SPL & SQ / Fabrication

Wassup fellas I am wondering if I tune my port to 33 hz could I change the tuning of it without switching out the port? Like adding something? I would like to keep it at 33 hz when doing rap demos and daily bumping but then when I use it for work I listen to rock cause of my boss cause he hates rap so tune around 38 hz or maybe a tad higher. I have an hdc3 18 and 8 cubes or so to build.

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'm really confussed on ported box tuning and sizes can anyone help me work out some measurements for my enclosure i have two ascendent audio havoc 18" subwoofers , and two Orion D5000 amps to run the subwoofers . The size of the space I have is 34high x 20" deep 53" wide which is just over 17cuft i'f I've worked it out ok I would like the box 16 cuft and tuned for the lows because want to create hair tricks . The design I would like so I can make into a wall build . Help

Hi, I am getting ready to switch my system from my firebird to my truck, so I can sell the car.. It's going in a 99 s10 ext. cab xtreme.. I have 1 12" pioneer premier 3002d4, It's in a sealed box now, but I want to build a ported one for it. I will be using a precision power 1500 amp at 2 ohms, so roughly 1000 watts to it. I know how to do the wood work, but I am not near as good with calculations.lol. A good slot port box design wood help a lot, if anyone has the time. I would like it to be tuned to 34hz, with 1.7 cu without the sub. For room in the back of the truck I have 14 1/2"x18 1/2"x50".. I know thats more than enough, but thats the total space I have. Also, wh…

Port around 1cubes per chamber. Tuned around 33hz Sealed around .75cubes per chamber Thanks! For 10"

okay these dimenions that i have for this sub box say the front and the top are the same okay thats where i get confused with it because i thought the top was the top of the sub box and the front where the ports at is the front not the other way around. 2cubes35hz2925sqin6tn.png i hope that the picture worked because i do not know how to put them on here if it doesn't work just tell me. because this is really confusing me really really bad.....

I was checking out the parameters for the icon and the aa havoc. They're pretty close spec wise. So would using the the pre made box plans work for the havoc? From my calculations its 30-32hz tuning.

HEY JUST WONDERING WAT KIND OF NUMBERS I WILL BE LOOKING AT WITH 4 15' DB DRIVE IN A WALL POWERED BY A MASSIVE AMP IN A 95 INTEGRA

So I'm taking my setup to a 1x event in timmonsville sc. I'll finally be getting metered on a t/l, but I'm wondering what I should bring with me, and if anyone has any tips. There are 2 classes they said I could compete in, truck/suv or something else like extreme personal or something like that. I don't know what would be better, or if it makes much of a difference because like I said, it's my first competition. I've already been told not to do anything to drain the batteries before getting metered, don't know how sound that is or not... Just wondering if there's anything I should know before driving 70+ miles away tomarrow moring. ;D Thanks.

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:

Yes... I have moved from Corpus Christi and have brought back USACI to the DFW area. I look foward to getting back in the groove with everyone here. You can check out www.myspace.com/usaciofnorthtexas If you need to know who I am and what I have done, go to www.myspace.com/bigmel22 Thats my life story and I hope to lower the boom in the DFW area.

i've decided to give building a box myself a whirl but... i realized i really have no idea what i'm doing maybe someone can help me out with the plans. i'm going to be using 3/4 mdf measurements. width1 = 15 width2 = 10 length = 37 height = 16 sub displacement = .48ft^3 port = 3.5in^2 tuning = 30 hz help me for an orion h2 15.2 www.orioncaraudio.com

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.

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…

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…

Would it be a good idea to cool your coils down to less than 0*C before your SPL run. One of the ways i have thought about would be to spraythe duster cans upside down int the pole vent. Only problem i can think of is if you got alot on the spider. Lower temperature means lower resistance which means more power.

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.

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

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.

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 …

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…

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

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

in the quest for possibly the best SQ to our ears, proper install would always be needed, proper positioning and aiming etc... but on the midbass install part on doors, sometimes we feel something still is lacking... even though we have done all the possible deadening etc needed. and ending up in trying to fit an 8" on the doors. modifying the door moldings and cutting through the metal sheet... Question is... is it worth it? destroying some parts the your car used as daily driven just for the midbass sound were looking for?

I remember reading somewhere about the relationship between a box's port area and potential output. The reason i ask is i have been looking at the IXL drivers from Mach 5 and in order to tune low in such small boxes the port needs to be quite large in order to avoid port noise. I was looking at a 2cf box with a fairly large port (roughly 50 inches) my question is will such a large port casue a loss in output? i was looking at tuning at 30Hz for a daily setup that would hammer out the lows. Is there a general rule of thumb regarding port size compaired with box volume? Could someone point me in the right direction (i haved tried to search) I was hoping some of the experie…