Ok folks.
I'm a fan of documentary channels, National Geographic comes to mind.
As I watch much German satellite TV channels (lived there) , I've seen a documentary of the Germania city Hitler wanted to build...
For the older people here, I was wondering what kind of amplifiers and speakers were used that days for amplifying the voice of the "Fuehrer" speaking at the 1936 Olympic games for 100000 seats.
I Believe mikes were those round Neuman type with 2 screws in the back for connecting the wires but the amplification ...
I mean these had to be valve stuff. Did kW amplifiers and speakers existed at that time ?
Thank you for your attention
I'm a fan of documentary channels, National Geographic comes to mind.
As I watch much German satellite TV channels (lived there) , I've seen a documentary of the Germania city Hitler wanted to build...
For the older people here, I was wondering what kind of amplifiers and speakers were used that days for amplifying the voice of the "Fuehrer" speaking at the 1936 Olympic games for 100000 seats.
I Believe mikes were those round Neuman type with 2 screws in the back for connecting the wires but the amplification ...
I mean these had to be valve stuff. Did kW amplifiers and speakers existed at that time ?
Thank you for your attention
Antique Radios, 276 831 Antique Radios listed has pdf copies of most of the early (late 1920s onward) Funkschau periodical on file. You should find some info there.
turk: Interesting link, thanks. E
turk: Interesting link, thanks. E
Those drivers must have been VERY efficient.
Fully horn loaded, boast use of permanent magnets (Alnico?) "so you don´t have to run a dedicated power line to the speaker" and had very advanced area distribution systems: they were mounted inverted on tall poles, radiating at a downwards angle inside a defined diameter ring so there would not be interference and the dreaded "racetrack echo" found on most other large systems.
That they achieved this only some 15 years after the invention of the loudspeaker is impressive and certainly must have been the best PA system in the World.
They also were the first to televise sports, and although there were only 75 TV receivers in all of Berlin, they were mounted in public viewing sites to general public could have a taste of televised sports.
Fully horn loaded, boast use of permanent magnets (Alnico?) "so you don´t have to run a dedicated power line to the speaker" and had very advanced area distribution systems: they were mounted inverted on tall poles, radiating at a downwards angle inside a defined diameter ring so there would not be interference and the dreaded "racetrack echo" found on most other large systems.
An externally hosted image should be here but it was not working when we last tested it.
That they achieved this only some 15 years after the invention of the loudspeaker is impressive and certainly must have been the best PA system in the World.
They also were the first to televise sports, and although there were only 75 TV receivers in all of Berlin, they were mounted in public viewing sites to general public could have a taste of televised sports.
An externally hosted image should be here but it was not working when we last tested it.
Multi-kW radio transmitters certainly existed and had done so since the early 1930s. As each of these needed a multi-kW audio modulator we can be sure that the technology existed.
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