SPL & SQ / Fabrication

box dimensions 38 * 13 * 15.98= 7894.12 in³ = 4.56835 ft³ tuned to 32hz Bracing with 1 in dowel rod up/down r=.5 h=15.95 3.142 * .25 * 15.94 = 12.5 in³ = 0.007233 ft³ front/back r=.5 h 12.97 3.142 * .25* 12.97 = 10.188 in³ = 0.005895 ft³ probably two of these.. perpendicular or parallel so this leaves either 4.553884 for parallel or 4.555222 for perpendicular, up/down and front/back plus sub displacement of .19 4.363884 parallel.......... and for port area, with 57.25 in² slotted, ~50% for aero is 28.625 in² so a 6in aero port will be about 13.62 in long with the flare, with 28.26 in² without. round is also about 55% more efficient than slot so.. i think all my math …

I'm new to this forum, so let me know if this has already been covered. I have a Carvin HD900 amp and a RLP15d2 driver and want to build an MDF enclosure. I would like to position the driver so it is downward firing and would also like to have port(s), perhaps on the rear. I would like to have a width of 20" and height isn't a concern. I think I want to tune to around 14hz (want something really low) and need to know about amounts of polyfill inside the enclosure as well as internal bracing requirements, etc. Basically the whole picture:) I'm gonna run 900w in 4ohm bridged mono mode for power (think that makes sense...lol). Please help!! Thanks!!

I have some final questions for my box build. I wanted to use two 8" aero ports that i was going to run through the rear deck to the box. Both ports will have to be 32 inches long which is two long. If i switch to two 6" will that be enough port area for two z 15's? I need to switch to a smaller diameter ports so they will be shorter. What are the pros/cons of doing this?

i'm planning on building a new bass speaker for my amp and while sorting out the components i'm gonna i stopped to thing about their different db-spl so i thought i'd asking the guys here if they know if i should choose woofers with the same (or about the same) spl

I have an optima yellow top right now and its used for everything, starting and audio equipment. I'm looking into getting a new battery and was wondering if I should buy a red top and use it for starter battery and use yellow top for audio. Any suggestions?

I need some tips on doing a bed cut. This guy has 3 digital design 1500 12s. I cant remember the year or model but its a dodge single cab. The diminsions i got were 15" tall, 40" wide, and around 40" deep. He has them on a kicker zx 1000.1. I just need some tips on how i should go about doing this, since i have never done one before.

hello everyone, im trying to help my friend build a box for his 2 15 inch dc xls . he has a mercury mountaineer like 2001-2002 model. he wants it ported, subs facing up and port facing back . the thing is he wants plexiglass facing the rear as well so we can see the subs. idk if thats good or bad to have the plexiglass and port on the same side? also if anyone can recommend a good site or program to help me do some designs .. he wants tuning at 35hz. or if someone can sketch up a design for me with measurements that would be great! please help a brother out lol. we're looking at 15 cubic ft of space or so for the box,

okay simple enough for the knowledgable ones, IA's 187 12" subs, port up, subs back, going with 4.5 cubes and tunning at 34hz. using 4" aero ports (4"X17") =how many, how long? the one who answers this will receive good fortune for the rest of his days! thanks chop

Hey everyone! I'm looking to replace my current set-up with something new. My amp just died today on the way home from work and so I'm in the need of a replacement. Currently I have a set of RS65.2's up front only, after pulling out the rear deck speakers. Having only a front sound stage is new to me but, after running it a few weeks, I got used to it and really enjoy it. What I'm looking for is either a new amp to power the existing set I already have (not sure how much life is left in them) or get a new amp and a set of components to match. Budget is ~500 but I wouldn't mind going a little more if I could get a nice eq in there to really dial in the system. If you need …

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I am trying to come up with a good design for a ported box for a 18" BTL. Now it is going to be in my trunk but I am going to try to get a full 8 cubic feet. It can be 41" wide, 29 inches deep, and the tallest it can be is 18.5" and that is exactly right size for a 18" BTL. The only problem I have had is that I know it is going to need some kind of bracing and since I have no idea how to go about that I don't know how to calculate in the displacement of the extra bracing, and I don't know how to figuire out how big I will have to make my port to be at about 30hz. If it is under 8 which I'm sure it probably will be I'm fine with that I guess, but I need some help on how to…

Here is a list of events we have scheduled for 2009 so far. There should be a few more added to this list within the next few weeks. If you have any questions please contact me at [email protected]. January 24th 2009 - Image Dynamics Sound Challenge Image Dynamics Usa 620 south Magnolia Unit C Ontario Ca,91762 866-933-1414 Formats: SQi and SQc Entry Fee: $30 and $50 for 2 formats February 15th 2009 - Beach Autosound Sound Off Beach Autosound 18042 Beach Blvd. Huntington Beach, CA 92648 714-848-5400 Formats: SQi and SQc Entry Fee: $30 and $50 for 2 formats March 7th 2009 - Audio Shoppe Last Chance Show (Last chance for west coast to qualify for finals) Audio Shoppe 676…

The magic numbers for the DCON 10 seems to be 1.25 cu ft, tuned to 32hz. Does the vehicle really have any significant play on that? I don't compete or anything. I just hear this thing really performs with little power. I've got all the components of my budget system except the sub and box. For some reason it's the hardest thing for me to decide on. I really wanted to get away with a prefab box, but they are all tuned around 38hz. What's the point of buying a decent sub if you're not going to maximize it's potential? Anyway, As far as box building goes are there any walkthroughs or step by step type guides? I can figure out all the dimensions and cuts but the assem…

MY buddy drives a 2008 regular cab silverado..... He has a matrix 12' that is a fairly beefy subwoofer..... if im correct his amp is 1000 watt This weekend we plan to build a box like Fi-Ford Console/Enclosure...STEALTH - SSA Car Audio Forum Has built for trucks.... My question is.... WE plan on just doing it sealed to begin with... I think with this small of a truck it will be just fine and loud enough.... If he is no satisfied if we were to use like 1 or 2 tubes of pipe to port it would it in any way mess up the subwoofer or anything... ( could we vary the sound by length of the port in the box what size pipe would be best... ) also... if we do it either…

I am looking for anyone in NorCal who might have a mic and whatever software needed for EQing my car that would like to help me out. or if you know of any local shops that are good about doing this sort of stuff cheap/free, that would be cool.

Anyone know of which programs professional fabricators use...?

http://www.termpro.com/asp/members2....&MemberID=9878 Some more info about the show Taken from bill Address The address listed in the link and in the previous posts is at my "shop" garage/ house right across the street from the n.tonawanda police station there is plenty of street parking ,this will be an outdoor show ,the garage will be open and the judging table will be just inside. there will be plenty of room for head to head competition in 2 lanes at the same time. Trophy's: We will have a trophy for loudest of show and certificates for all other competitors along with 2008 points for finals ALTHOUGH IF THIS SHOW CONTINUES TO GET BIGGER .......the location might …

I will be soon upgrading my current sub and box setup in my F250. I am limited on space and think I can go 1.5cu without much issue or maybe even up to 2.cu if I add an extension piece. My goal here louder deeper harder hitting setup. Here is a pic of the space I can work with and my current box. 1 10in Fosgate p2 in .53 sealed. I can easily double the size of the current box or I can make almost like a L shaped box to utilize the lower section behind the pass side. Without using the the lower pass side I think I could do one that is (17in H.. 33in W.... 5in D1.....8in D2) this would be outside diameter and I will be using 3/4 MDF. This should be about perfect for o…

Im designing a new box for the new mag whenever it comes out and im going to stick my current sub in it for now (old 10" circle solo baric). I currently have it all figured out for 1.68 cubic feet. After the sub and port displacement that gives me the recommended 1.5 cubic feet with a 4 inch pvc port that is 19.12 inches long for a tuning of 32hz. Now my problem is that my box isnt long enough (20") for that lenght of port. Could I use 2 2 inch pvc ports each 9.55" to get the same tuning of 32hz? This will be going in my 05 king cab frontier so thats why im kinda limited on space. Also im thinking of putting the sub towards front of vehicle and port up, any advice t…

looking for some help with the enclosure i am planning to build in the rear seat of my accord. it is not going to be a wall but a ported box reall. i was just wondering how to face the subs and ports. like subs up ports forward and that kinda junk. well i guess i should have stated what im looking for. im looking for a loud daily driver.

I currently have 2 15 fi Q's and want to put them into a fiberglass enclosure. I will frame the back, bottom, and both sides out of MDF, but i am wanting the top and front of the enclosure to be fiberglass. What is the recommended thickness or number of layers of mat or cloth that i should apply for 2 Q 15's. Amp using the AQ 2200D amp if that helps. Thanks

Sup guys, first time poster. I have a 2003 dodge dakota regular cab. I have 2 SSD 10" that I have in 2 sealed boxes behind the seat. I am looking to take one out and put 1 ported box for only one sub in. I have the box dimensions that I want just can't figure out where to put the port or how big it needs to be. I have a HiFonics 1600 mono That I am going to be wiring to the sub at 1 Ohm. The box dimension I have came up with will give me 1.25 cubic feet @33Hz. Height = 15 inches Width = 24 inches Depth = 6 inches Please help with port size and location

Hello, first of all please excuse my english, I am from Romania. I just received a fi Q 15 ( no options ) and I am trying to calculate my speaker enclosure. I want to go for sealed enclosure because I don't have much space in the trunk ( BMM e46 sedan ). Recommendations for fi q box is 2-2.6 cu ft. With my calculations I am about 2.5 but I want to be sure I calculate it right before I give the blueprints to the box builder This is my result, I am happy because it fits inside the trunk perfectly. I made a dummy box to see how it will fit inside the car. Wood is 1 inch thick.

alright so i think im going to be mounting my future amp to the back of a seat. is that bad? and also what material is good so the amp doesn't rattle around.

I don't have a disc to install windows on my mac, and I kinda want to use my TermLab. Does anyone know how to do this without using bootcamp or a visualizer?