You need the Thiele-Small parameters for that 12" driver before you can do anything meaningful.
You can try to find them from the manufacture, if they will even publish them.
You may find someone that has already measured them.
Or, the best way is to measure them yourself, but the process is not trivial.
You can also just build a box larger than you think you need and add wood inside to reduce the internal volume until you get what you want.
A rough guess would be 2 or 3 cubic feet.
Lastly, you can just use the same volume for the enclosure that the driver came out of.
You can try to find them from the manufacture, if they will even publish them.
You may find someone that has already measured them.
Or, the best way is to measure them yourself, but the process is not trivial.
You can also just build a box larger than you think you need and add wood inside to reduce the internal volume until you get what you want.
A rough guess would be 2 or 3 cubic feet.
Lastly, you can just use the same volume for the enclosure that the driver came out of.
Response to Gnaman
Dear Gnaman -
For the money ($100) and ease of use, The Woofer Tester is useful. For further info, go to:
http://www.parts-express.com/pe/showdetl.cfm?Partnumber=390-803
You can hook it up to a laptop or desktop computer and directly measure the Thiele-Small (T/S) parameters.
For speaker enclosure design, there are many free software programs at various sites:
Steve Ekblad - http://www.audiogrid.com/audio/
Google Search:
http://www.google.com/search?hl=en&safe=active&q=free+loudspeaker+software
Much good luck to you,
Speakerman
Dear Gnaman -
For the money ($100) and ease of use, The Woofer Tester is useful. For further info, go to:
http://www.parts-express.com/pe/showdetl.cfm?Partnumber=390-803
You can hook it up to a laptop or desktop computer and directly measure the Thiele-Small (T/S) parameters.
For speaker enclosure design, there are many free software programs at various sites:
Steve Ekblad - http://www.audiogrid.com/audio/
Google Search:
http://www.google.com/search?hl=en&safe=active&q=free+loudspeaker+software
Much good luck to you,
Speakerman
They use it in a tube 660 x 346, that will give you a good reference for volume:
e.g. 660 is close to 24" (L=2) and 346 is close to 12" (R=.5) use an on line calculator equals: 1.57cf
JBL CS1215 T
e.g. 660 is close to 24" (L=2) and 346 is close to 12" (R=.5) use an on line calculator equals: 1.57cf
JBL CS1215 T
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