DIY a baffle for JBL fullrange and super treble Celestion - diyAudio
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Old 17th September 2012, 11:42 AM   #1
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Post DIY a baffle for JBL fullrange and super treble Celestion

Hi all,
I have a pair of JBL 2120 Pro and super treble Celestion ballet, I want to make a new baffle for them. I have find on internet already but didnot have any details for JBL driver like this .
Please could you help have a suggestion or document/picture drawing?
Thanks you
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Old 19th September 2012, 12:02 AM   #2
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Default JBL 2120 Pro loudspeaker

Quote:
Originally Posted by YaoSiTing View Post
Hi all,
I have a pair of JBL 2120 Pro and super treble Celestion ballet, I want to make a new baffle for them. I have [looked] on the internet already but didnot find any details for JBL driver like this .Please could you help or have a suggestion or document/picture drawing?Thanks you
Hi there YS: I googled, jbl 2120 pro louadspeaker and found the following information:
Extended range transducer, 50hz to 8,000hz, Imp. 8 ohms, 60 watts contineous, 98db at 1w/1m, Fs=65hz, 3-inch edge wound aluminmum voice coil, BL=1.4x(10)7. Pictures too.
However this information provided by JBL is insufficient to design an enclosure (computer program or charts) with out other T/S parameters: Qes, Qms, Qts, Vas, Re, Le, Sd, Xmax.
Note that Qts can be calculated easily from Qes and Qms. Xmax should be known for a complete design. Sd can be estimated from the drivers frame size (results will vary with your estimate)
If you can not find the required T/S parameters, you can measure them easily with a WT 3 instrument available from Parts Express, see their on line catalog, page 168 $99.88usd.
....regards, Michael
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Old 19th September 2012, 08:44 AM   #3
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Thanks Michael for quickly feedback,
I understand your advice, but I dont have much knowledge about this. I'm looking for a Bass reflex enclosure plan that can using for my JBL fullrange driver and supper treble HF-50 (optional). The baffle plan is as simple as good for me.
Any idea for this?
Thanks for any feedback
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Old 19th September 2012, 08:48 AM   #4
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Please updated with more information details of JBL and Celestion treble
Attached Images
File Type: jpg JBL 2120.jpg (153.9 KB, 67 views)
File Type: jpg HF50.jpg (195.4 KB, 67 views)
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Old 21st September 2012, 04:20 AM   #5
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Hello, anybody here! Please help
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