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Which driver tube for RE604 - some alternatives:

Posted by iodemus (A) on September 2, 2015 at 12:37:39

In Reply to: RE: Operating point for RE604? posted by Caucasian Blackplate on September 2, 2015 at 08:24:21:

EML30 is an interesting tube, but it requires too much alterations to the monoblocs. High Va and Ia which require change of the transformers etc.

What about some of these which will fit in without too much alterations:
(I have some of them):

TUBE Va Ia Vg S(SC) MU Ri Ra
KC3 135 3 -2,8 2,5 25 10
3A/110B 130 12 4,5 5,5
RE074 150 3,5 -9 0,9 10 11
RE084 150 4 -4 1,5 15 10
26 135 5,5 -10 1,1 8,3 7,6
B409 250 12 -16 2 9 5 12
RE134 250 12 -17 2 9,2 4,6
101D 130 -4 6 5,7
Ca 220 20 -12 1,7 1
Cd 130 25 -8 3 6 3 2
Cf 130 25 -8 3 6 3 2

C3m is also a candidate if triodeconnected, but it is not a DHT.

Johnny

Edits: 09/02/15

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