Please post pics of original 300 B tube amps

[Spareribs]

I read somewhere that the first 300 B tube amps were made by Western Electric company and they were originally used for amps in movie theaters.

To me, that is so fascinating!

I tried to find a pic on the internet of the original 300 B amps from the 1930s but could not find any. If you have a pic of the original 300 B amps from that era, please post them! I am curious.

Also, if you general have pics of tube amps from that era as well (ca. 1930s and 40's) , feel free to post them too.

[Afrikane]

Not 300B specifically but this guy has some interesting old Western Electric amps. Moviemice also has some good history of cinema amps.

[Nick 214]

I'm not so sure on that...

From what I understand, the 300B was originally developed, by WE for use in amplifying signals in long-distance telephone systems...

Nick

[Afrikane]

That's the history I am familiar with too Nick. The original 300Bs were made by Gray & Barton for telephone equipment which later (1872) became Western Electric.

[Spareribs]

That's an awesome pic. Thanks.

According to this article, The 300 B tube was used in movie theatre amps. If they were used by the telephone company as well and with movie theaters, I'm curious which application came first.

The article:

Antique Radio Classified: The 300B Tube Lives Again!

The article also states that the 300 B was used in military equipment and amature radio. If anyone has pics of the 300 B in military equipment and amature radio or from any application from that era, please post them.