SPL & SQ / Fabrication

Ok, let's say you need a larger enclosure for SPL competition and you have ran out of port options... You need a larger enclosure... would polyfill help or would it actually drop pressure potential... My ports are starting to tune past my peak and i can't enlarge my port area too much more... Was wondering if i start dropping polyfill in the enclosure if it will not only start to lower the tuning back some but keep me gaining as well... Is it worth a try?

so im trying to figure out how to design my own boxes and learn how to use these calculators need advice on how this looks like if its right or wrong please. im looking to build a enclousre with subs up port back going into my hatchback integra. subs i will be using are 3 skar vvx 8s. ive had a couple other threads with this same thing but since i have limited space to use and want to try a aero port now. want it to be tuned either 32 hz or 33hz not sure i want to hit the lows i mostly listen to rap/hip hop and some rock but mostly rap/hip hop. please take a look and give me advice on what you guys think thanks.

i measured from the subs to where the mic go's and got 7' give or take an inch. so 7'x4=28' gives me the 1/4 wave devide 1131 the speed of sound by 28'= 40.39Hz so i port to 30.39Hz - with cabin gain should peek @ 40.39Hz but what about the ports fireing 90degrees out of faze, ??? subs are pointed forward into the back of the seat & the ports are fireing up along the back window line. i drive a 1988' Ford F-150 x-cab

My question is in regards to enclosures. Mostly the relationship between net volume and port area. From the little research I've done. High port area combined with small volume net will yield a very narrow bandwith but with most SPL.But, if you increase net volume, combined with high port area, you will increase SPL while sustaining a wide bandwith.So what I am thinking is. As an example. If I only had 1000watts to a 3000watt subwoofer, 180cuin would be too much port area because I do not have adequate power to displace as much air as I would if I had 5000 watts. Is this way of thinking correct? Like, hard to convey what I'm thinking via typing. But, I guess what I'm s…

Anyone know where I can look at pics of pods? I'm having some started today for my jeep. I'm not building them myself. Is there anything I need to be aware of or tell the person making them? I don't know jack about them. I'm installing my Kicker RS6.5 component set in there. I'll probably mount the tweeter in the co-ax. Any comments, opinions? Me competiting in db drag street class means I can't have anything large or alot of glass on my door.

Tomorrow is 21 days from my order date for the subs. I am trying to get everything ready as I am hoping the subs will ship soon. Thanks for the help The list: Vehicle : 1999 Chevy Tahoe (4 door) Location in the vehicle: Cargo area Space available (Length x Width x Height): 30" x 48" x 21 " Subwoofer make and model: SSA DCON 12 (x3) Subwoofer Size: 12" Number of Subwoofers: 3 Type of Port (Kerfed, Slot, Aero, etc.): slot What type of music do you like?: all kinds (rap,dubstep,country,rock) Is your goal SPL or Everyday Music?: everyday Tuning Freq (Hz): …

Well I've been messin around with WinISD for the past hour, converting units to metric and back again, etc. All I can say is, I'm completely lost. In case you haven't read any of my other posts, here's my equipment: (1) 18" Fi BTL N2 (1) AQ2200D (1) XS Power D1200 Those are the only things I have purchased so far. Right now I'm trying to figure out what I'm gonna do about the box. I think I'm gonna go with a slot ported box, tuned in the upper 30s/lower 40s. Only problem is, the process of designing a box that won't sound like shit is a tough task that is starting to become overwhelming. First question: How do you know what size box to put into a calculator such as this o…

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…

Hi Everyone Need Advice On How To Make My Box Look Good. I Want A Quick Project Do Do Under $60 Carpeting,Paint,Stencil, Spray On Bedliner ? Let Me Know If You Have Any Ideas. Here is A Pic Of The Box. Thanks ~ Kent ~

pics of sundays show... more pics to come as they are e-mailed to me

what do you guys think about the new rules and how it will effect this up coming season?

this is 1 of the coolest setups iv seen in a while 6 ID MAX 12" w/ over 8k from the TruTech amps

For my box for 2 12" xcons I want to something that is lighter than mdf. What are some other types of wood people use to build light weight boxes? I was looking at Baltic birch 13 ply that can be ordered from my local hardware store at my dads for around 95 shipped there. At the Home Depot by my house has birch (not baltic) 5 ply. How much better is 13 ply than the 5? I want to call the flint lumber yard and see how much their 13 ply BB is. Is there anything less expensive that people use but is also lighter than mdf?

Alright, well as stupid as this Topic sounds, i have had a lot of questions from other people and myself. When you are building a box we all know that people don't just use 1 layer of MDF, they use 2-3 in heavy applications. In my instance, building a wall. So when i first started thinking/building my wall, i asked a older friend of mine (who is an aerospace engineer) to help me with building this. The only reason i add this in is to try and explain that he isn't a complete idiot. He also explained to me that because he works with airplanes he understands the concept of how vibrations cause things to break and how things have to be sealed. Not only that but he is very cra…

Has anyone ever put an center channel in a late 90s model Chevy / GMC ??? Truck or SUV (same dash literally where the defroster vents are concerned) ... I know there will be ALOT of work to go into this ... most likely will never happen, but, you never know... I'm not really concerned about it helping or hurting my stage and image at this time ... I'm just interested to see if it has been done ... I'm considering either a 5.25 or 6.5 driver (full range) ... Thanks in advance ...

So I keep getting told that an active front stage can be and usually is better than a passive component setup. Now, doing the front stage is very new to me. I've really only done a co-axial set powered by a 2 channel amp. I'm going to need some help with speaker selection and ways/tricks to make sure everything is installed/tuned correctly. To put a number on a budget, I would say $400. That number is just what I have set aside for the front stage currently. Sound deadening is not included with that budget. This is going into a 2014 Fusion. I don't want to cut any holes in panels and I can't fiberglass so stock locations will be used. Which is a 6.5 and tweeter. I will b…

well the time is aproaching. '06 seasoon ends in 4 months and my senior year (and project) starts in about the same time too. I will be running in Street B, equiptment is as follows. OEM TC9 w/ Death Penalty Recone 15" Starting the season with a BX1205D and as i earn money (or if i save nough over the summer) and then i will have around $300 for another amp. I have a 2000 Mazda B3000 Ext Cab 4dr, Will be running either an Optima Yellow top of Blue Top. Set me a goal. I'll have a sticker made up saying "Powered By TeamSSA" and put it across my back windsheild if i hit it. My GF's Uncle used to be a part of Team Kicker and before that Team Roxfor Fosgate. He said if i wa…

Rebuilding for my home music room, plans for the box are 7.5@26hz with 120sq in of port, 3/4" mdf, double/triple baffle (haven't decided) 1.5 all around, sub forward port forward, on spikes. Woofer is a FI BTL 18. I like Decaf and DJSNT, chopped and screwed, etc. Anything you'd advise me to change before I go and pick up wood? On 500rms for now, intend to pick up an EP2000 down the road.

yes many people are effected by proximity to events, but most are in the range of at least 2 assocations

Got new vehicle, well new to me and I beleive this to be what I will use for my project. Wife extremely unhappy that I want to do this but that is the way it is. She'll live & I'll be Boomin' !! My goal in this setup is of course "LOUD" next is hairtricks and a daily ground-pounder. My concern is port size (to small or to large) Need input on ideas on what I am putting together. Vehicle: 2002 Isuzu Rodeo 3.2 V6 Subs: 4 SA15's Amps: 2 Sundown 2000D's Enclosure will be built as a wall using trim to seal it out to the B pillar. Will be using 3/4" MDF doubled to make all sides 1.5" thick. Calculations are using allowance for .7 woofer displacement and 1 for bracing an…

as u can tell, no where to put subs under the seat. behind the seat, there is very very little space. The back seat is a 60/40 bench seat. that means one side is a seat and the middle seat, while the other seat is just 1 seat. lastly u can see that the console is not very wide, its not even 10" wide so cant even do a 10" sub there unless someone has an idea. only way i see console box working is if i downfire it, but it would be a tall box, as the sub cant mount between the seats, so it would be above the seats. so take a good 5" or more mounting depth sub, +the 4 inches to get over the seat+ 2-3 inches behind sub, it would be really tall. also behind the console, i tried…

I want to use 2 6" or 1 8" for my next box since it will allow me to tune lower and also give me more internal space using the same dimensions. But on the face of the box I can't actually use a flare like the one Adrian has or the ones that partexpress sells, because it won't fit. Now can I use a round over bit on the port opening of the wood to make it a flare? Pic below is how I made a box for 4 15s and I had 4 6" pvc pipes. It's double baffled. The front baffle was used as .75" of the port length since the pvc didn't go all the way out of the box. It only went into the inner baffle. So can I use a round over bit to make the outer baffle a flare by using the bit? I'm no…

I'm trying to figure out the main differences between inverting a sub or flush mounting it like normal. I don't know if there is sonic difference or if the main theory behind it is to just show off the backside of the driver. I've got two DPL's that I'm going to use sealed. I was thinking around 1.5^3ft each.. but if there is a way to go smaller without sacrificing SQ I could go for that too. They'll each be on a separate channel on my ARC Audio 2500CXL (rated at a conservative 270x2 @ 4ohms). My max dimensions to work with in my trunk are 16Tx26Dx35W. Of course, going smaller would be a plus.

Over the course of a few years, I've seen many different positioning ways for kick pods. Is there one way that's the best for imaging but due to the different dashboards on vehicles, you see some positioned differently? I'm assuming it also depends what speakers are mounted in the kicks. I'm using exodus ex-anarchys for midbass + midrange. http://www.diycable.com/main/product_info.php?products_id=538 I'm using peerless hds tweets for the highs. http://www.europe-audio.com/Product.asp?Product_ID=5233 Due to the size of my kick panel area and the relatively large mid driver, one of the drivers is going to be slightly tucked under the dash. I'm assuming it's better to "tuck"…

Hi I was just wanting to let everyone know that I do free subwoofer enclosure designs if anyone is interested just send me a pm with dimensions and your subwoofer model and I'll get back to you as soon as possible. Also I can build quality subwoofer enclosures at an extremely low price so if anyone is interested in that send me a pm with the subwoofer model,box dimensions,what type of music you will be listening to, and if you will be entering in any SPL competitions. My email is [email protected] and if you would like to contact me by phone my number is 901-569-3975 and ask for Spencer. EDIT: Mods if at all possible can you pin this because I don't really want to hav…