[Johnson] Thunderbolt question: Matched finals needed?

[Glen Zook]

You really don't need "matched" pairs, especially when
the tubes are run in parallel.  Also, after just a
short period of operation most tubes age at a
different level and matching isn't any good any more!

A 4 pin microphone plug like was used on the older
Motorola, General Electric, etc., will fit the
connector.

DO NOT even turn on the linear without the bias plug
hooked up correctly.  You will wipe out the final
tubes in a very short period of time unless the proper
bias is applied.

Glen, K9STH

--- Stephen Victor <victorsj@yahoo.com> wrote:

Can I replace just that one, or is a "matched pair"
needed?

does anyone know where I can get the 4-pronged bias
plug to fit the socket in the back of the chassis? 

=====
Glen, K9STH

Web sites

http://home.attbi.com/~k9sth
http://home.attbi.com/~zcomco

__________________________________
Do you Yahoo!?
Yahoo! Calendar - Free online calendar with sync to Outlook(TM).
http://calendar.yahoo.com