Interesting bit of history . . .

Interesting bit of history . . .

I recently picked up a single Electro-Voice A20C Circlotron amplifier in
nice shape. Below is a link to a photo (not mine, but similar) and a
manual. Interesting circuit!

w w w .yaegerudio . com /a20c.jpg

w w w .yaegerudio . com /a20c.pdf

Re: Interesting bit of history . . .



Jon Yaeger wrote:

> I recently picked up a single Electro-Voice A20C Circlotron amplifier in
> nice shape. Below is a link to a photo (not mine, but similar) and a
> manual. Interesting circuit!

Well fancy that ! It's a design I was looking at only recently.

Is it in working condition ?

Graham

Re: Interesting bit of history . . .

in article 4813C0E9.7D5EB51D@hotmail . com , Eeyore at
rabbitsfriendsandrelations@hotmail . com wrote on 4/26/08 7:55 PM:

>
>
> Jon Yaeger wrote:
>
>> I recently picked up a single Electro-Voice A20C Circlotron amplifier in
>> nice shape. Below is a link to a photo (not mine, but similar) and a
>> manual. Interesting circuit!
>
> Well fancy that ! It's a design I was looking at only recently.
>
> Is it in working condition ?
>
> Graham
>


I think so. The owner was the original, and he kept his gear in good
repair. All of the tubes test fine. I'll need to reform or replace the
electros before I know for sure.

Jon

Re: Interesting bit of history . . .

On Sat, 26 Apr 2008 18:06:10 -0400, Jon Yaeger <jono_1@bellsouth . net >
wrote:

>I recently picked up a single Electro-Voice A20C Circlotron amplifier in
>nice shape. Below is a link to a photo (not mine, but similar) and a
>manual. Interesting circuit!
>
>w w w .yaegerudio . com /a20c.jpg
>
>w w w .yaegerudio . com /a20c.pdf

Looked good once I put the "a" back in audio ;)