low notes, and the woods vibrates a little more than I want. My box has no internal bracing, and it has a double baffle. 33inches wide x 32 inches deep x 12.75 inches high Now how can I strengthen this box without it taking up too much volume (minimum amount) and without having things poke out on the outside. I would use allthread, but that would cause me to have the end/bolt sticking out of the edge of the wood, which cannot happen because the box fits pretty tight. I was thinking about fiberglassing or using wooden dowels. Any suggestions/advice? Thanks!!!! Note: please don't get into arguments about strength an…

As most of you know i am doing an imc plan for an audio enclosure company. During my research i read that cars equipped for SPL cannot play normal music. I want to know if that is true. I need to do a a technolgy review and i want to mke sure i know the difference between systems designed for SPL vs systems designed for SQ.

I am running 2 18s walled off in my 2002 grand prix. Before I took the 18s out I was doing a 157. I am looking for a component set(I believe stock size is 5.25) so that I can hear my mids and highs over my subs. I am aiming for slightly louder next year as well. Going to try to break that 60 mark. I am not looking to do much fabrication wise so I would like to stick with stock size. I will make a cutout for a super tweeter if that is something someone recommends. I have looked and hunted around a ton, but can't really figure out where to start and what to look for. Any help would be appreciated.

hey guys, i have a 18" fi q with bp power. im running it off of a 1600 rms hifonics amp. i have it in the back of a focus hatchback in a 6.3 cubic foot box tuned to 28 hz after displacement. my question is, if i take my backseat out i can build a bigger box. i dont use my backseat much so idc about that lol but say i built a 8 cubic foot box and tuned it the same, would there be any difference? if so what would the difference be besides no backseat?

Hey everyone. I was wondering if anyone could explain to me how the freq of a box affects the sound, like what a low freq is good for and how it sounds along with a higher freq? Also, when the inside corners/edges of the box are angled, will that give you better spl? And I was thinking of sanding the edges on the outside of the box to a curve to make them round instead of a straight edge...is that a bad idea? Thanks in advance, Jack3d **Any help is always appreciated

We have been consistently beating Experts in the top class with unlimited resources. We of course are on a budget. We have over 45 years combined experience between the 2 of us and started out in SPL. We are competing with the current world and SBN iSQc championship vehicle. In the works is my 1988 Red S10 BlaZa to compete in the 159.9 class and win SQ at the same time. below is 10 years ago below is door panels from us in 1992

Hey everyone first off I'm new to the site so I would like to say hi. Now I have a 2006 impala and I have a fi bl 12 and I had a fully costom box build that is right at 2 cubic feet and is tuned at 33hz potted through the trunk deck. Now the sound is horrible so atomatically I think it's the box but my buddy has the same size box and same size port that was taken out of a mozda rx8 and it's just sitting in the bak of a Mazda b2200 and we put the sub in that box and it freakin pounds. We took his treo out and put in my box and it has good sound. So my question is why in the world does the fi not sound good? I have had it in boxes that load up in the truck and sound amazing…

The goal of this topic is to discuss the possible effects fiberglassing the inside of a subwoofer enclosure has on the sound? I am currently building my enclosure and am using fiberglass to make the box more ridged, prevent air leaks, prevent flexing, raise the boxes failure point of the box, and I just like building things heavy duty. I honestly never thought about the fiberglass effecting the sound until Pork Chop brought it up last night. I used the search function but did not find anything about effects on sound from fiberglassing an enclosure. I would like to hear some opinions about this from people that have experience with a fiberglassed sub box. I would also …