Hello,
I bought a pair of the aforementionned drivers at an auction type thing for a fairly low price.
The problem is that the T/S parameters I measured are pretty much out of whack! Most disturbing is that Fs is at ~84Hz instead of 55Hz... Qms/Qes are 1.03/0.77 instead of 1.4/0.55, but since they also depend on Fs, I'm not looking into that first.
I'm certain my measuring method is not at fault here as I used it many times and successfuly so.
I understand Q parameters are often a bit off from datasheets, but Fs??? And by that much???
If you have ever measured this driver, I would like to know if you had it do similar things.
Thanks!
IG
I bought a pair of the aforementionned drivers at an auction type thing for a fairly low price.
The problem is that the T/S parameters I measured are pretty much out of whack! Most disturbing is that Fs is at ~84Hz instead of 55Hz... Qms/Qes are 1.03/0.77 instead of 1.4/0.55, but since they also depend on Fs, I'm not looking into that first.
I'm certain my measuring method is not at fault here as I used it many times and successfuly so.
I understand Q parameters are often a bit off from datasheets, but Fs??? And by that much???
If you have ever measured this driver, I would like to know if you had it do similar things.
Thanks!
IG