Red Sun RSW-1244
(on the manufacturer web-site - paremeters missing).
12" dual coil (2x4 Ohm). 40oz magnet.
What I'v measured - Fs=34Hz, Vas=122L, Qts=0.9, but (!) I have some information, that the parameters should be the folowing:
31Hz/65L/0.38, so maybe my measurements were wrong.
If anybody knows this woofer and it's parameters - please tell me !
(on the manufacturer web-site - paremeters missing).
12" dual coil (2x4 Ohm). 40oz magnet.
What I'v measured - Fs=34Hz, Vas=122L, Qts=0.9, but (!) I have some information, that the parameters should be the folowing:
31Hz/65L/0.38, so maybe my measurements were wrong.
If anybody knows this woofer and it's parameters - please tell me !
An externally hosted image should be here but it was not working when we last tested it.
If you want to check the parameters and it's brand new, please run it a moderate excursion for maybe 24 hours, don't drive it too hard, the suspension will be less stiff after that and Q will change.
Simon5, now its running at 50Hz from a mains transformer 🙂
Yes, it is brand new, but you realy think that is possible, that Vas and Qts would be less more then twice ?!
Yes, it is brand new, but you realy think that is possible, that Vas and Qts would be less more then twice ?!
I hope the woofer is not alone on the socket... hehe.
Well, if you follow these steps to measure the T/S parameters correctly, I guess you got the right parameters. http://www.diysubwoofers.org/measure.htm
Don't forget that maybe they took the T/S parameters with one voicecoil shorted, or one voicecoil open, or both voicecoils in parallel, or both voicecoils in series... If you only use one voicecoil, you can play with Qts almost as much as you want to...
Did you try to ask to the manufacturer?
Good luck!
Well, if you follow these steps to measure the T/S parameters correctly, I guess you got the right parameters. http://www.diysubwoofers.org/measure.htm
Don't forget that maybe they took the T/S parameters with one voicecoil shorted, or one voicecoil open, or both voicecoils in parallel, or both voicecoils in series... If you only use one voicecoil, you can play with Qts almost as much as you want to...
Did you try to ask to the manufacturer?
Good luck!
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