Hi,
yesterday i managed to buy a pair of used K33E´s on Ebay for an intended DIY LaScala projekt (Not easy to get in Germany). I took them home and measured the TSP. From posts on AA I expected something like: fs=35HZ and qts=0.4.
To my surprise i got:
fs=25HZ, qms=2.6, qes=0.313, qts=0.28, z(fs)=29 OHM
The readings were quite the same on both woofers.
Is an fs=25HZ normal for used K33, are the spiders worn out or are the posted parmeters wrong ? Measuring was done with constant voltage method, Um=1V.
Many thanks for information,
Volker