SPL & SQ / Fabrication

im about to trade for 2 SSD 18's just to mess with for a bit. so im planning on running about 11.5 cu ft at 35 hz, but gonna make interchangable ports to play with different frequencies. so should i port it forward, or up. subs are gonna be facing forward in a 01 dodge ram ex cab BTW

Ok in the cargo area I got 38Wx20Dx22H. Was gonna only have it 20" high but bumped it up a lilttle to get as much box space as available. According to a box calculator on the12volt.com puts me at 8.01cf, figure about 7.5 after sub displacement (i think thats about right). I tried figuring out for ports and when I put in a 4" aeroport tuned to 32Hz put it at only 1.5" in length.....this does not seem right to me. I tried figuring out for a slot port at 4"x18.5" tuned at 32Hz put the length at 18.9". A 2"x18.5" slot only comes out to 8" of length. Does all this seem right? Tried to mock something up in google sketch but I failed pretty hard at that. If I can't figure thi…

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.

right now my box is subs up, port back 20 cubes before subs and port with about 200+square inches of port tuned to 33hz, designed by chris at fishercustoms. It picks up lows and pretty loud, only metered before i built this box and was 149 on tl and did 151.7 on audiocontrol meter at local show. Now with this box, it sounds louder to ear, but havent metered yet. Problems now are i have bought 2 boxes of stinger roadkill bulk, did roof, doors and back door. It doesnt rattle bad, the back glass is terrible, but everytime i open back door, metal braces or pieces of the lock and handle are broken and fallin off. LOL. I got guy i work with to tig weld a rip in back door alread…

so my RL-i 10 has arrived, now i'm waiting on the amp. my 1st question is this. would putting the driver on the back side of the truck box be a bad thing? i know to allow for excursion clearance, but it would still be pretty close to the back wall of the cab (regular cab ranger btw). would there be some adverse effects from the air the sub is pushing not escaping away from the sub fast enough? here is a crude 1 minute drawing. i was thinking if it would be alright to face backwards; i would extend the sides of the box to act as a separator between the box and cab. i've seen boxes like this before, but they were facing the front to give separation from the seat. this n…

So I am designing a new enclosure and this one will have a center port. I have concerns with my port width when it reaches the rear of the enclosure. This is for 2-Zcon 12's,SAZ3500 power,currently box will be at a net volume roughly 7.8 cubes tuned at 32 the distance from the port wall to the flare is 4.33 inches if you cant read the photo Since it is in the center do I need to maintain the same width(in my case 6.5inches)? Is there a rule of thumb for this? Here is a pic of what I currently have designed.

How could I brace my port more, or do you think it needs to be braced? Here is the bracing of the entire box, but it is also for an idea of what the port looks like... also, do you think a 45 would be helpful in my port? I don't think it would make much of a difference....

any1 familar w/ my make/model please help. I already have tons of flex in the frame all around the sunroof but esp. the front part of it, I am about to be installing more then double the power + batts + 0 gauge so I am concerned. I def. cant even listen to the music up with the sunroof open, hell I can't even open up the sun shade on it when the system is on blast w/out fearing a glass shower, so I have no problem doing something extreme to fix this problem or at least help with it. If shizzzon reads this I am very interested what you did or are planning to do with your scions sunroof. Thanks in advance for any suggestios or thoughts on this. - anyone who has any advice…

Hey guys, I have 2 Older model Audiobahn Immortals (not the flamed out crap, and I got a good deal so dont rip on me please). I hit 140.8 legal on the TL with one in the trunk in a small box firing up in my civic, and want to put both in my backseat and make a temporary wall for a comp coming in a couple weeks, doesn't have to be perfect, but any pointers? People around here don't know there chit so I want to show people what a loud car is compared to some of the retards around here. Ill try and get some pics up but wondered if anyone could help at all. Thanks guys. Andrew

well guys i am confused here and i can't figure it out does five 3 inch ports equal to one 15 inch as far as port area????? i know it is simple but i need to make sure for my design.....or also does two 6 inch ports equal one 12 inch port?????? well guy some feedback would help me out a lot.

I have 4 15's I need to fit in my Altima! Kinda a wierd lineup but I got screamin deals so oh well! I need some advice on how to run everything! I have 2 Phoenix Golds XS2500's and a PPI PC2150. Heres my subs 2 15 inch JL Audio W-6's and 1 15-inchPBX PowerBass XSDv.2 and 1 Power Acoustik 15-inch FUBAR 15W(1000w RMS ones) This is how I was gonna set it up but need help! I was gonna run an XS2500 bridged to 2Ohm to the PBX and FUBAR!(1 to each bridged) than run the PPI to the 2 JL's.... What do you think? I have a cap too a phoenix Gold XSC1o at 1.0 farad but I know I'll have to either get another alternator put in or a Optima Battery! Which should I do? I havent hooked it …

hey, i know im a little premature since im still looking for a vehicle to build up , but where can i get a small sheet of plexi to etch for a custom logo? So far ive got most of it planned out. Ive got a pioneer HU, a damn near industructible class D amp thats stable to 1 ohm. Since i took all the stuff out of the X i just need to find another vehicle to put it in, and I plan on building a custom enclosure when i get the car/truck and decide on a subwoofer, right now leaning to one of adire audio's product line. Who know's , maybe once im done i'll even grace the local car show with my presence But for now im still in the planning stages. Could i order plexi online…

Hey, I have a whole trunk to fill on a Impala 1972. I plan on either getting (4) 12 BTL or (2) 15 BTL. What do you guys suggest for this trunk and setup? I have seen 4 12s in a straight box going across but dont know if these require more space. Maybe have two on either side in an arrow up formation, speakers facing the rear trunk. ( ^ ). I plan to build it square ported and have an appeal once done.

I am building an enclosure for a 08 chevy crew cab I'm installing 1 fi bl 12 Im not sure what size port to use or how to tune it to the specs im going for my enclosure is 11"h 45.5"w 16"d rear height is 8.25" I am firing it up and plan to face the port to the front I wood like to tune it to 34 Hrz I am powering it by 1 T1000 fosgate with a 4 farad capacitor my box is 2.51 cuft minus woofer displacement can any one help me if you need anymore info please let me no I am knew at this so please bare with me

its going in my 92 civic 4 door in the rear seat area i was thinking sub up port up...but curious to see what sub up port forward would be. only reason to go in that area is because we could barely get a 5 cube box in the trunk without beating some stuff in box is gonna be 6 cubes at 36hz anyone have an experience in a setup like this one? im not sure if its exactly legal in most comps because the box itself is gonna be over the window line unless they would consider it a wall?

Cabin volume vs box volume. when building a wall do think the box should have more volume than the cabin? Spl should be louder in the smaller of the 2 right.

Building a new box for 1 15". Was gunna make it an abnormal shape as opposed to the everyday cube. I've heard that less parallel sides results in less standing waves, but I don't think it would be too noticeable in car audio. Anyway my point is wanting opinion on the ideal shape of a box. Also plan to port it. Thanks.

I cannot decide on what to do. 4 SA-15"s in a standard ported wall, or 4 SA-15"s in a 4th order bandpass. What are the positives and negatives of both? I've helped build a 4 15"s wall in the 60's and an 8 12"s 4th in 60's. I like them both, both sound good, both played well. I just cannot decide on what type of enclosure to build.

I have modeled up a box for a 12" Fi.SSD Now I'd just some of you box builders to just verify what I've done. And let me know if its good or not Here is a pic since they're worth 1000 words: Port and Sub displacement has been accounted for. Where would be the best location on the port side to place the sub? I dont quite understand port loading and such. Thanks in advance

If I were using the RE enclosure calculator, do I need to take into account the speakers displacement for the tuning? Should I tune about 1-2 hz below my desired tune hz? Any input would be greatly appreciated. Also does anyone know what a Kicker L7 would like the box tuned to? Thanks!

as the title says im very interested in this i came across it on youtube watching some vids read the comments a let me know how it is done please

Hello world, after much research and consideration I have finally decided to become an SSA consumer, I plan on buying a DCON series 15in to run with an Alpine MRP-M650. I plan on designing and building a custom ported enclosure for the sub, and this yields the question, what is the recommended volume for said enclosure? I know the SSA Store gives recommended box dimensions, and I have seen them for the DCON 12, but the fields are empty for the 15 D: Any help is appreciated. My guess would be somewhere around 3-4 cubes? But it's my first build so I feel like I need some reassurance. Thanks

Today im going to build my 1st box for the fully loaded fi bl 12in. Im going to be using 3/4in thick mdf fiber board. Would i have to use braces to hold the box, its just one 12in, and also i have a Sundown sae 1200d amp. Is it capable of producing 1500watts rms. What would you have to adjust the amp to to have a good, loud sound? I have a Stinger amp kit 0 gague, and extra 25 feet of 0 gauge wire for the big # upgrade, and i also have a kinetic battery the khc 1600. Just recentley my friend got his system installed. He has the same equipment as i do, but he has the FI Q. Let me tell you, it is LOUD AS HELL, For just one 12inch... omg i could barely breath. To be honest i…

i can design a sealed box fine. but how do i add the port? i cannot figure this part out!! especially when using 2 woofers and putting the port in the center. or even putting the port at one end or the other if anyone can give me some simple directions or a link to some i would greatly appreciate it

A buddy of mine wants me to design and build him a downfire box for his ext cab ranger. My question is how much is the minimal amount of distance you should leave between the sub baffle and the floor?