SPL & SQ / Fabrication

Hope everyone had a happy and safe holiday. Alright, I want to upgrade my front stage and would like some help with speaker placement, setup, installations and whatever else you guys suggest. Check my signature for the setup I currently have. I have a lot of time before I get everything and install because I'm in Afghanistan right now. So basically I want to improve on my overall sq because my speakers are lacking in the midbass area and want to change my setup and I guess try to go active and really experience a real sq system. I'm not trying to go all out in the sq area but I want to do a 3way setup and just upgrade my setup. Any help would be greatly appreciated. Than…

which way should i do my box design for a btl 18'' with two 6 in aero ports. sub up, aero back?

Supp' SSA!! I am looking to build a higher tuned box for my 2 15" Fi Audio Q's. ( I know they are not made for spl) just for fun... I do 148.1db @ 45hz (30hz tunning) but looking to see what higher tunning will do. For some reason i always peak at 43-45 hz with diferent boxes/tunning and a friend also peaks at 45hz with diferent boxes on 2 12's. Is it the Tahoe's peak or something?. Both are 01/02 Chevy Tahoe's. If i tune a box to 43-45hz will it help because of what i peak at ? Thanks for the input.

Hi It just got to my head that I should probably get rid of the box I have and make one myself. The one I have was bought from a shop and I dont even know what it is tuned to or the cubic foot. From the outter measurements, Im calculating 1.75-1.80 cubic foot. Here are the measurements of the current box I have my Pioneer TS-W3002D4 Well, basically I want my own box so that I know the exact tuning and size. First, I would like to know if its good to have a 12" tunned to 32Hz since thats what I want to have my box tuned at. 32Hz with ~1.80cubic foot AFTER subwoofer displacement. I would prefer to have subwoofer AND port facing the same way and box measurements ~15-16inche…

hey gang we are having our second annual spl clinic....this clinic is free and open to everyone.....we strive to help get new people started in spl and for us old dogs to learn something new...there is a flyer for the events coming up on our web sight at the link below http://www.trueaudioconcepts.com/specials.pdf if you would like to help out with this event we would love to have the help.....just contact me through the web sight...thanks

http://www.partsexpress.com/pe/pshowdetl.c...=25&rak=390-802

I am designing a custom box I want tuned at 32 hz and I am not sure if I am using these online calculators correctly. I enter my box volume and height and width of the port and it gives me the length i need to make it... my question is what is my box volume? It is with or without the port??? My box is all completly designed and ready except for the port length because I am not sure how to get my desired frequency. Here is my current box. Height= 15 inches Width= 17 inches Depth= 20 inches (I might lower depending on how much I need for port) Port height = 13.5 inches Port width = 2 inches if this enclosure was SEALED, its total volume = 2.24 cubic feet, i was aiming more …

My lil ass will be there with my bro from Tallahassee...just booked hotel and plane tickets. see he just busted a 159.5 Shane? Like 5th in the USA (SS1-2)..hell yea! more free chit!

hi, i am new to the whole db drag thing? if thats even what it is called. how does these competitions work? i would imagine who ever had the most money would win... i mean its not like you can run and make your system louder or anything so since it is all just bought how is there a rightful winner if people just drop thousands and thousands of dollars? sorry it might sound stupid but i really dont understand.. vocab might help me too! thanks

Looking for ideas based on experience! My shop has a 1998 Chevy extended cab being used for SPL competing in USACI Modified. We will be using four AddictiveAudio V4 15" woofers with roughly 12,000 watts rms. My question is how should the enclosure be built for max spl? Just looking for ideas here.. we are stuck at 157.6 db on the term-lab at drivers kickpanel.

I've posted this on some other places and I'm trying to get some feedback..I've ran into a dilemma. I don't know if I should carpet my door panels or if I should just go ahead and paint them. I have quite a bit of black carpet lying around and I think paint wouldn't be as durable since door panels can flex from every day use and it's kind of tedious prepping plastic for paint. Four 6.5's in each door. passenger side:

I'm starting a box for my new 12 this weekend. Using a 6" aero for this one. Most of my boxes in the past have been sealed or slot port. Was shooting for 1.75cf3 after displacements and a tune in the low 30's. I'm limited in depth (~14") but had plenty of width (~56"). I came up with this design. It's long and shallow, similar to a truck box I built a long time ago albeit smaller. Concerns: The length to height/depth ratio. Would it matter? The distance between the sub and port inlet. It is currently ~4" from port to the closest edge of the sub tuned at 30hz. I can move it in more, each 2" decrease in length equates to about 1hz. Just concerned about unloading. Maybe it w…

For all you guys here in california, or wherever your are, come check out our comp. As of right now its a 2x weekend. With our comp on Saturday and another on Sunday in Woodland. Here is the info. Even if you do not want to compete come out anyways. Come chill... or compete its going to be alot of fun. Giveaways too!

This is what i have came up with, i have the wood, tools, and these are the specs I found most best for the sub and is wondering if this would work prime with the AA mayhem single 12" dual voice coil. http://imageshack.us/a/img22/3130/subspecs.jpg

So i was metered today and this is what i got... 144.6 Outlaw under the floor @ 39hz and an oddity i scored 145 @ 39hz legal on the windshield The shop i was at thought it was quite odd that i was hitting higher in legal than i was outlaw. 15 fi bl on a saz-3000d @ 2 ohm

want good LSQ setup one si bm 12

this is my first time tooling around with winisd. my fi sp4 should be here any day and i'd like to make sure my box design is okay or if i should tweak it. ive seen port velocity used frequently around here and i was wondering how i can determine port velocity. is it for aeroports only or can port velocity be determined in a L slot port? can someone explain how to find out the port velocity for a L port. and before people start saying, yes i did search around a while on the forum and google and couldnt come up with the answer. thanks!

Alright.. im kicking around the idea in my head to purchase a crescendo 3kwp to use with my 18" BTL (d2) .. when i had my box built for me he wanted to know what size amp i was going to use.. i told him the sundown 1500 (which is hooked up right now) ..he made the box on the larger side, i dont know exactly what the cu ft is.. thing i dont know is, should I do a new box up if i decide to throw a 3kw on it? Does my box size play a big role on the amount of power i feed my sub? Whipping up a new box will be a pain in the ass lol.. but if i go dump the money into a new amp then re building isnt gonna kill me. Im pretty sure I can answer this already.. i have a feeling the s…

Hey guys i would fist off like to say thank you for the big 3 help. i have all the parts but the wire and am getting ready to start it, The subs i will be getting will be two 10 inch FI SSDs with cooling, and amp i am not sure yet but might go with a new crescendo amp SSA now sells. also getting a second battery down the road. Well the question is do i port the box or not? I have the space to do it and i was going to do the port out of the top of the question is what do i do inside the box here is what its going to look like and it will be the same on the other side too. any help will be great

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?

As I begin my adventure in the SQ lanes, I have been doing a lot of research and studying. My general synopsis is, for SPL, in a vehicle, we want the most reflective material possible, such a concrete, or marble, so that there is no loss in energy. Obviously this is not practical, but in this example, it will work. Ok, and for SQ, we want the total opposite, we want complete absorption so that none of the higher frequencies reflect, which can cause interference, overlap, and many other issues. From what I've seen, things such as egg carts, foam, or MLV would be the fix. So what I am asking, what would be the best and most particle material to use in the vehicle for sou…

Internal dimensions: 15" d 34" w 10" h Port: 10" h 3" w 30" l Sub displacement .1 cuft Subs up, port sideways 2.1cuft after sub and port displacement Leaving .1 for 45s, so 2 cubes net Tuning guesstimate: 33-34 Hz Side note: I would like to figure out how to calculate neccesary port area by the parameters of the sub, not by the 12-16 square inches per cuft rule, might use areos if someone has a suggestion.

In my progression to finish my build, some of my amps may require amp inserts for dual cables per input. Now, i have the tools here to make it, that's easy. The thing i do NOT like about these inserts is how they are secured in the amp.. just by the little set screw on the amp.. For holding a solid piece, i fear the insert can "turn" eventually and i don't like that. Instead, i thought about purchasing a Metric tap and die set to tap the power and ground inserts on the amps. There appears to be enough metal in there to do so easily. I do not know 100% what size tap i need but i got some micrometers here to find out but the question is this- If i tap the amp and die the i…

I have a box in my Mustang that's 2.5 ft^3 tuned to 32 Hz that's used fo my 12" Mag D2. If I just swtich out the Mag D2 with a 12" Fi Q, would the tuning still be 32 Hz, or am I missing something?

Ok, I will be googling how to do fiberglass work soon enough....but i just wanted a general concensus of about how tough it can be....I want to build a L type sealed enclosure going from the floor in the back seat of a friends truck and into the center portion of his seat. I would like to do it in fiberglass and just wanted a general idea of about how much work i am in for. Is it okay to have like 90% of the enclosure to be mdf? I just need the top portion to be fiberglass so i can angle the subs to where i want them to point. Also, it is okay for 2 subs to be in a common chamber isnt it? I thought it was, just wanna make sure. Thank You