Posted by hitsware [ 24.23.25.112 ] on August 12, 2005 at 11:31:53:
In Reply to: Re: Pi Alignment ? posted by Wayne Parham on August 12, 2005 at 02:36:38:
Thanks!
Obtaining the T/S parameters is what I'm working on.
I have a 'woofer tester' that does a good job (agrees with the classic 1K Ohm method)
BUT
For some reason it goes bonkers on certain drivers (Fs 4Hz AND -Qts!)
So I'm trying to streamline my manual method.
I'd like to use the Fl & Fh = -0.707 Zmax method for Qts (since my scope has a specific graticule for this purpose) and absolute values are not needed (Zmax is set @ full scale):
Qts=((Fs/(Fh-Fl))*(Re/Zmax)...........Actually 'Qo' ????
Anyways then comes Vas (using added mass).
But if it could be calculated at this point it would be slick.
So Rou=1-(((Zmax/Zmin)-50)/10) doesn't work anymore ?
Technology Marches On ! ................. mike
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