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FAQ ] |
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Date: September 21, 1997 at 11:51:31
From: Mr J Reynolds, [user41.max30.msn-uk.pipex.com]
Subject: Sealed Boxes |
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All I want to know is the dimensions of the box I should make for a pair of 9" cone sub woofer speakers for in car use (300 watts output per speaker).
Please can someone out there help???
Posted with TalkShop version 2.55
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[3733] [3777] [3732] [3645] [3736] [17320] [3780] [3656] [3646] [3290] [3184] [3385] [6687] [3196] [3156] [3173] [3185] [578] [3046] [3083] [3085] [3096] [3056] [3050] [579] [5] [140] [99] [17210] [17241] [6290] [2000] [5033] [406] [6223] [6227] [2451] [6180] [5454] [5254] [2453] [2459] [2454] [2452] |
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3733 |
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Date: April 27, 1999 at 20:03:39
From: Brandon, [ncgd-pri1-a18.lcc.net]
Subject: Re: Sealed Boxes |
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Does anyone know the demensions I should use for 2 cadence 12" to put under the ext. cab seat of a 97 dodge?
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[3777] |
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3777 |
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Date: May 03, 1999 at 13:16:50
From: Hyper-Cube, [neptune.bt.com]
Subject: Around 15 Seconds!! |
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Sorry to be sarky but give a dimensionless question and get an almost dimensionless answer.
Give us some useful information to go with. 3 things required VAS,QTS and FS. If you cannot get these go with manafacturers specs.
Have a wander round this site to get a grounding in what it's all about.
Good Luck
Hyper-Cube
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3732 |
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Date: April 27, 1999 at 20:01:54
From: Brandon, [ncgd-pri1-a18.lcc.net]
Subject: Re: Sealed Boxes |
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Does anyone know the demensions I should use to put under the ext. cab seat of a 97 dodge?
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3645 |
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Date: April 15, 1999 at 17:14:46
From: Joe, [213-a-37-117.ppp.mcleodusa.net]
Subject: Box Dimensions please |
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Hi, I have two 10" subs, only 100 watt, nothin fancy. I have a regular cab truck and not very much space behind the seats. I have made a separate box for each sub, and the dimensions make it just under .5 cubic feet in volume. Is this too small, what will happen if I use this? Any help would be greatly appreciated!
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3736 |
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Date: April 27, 1999 at 23:25:44
From: Ross, [spider-tr063.proxy.aol.com]
Subject: Re: Box Dimensions please |
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Looking for exact or close to that, the dimensions for a pair of boxes for two Rockford Fosgate 12 inch Punch woofers. Need ASAP. would be very grateful and will contribute to the info needed. Ross
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17320 |
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Date: December 13, 2001 at 19:43:26
From: Dustin, [65.33.21.41.cocoa-ubr-a.cfl.rr.com]
Subject: Re: Box Dimensions please |
URL: My Website |
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If your looking for the volume of the driver itslef, I have Fosgate Specs.
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3780 |
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Date: May 03, 1999 at 17:54:34
From: RIP, [van7d19.dial.uniserve.ca]
Subject: Re: Box Dimensions please |
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Hey. I have here dimetions for a SEALED box
which will fit your Rockford 12's. Here are
the numbers:
28" W • 14" 1/16 H • 18" 1/8 D1 • 11" 3/8 D2
I hope you comprehend all this. If you are a
little shady still, I got these numbers from
a magazine which you can order online at:
www.crutchfield.com
you have to dig a little to find the online
registration and it will take about 2.5 weeks
to be delievered, but the magazine is worth
having! Good luck with your box, this subs
wil
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3656 |
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Date: April 16, 1999 at 13:08:40
From: Hyper-Cube, [neptune.bt.com]
Subject: Driver Parameters Please |
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Post your Thiele/Small parameters, these are Qts,Vas + Fs and a box size & tuning will be rendered available, additionally as I believe you have already made the box, I will be able to see what performance you have got if you use it. Is it 1 box and 2 drivers or 2 boxes 2 drivers. Generically, 1 * 10" would probably be o.k in a 0.5ft³ box, especially if it was sealed. Anyhoo, post and let's see
Regards
Hyper-Cube
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3646 |
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Date: April 15, 1999 at 22:40:52
From: BKing, [sd-ppp-182.abac.net]
Subject: Re: Box Dimensions please |
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Box volume (dimensions) are large determined by the woofer's "Qts" parameter. Usually the manufacturer provides this data for you. The Qts determines whether the box is sealed or ported to best take advantage of the woofer's performance capabilities. For example, if a woofer designed for a ported box is placed in a sealed box, its low frequency performance will not be as good as it would be in its properly designed enclosure.
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3290 |
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Date: March 08, 1999 at 01:46:06
From: Jon, [pppt04-164.ght.iadfw.net]
Subject: Re: Sealed Boxes |
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Does a box or a tube work better for a 10" JBC 500 watt sub?
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3184 |
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Date: February 22, 1999 at 21:02:38
From: Owen Donnelly, [spider-tq014.proxy.aol.com]
Subject: Big Box |
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I need help building a box for 3 JL 15"s, does anyone have a suggestion?
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[3385] [6687] [3196] |
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3385 |
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Date: March 14, 1999 at 19:28:01
From: jason byron, [atl2-wc2.atlas.digex.net]
Subject: speaker box dimensions |
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need help designing a box for two pyramid 15"super pro series and two 12" orian xtr to fit in the bed of a chevy s-10.
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[6687] |
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6687 |
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Date: February 07, 2000 at 13:41:27
From: Jools, [vic-dial-196-2-45-139.mweb.co.za]
Subject: Re: speaker box dimensions |
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need to know what dimensions are best for 300w sub,want to make spk box with tweater.
Also need to know what tweaters to get and modle crossovers sizes
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3196 |
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Date: February 23, 1999 at 13:48:56
From: JohnC, [accs17-66.ttu.edu]
Subject: Re: Big Box |
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Since they are JL's, I take it is for car use? If it were for a house I would definitely say build three boxes and just stack them together. This is not as easy to do with a car box. Maybe if you are very creative and have very good building skills. Most likely, just make sure once its built it will fit into (and out of) the opening for trunk hatchback or whatever(if it is going to be a close fit, try a cardboard mockup to be certain, don't laugh it works great! I did this for a box to go behind the seat of my regular cab truck, and found out it didn't fit; saved some time frustration and wood). A few friends around helps. In any case with 15" JL's you will need good bracing of the box, 2x2 is very cheap and works quite well, brace from top to bottom and the sides. Definitley account for the volume of the bracing when calculating box volume, you'll be sticking quite a bit of wood into it.
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3156 |
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Date: February 19, 1999 at 21:34:25
From: Darren Ray, [rddrpx03-port-63.agt.net]
Subject: Re: Sealed Boxes |
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I have a pair of JBL Power Series 12's. They Handle 280 rms each. Smallest enclosure reccomended is 1 cubic foot. Recomended size is 1.5 cubic feet. If you could tell me some good dimensions for that size for a sealed box would be appreciated.
D-Ray
Wappyflap@hotmail.com
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3173 |
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Date: February 21, 1999 at 22:52:05
From: Brian, [ras2.spiceisle.com]
Subject: Re: Sealed Boxes |
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Here's what you need to do:
- First, decide on what SHAPE box you want to use. Square? Rectangular? Circular? The rectangular box is probably the easiest to make, so let's use rectangular for this example.
- Now, you're using 12" drivers, right? That means that at least one dimension of your box has to be more than 12". Let's set this to 14", which leaves an inch of clearance on each side of the driver.
- Each driver has a minimum mounting depth. The specs for my driver suggest that there must be at least 3" of clearance behind the driver. Let's assume your driver is 5" deep. This sets another minimum dimension of 5"+3" = 8".
- The driver itself will occupy some space in the enclosure. Let's say this is about 0.1 cu.ft. This means that the box has to be 1.5+1.1 = 1.6 cu.ft. in size.
- Working with the minimum dimensions given above, we can calculate the last dimension as follows: L = 1.6*12^3/(14*8)=24.7". Required INTERNAL dimensions for the box are therefore 14"x8"x24.7"
- If the last calculated dimension is too large (remember, these boxes have to fit in your car - add 1.5" to each dimension, then work out if they'll fit!), try increasing one of the other dimensions. For example, L1 =1.6*12^3/(15x8)=23", and required INTERNAL dimensions are therefore 15"x8"x23".
Brian
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3185 |
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Date: February 22, 1999 at 23:18:46
From: Silver_Bullet, [blues2.si-net.com]
Subject: Re: Sealed Boxes |
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Where did you get the 1.6*12 cubed? why do you cube the twelve? Thanks alot
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578 |
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Date: May 09, 1998 at 06:09:07
From: Perry, [chrome.one.net.au]
Subject: Re: Sealed Boxes |
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yeah,
I have a pair of 10" subwoofers and i want to build a box for them. What material is needed for the box and what dimensions are needed to suit these 10" babies???
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[3046] [3083] [3085] [3096] [3056] [3050] [579] |
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3046 |
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Date: February 09, 1999 at 17:40:31
From: Matt Hoff, [mizzou-as3-05.missouri.edu]
Subject: Re: Sealed Boxes |
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I have a pair of 10" Pioneer subwoofers(350watts), what are the dimensions for the box and what material should be used
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[3083] [3085] [3096] [3056] [3050] |
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3083 |
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Date: February 14, 1999 at 03:23:31
From: OC , [ip107.chicago13.il.pub-ip.psi.net]
Subject: Re: Sealed Boxes |
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3/4" MDF (medium density fiberboard) should be used and it should be coated with a layer of poly-urethane. This is because the MDF is poreous and air seeps through. As far as the volume goes, sealed enclosures require less internal air volume than say a vented enclosure would. In most cases the sealed is 25% smaller.
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[3085] [3096] |
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3085 |
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Date: February 14, 1999 at 14:12:05
From: Kelly McDonald, [24.65.2.63.bc.wave.home.com]
Subject: Re: Sealed Boxes |
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Pourous?? You must be using a different grade of MDF than I. I tried to stain my MDF box and most of it wiped right off.
Is there such a thing as HDF???
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[3096] |
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3096 |
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Date: February 15, 1999 at 14:08:40
From: Hyper-Cube, [193.113.139.185]
Subject: HDF does exist,ask your local lumberyard (NT) |
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3056 |
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Date: February 10, 1999 at 17:34:11
From: Richard Greene, [internet6.ford.com]
Subject: Re: Sealed Boxes |
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Use 3/4" MDF wood or a Sonotube (concrete column form) with 3/4" MDF endcaps.
3/4 inch plywood is an alternative.
Don't use particle board or cheap plywood with voids (holes) inside and with unfinished
surfaces.
Size should be in the one to two cubic feet
per driver range, assuming the 10" drivers are typical car drivers. I'm guessing, of course -- give us some driver specs and you'll get more than a wild guess.
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3050 |
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Date: February 10, 1999 at 02:50:13
From: rwn, [port786.hat.netdoor.com]
Subject: Parameters needed. |
URL: Subwoofer DIY Page |
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I suggest that you read the entire website for this forum, then repost your request more precisely.
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579 |
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Date: May 09, 1998 at 06:22:43
From: Affandi, [handel.pacific.net.id]
Subject: Re: Sealed Boxes |
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To answer your first question, I'd recommend an MDF panel of at least 3/4" thick. As far as your second question is concern, you'll need to find out the T/S parameter and crunch in the numbers into Mr. Brian's sealed box program until you find the kind of curve that suits you most.
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Date: September 21, 1997 at 13:17:42
From: Brian, [Local SpiceIslander]
Subject: Re: Sealed Boxes |
URL: The Subwoofer DIY Page v1.1 |
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The answer depends on the T/S parameters for your speakers, as these parameters will dictate the box size required to get the best results.
Usually the T/S parameters are provided in the documention you got with the speakers, or perhaps you can get them directly from the manufacturer.
If you want to try the "wet finger in the air" approach, a 0.75 cu.ft. box for each driver, tuned to taste with fiberglass stuffing in each box, may produce good results.
Regards,
Brian
Posted with TalkShop version 2.55
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Date: December 18, 1997 at 13:57:06
From: mathieu roy, [207.219.169.156]
Subject: Re: power acoustic sub parameter |
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i want the driver parameter of xps 850 and xps 1060 please send me a email if have this parameter .
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99 |
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Date: November 13, 1997 at 17:54:47
From: tyson, [SHS-233-04]
Subject: Re: Sealed Boxes |
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hey whats up,
could you give me some measurements for a 12" and a 15" subwoofer thanks
tyson
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Date: December 10, 2001 at 14:18:57
From: eT, [intergate]
Subject: Re: Sealed Boxes |
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can someone tell me how to make and the dimmensions for a single 15" sealed sub box with a 2 cubic foot interior? thnx
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17241 |
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Date: December 11, 2001 at 15:57:35
From: Jason U., [cx2051204-a.poria1.az.home.com]
Subject: Re: Sealed Boxes |
URL: Electro's Realm |
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First convert cu. ft. to cu. in.. For example
cu. ft. X 1728 = cu. in
1728 is the number by taking 12 to the third power. In english terms it is V = H * D * L (1728 = 12 * 12 * 12).
Then take that number to the cube root or
cu. in.(1/3). This will give the multplier for a 6 sided box. Then plug in either the golden ratio (0.618:1:1.618) or acoustical ratio (0.7937:1:1.2599). You can make a cube like box or a custom ratio because box modes will be higher than the used frequency spectrum.
It is mostly geometry skills. Then add 1.5 to each final measurement if you are using 3/4 MDF board because two 3/4 in thick board is 1.5 in.
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6290 |
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Date: January 04, 2000 at 19:37:20
From: JOhn, [abd5327a.ipt.aol.com]
Subject: Re: Sealed Boxes |
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Yeah you can get a nice box to fit a fat dick in it you prick
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2000 |
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Date: November 05, 1998 at 02:04:05
From: jason, [sfr-qbu-pqm-vty58.as.wcom.net]
Subject: Re: Sealed Boxes |
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i was wondering if anybody had drawings for a box that would hold 2 15" rockford fosgates. My car is a 72 oldmobile cutlass.
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[5033] |
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5033 |
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Date: September 22, 1999 at 20:46:38
From: matt, [98a78baf.ipt.aol.com]
Subject: Re: Sealed Boxes |
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i dont know of any, but im looking, and i was going to do the same thing with my 87 delta 88, so if you find anythign tell me at fa97bike@aol.com
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406 |
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Date: April 05, 1998 at 13:46:18
From: Steven , [t25.skantech.com]
Subject: Re: Sealed Boxes |
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I have a jbl 15 inch speaker how big should my boxe be and what kind of box would be the best for it
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[6223] [6227] [2451] [6180] [5454] [5254] [2453] [2459] [2454] [2452] |
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6223 |
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Date: December 26, 1999 at 03:50:25
From: Galen, [spider-wn082.proxy.aol.com]
Subject: Re: Sealed Boxes |
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I am looking for some plans for either a vented or sealed box for 2 12' subs. I need some plans so if you know where to get them or have plans I would greatly appreciate it.
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6227 |
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Date: December 26, 1999 at 20:59:50
From: BKing, [dt016n8e.san.rr.com]
Subject: Re: Sealed Boxes |
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Go to the DIY section at www.sdinfo.com and look at the home theater project for under $1000.
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2451 |
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Date: December 11, 1998 at 04:41:27
From: wayne steed , [p13-m2-na3.dialup.xtra.co.nz]
Subject: Re: Sealed Boxes |
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i have 12 inch 200w 8ohm subs which need 65 litres each. What size do i make my speaker boxes.
These speakers are for home not car
i am also mounting 2 midrang speakers and a horn
tweeter on thease boxes
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6180 |
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Date: December 20, 1999 at 01:17:31
From: Ted Taylor, [ebt35.sat.net]
Subject: Re: Sealed Boxes |
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Hy, my name is Ted Ttayor. I am doing an Sience Fair prodject on sealed speaker boxes and I was wondering if you could send my one of the beat boxes that you have. I know that it would be free to me but if you send it to me I will send the mony that you want. My address is,
Isabel S.D.
P.O. Box 365
Isabel S.D. 57633
Please if you do send me this box make sure that it's speakers size is 12in.
Thank You.
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5454 |
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Date: October 31, 1999 at 03:03:47
From: Devin Crocker, [ts002d46.por-or.concentric.net]
Subject: Re: Sealed Boxes |
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You have a lot of options. You can make many different sealed boxes. You can either have a dual sub style, which mounts to two subs in a box that is 4.46 cubic feet, with no seperator. This will be a fairly big boc becasue your subs require so much volume space. or you can make a push pull sub box, front to back isobaric box, back to back isobaric, or piggyback isobaric. All those are harder to build, I would recommend the first one I mentioned.
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5254 |
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Date: October 16, 1999 at 10:59:39
From: chris, [rno-max6-24.gbis.net]
Subject: Re: Sealed Boxes |
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2453 |
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Date: December 11, 1998 at 06:01:54
From: Oscar, [asp2]
Subject: Re: Sealed Boxes |
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65 liters each? That turns out to be 2.3 ft^3 each.
How would you know if the box volume is 2.3 ft^3: Decide on two of the dimensions of the speaker box, take (2.3*1728) and divide it by the product of the lengths you chose. That will give you the third length.
And of course, don't forget to account for driver and port displacement.
Oscar
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2459 |
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Date: December 11, 1998 at 12:11:59
From: JohnC, [accs16-61.ttu.edu]
Subject: Re: Sealed Boxes |
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Often the box is built to some ratio. For example 4:5:6 is a short squatty box that does not use a lot of wood for a given volume. basically box volume V=4y5y6y
solve for y by taking cube root of V then multipy y by 4 to get the length of the side and so on. Again this is inside dimension.
Off hand I can not think of any others, but you don't what to produce to much of a tower type box, possibly could produce a pipe effect.
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2454 |
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Date: December 11, 1998 at 06:05:40
From: Oscar, [asp2]
Subject: Dimensions=Interior Dimensions(nt) |
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2452 |
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Date: December 11, 1998 at 05:15:21
From: paul, [spider-to051.proxy.aol.com]
Subject: Re: more info |
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We need to know the make,model, and if possible the Thiele/Small parameters, otherwise your guess is as good as mine
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