Early German Cinema ESL ! - 1920's -

[NewVista]

Anyone know how they made the Tri-Ergon Cinema ESL in the 1920's ?

Exhibit of Tri-Ergon optical film sound at Munich Museum:

http://www.deutsches-museum.de/en/c...te-objekte/meisterwerke-v/tonfilmprojektor/?0=

 

[NewVista]

Here's some English from text:

"absolute synchronization of soundtrack Filmund,

Konstruktion von Lautsprechern, die nach elektrostatischen Prinzipien ganz neu entwickelt werden mussten.​

(Design of loudspeakers, which are developed by electrostatic principles throughout rebuilt)."

All information about these amazing early ESL's appears to have been lost as Museum only has Projector + some audio electronics. As this was also during the period of the Weimar Republic Hyperinflation? A time of economic collapse.

 

[beun]

Better translation:

Construction of loudspeakers on electrostatic principle which had to be completely developed from scratch.