I have MJK's free sheets,but I'm nowhere near routine you two obviously have with this......
so -can I direct your attention to one old thread :
http://www.diyaudio.com/forums/showthread.php?postid=919737#post919737
anyway, here is pasted txt :
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Anyone willing to solve this case ?
I need measures for tall (not folded) TQWT
I know that overall dimensions are not critical,but vent certainly is;
This is what I measure ,using procedure from JBL Speaker Shop.
Unfortunately,I don't have way to measure Xmax,if needed
TIA
old Scan Speak Alnico driver
21W38
Fs=64Hz
Qms=3.054
Qmc=3.308
vas=20.6L
Cms=0.2508mm/N
Mms=24.66gr
Rms=3.246kg/s
Sd=240.52cm^2
Qes=1.155
Re=3.7E
Bl=5.6537
Qts=0.83
Eff=0.4509%
Spl=88.74db
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willing to spend 5 min on that?
I really don't ask for more.............mebbe just for one 8" FR .......
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