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Author Topic: 2 X 10'' speaker cab ideal dimensions  (Read 5157 times)

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Offline Colas LeGrippa

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2 X 10'' speaker cab ideal dimensions
« on: September 19, 2011, 05:49:20 am »
Hi,

I plan to build a small 2 X 10 speaker cab and I'd like to know the optimum dimensions that it should have.
I am a rock/blues player ( not the Fender tone but more the Gibson style bluesy tone ). I would go with 25w speakers ( weber ? ) open back , closed back ? Any suggestions ?

Regards

Colas
Don't miss the Woodstock experience : ''FORTY YEARS AFTER'' at Club Soda,  in Montreal, august the 17th and 18th and october the 27th. Fifteen musicians onstage.  AWESOME !
P.S.: call me Alvin.

Offline FYL

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Re: 2 X 10'' speaker cab ideal dimensions
« Reply #1 on: September 19, 2011, 09:57:19 am »
I've got a tweed cab with a pair of Weber 10A125s (20-watt version) in 560 x 450 x 240 mm open back, 18 mm pine plus a 12 mm Baltic birch plywood baffle. Works very nicely for blues/rock with a late-50s style amp and P90s or humbuckers but YMMV.




Offline Boots Deville

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Re: 2 X 10'' speaker cab ideal dimensions
« Reply #2 on: September 19, 2011, 10:47:42 am »
Here are some plans that are pretty close to FYL's dimensions, about 1.5" wider.
http://www.award-session.com/pdfs/AS210A_Plans.pdf

I've built a cab from their 1x12" plans, but never this particular 2x10".

Offline Colas LeGrippa

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Re: 2 X 10'' speaker cab ideal dimensions
« Reply #3 on: September 19, 2011, 02:05:20 pm »
FYL,

I'm not sure if I get you right, you'd sell your cab or you only wanted to give me the dimensions ?

Thanks

Colas
Don't miss the Woodstock experience : ''FORTY YEARS AFTER'' at Club Soda,  in Montreal, august the 17th and 18th and october the 27th. Fifteen musicians onstage.  AWESOME !
P.S.: call me Alvin.

Offline Frankenamp

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This problem calls for a bigger hammer!

Offline FYL

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Re: 2 X 10'' speaker cab ideal dimensions
« Reply #5 on: September 20, 2011, 02:15:13 am »
Quote
I'm not sure if I get you right, you'd sell your cab or you only wanted to give me the dimensions ?

Dimensions.


Offline Colas LeGrippa

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Re: 2 X 10'' speaker cab ideal dimensions
« Reply #6 on: September 21, 2011, 06:44:23 am »
Thank you sir

Regards

Colas
Don't miss the Woodstock experience : ''FORTY YEARS AFTER'' at Club Soda,  in Montreal, august the 17th and 18th and october the 27th. Fifteen musicians onstage.  AWESOME !
P.S.: call me Alvin.

Offline jjasilli

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Re: 2 X 10'' speaker cab ideal dimensions
« Reply #7 on: September 21, 2011, 05:05:24 pm »
For amps, Fender generally used combos with open backs.  Marshall used closed back speaker cabs.  Fender/Gibson guitars guitars sound great through either set-up.

Open back cabs are not design critical.  You can make the cab any size & shape -- as to height, width and depth -- that fits your convenience (and is stable and won't fall over!).  Closed back cabs are sensitive to size and shape, including internal volume.  This called Thiele parameters.  Ideally this should be matched to the published specs of the speakers to be used.  Info is available online; Eminence speakers I think has info on its web site.  Or plagiarize from an enclosed 2 x 10 design that you like.

Offline Frankenamp

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Re: 2 X 10'' speaker cab ideal dimensions
« Reply #8 on: September 22, 2011, 12:46:55 am »
For amps, Fender generally used combos with open backs.  Marshall used closed back speaker cabs.  Fender/Gibson guitars guitars sound great through either set-up.

Open back cabs are not design critical.  You can make the cab any size & shape -- as to height, width and depth -- that fits your convenience (and is stable and won't fall over!).  Closed back cabs are sensitive to size and shape, including internal volume.  This called Thiele parameters.  Ideally this should be matched to the published specs of the speakers to be used.  Info is available online; Eminence speakers I think has info on its web site.  Or plagiarize from an enclosed 2 x 10 design that you like.

Agreed. Most vintage utility tens and twelves were designed (mostly trial and error) to work more or less in a two cubic foot box. They didn't have T/S parameters. Speaker design and measurement were in their infancy. Nowadays, If I was to look for a speaker to work well in an open back box, I would look for a speaker with a Qts of .7 to 1.0 give or take. This will allow the response to roll off smoothly around the resonant frequency (Fo). A lower Qts will sound thin and anemic as the bass rolls off quicker. A Qts above 1 will start to sound boomy and unnatural. These are some rules of thumb that work most of the time. YMMV. A woofer tester and some box modeling software are necesesary for accurate results. Golden triangle dimensions are also usually ignored by guitar box designers. Have Fun!
This problem calls for a bigger hammer!

 


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