Siemens | Isophon | Telefunken LSH 75K Electrostatic Tweeter for Telefunken Kaiser, 1950-1952, made in Germany

 

Link: pharoahaudio | diyaudio

The LSH-75 are single ended electrostatic tweeters made by Isophon and used in Telefunken consoles. These are very highly regarded. The text around the outside of the LSH-75 label says "Stat.Hocton-lautsprecher/Nur Uber Schutzwiderstand aufladen". They require a 220 VDC bias single ended electrostatic tweeter and are driven off the anode of the output tube of an single-ended amp or output tubes of a PP amp.

Frequency range: 5000-30000 Hz
Film depth: 10 micron
Dimensions: 75 x 75 x 30 mm