[Amps] 813's

[Will Matney]

Peter,

While on the subject, you wouldn't know the approximate G1 input impedance would you? That is with the specified plate and grid voltages on the tube. Concerning the heater position, the only way you could run these horizontal was at a certain position where the heaters width would be vertically orientated. If its width is horizontal, it can sag and short out. The 811 and I think maybe the 572-B had to be mounted the same way if I recall. It's been so long it's hard to remember.

Best,

Will

*********** REPLY SEPARATOR  ***********

On 5/28/06 at 11:32 PM Peter Voelpel wrote:

>Should be 270 Ohm
>
>73
>Peter
>
>-----Original Message-----
>From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] 
>
>    Anyone know what the input impedance of the 813 might be in g-g opn.??
>      carl / kz5ca
>
>
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