In Reply to: Da Siemens Post Tube - which driver tube? posted by iodemus on December 15, 2019 at 02:18:57:
Hi,
do you think it is worth copying old schematics with outdated bandwith ratings? They are interesing tho. And very hard to read with all wiring drawn. I have seen one Siemns 1930ies Da amp with all testpoints wired to elsewhere.
A Ba requests for 25k 1:1 IT, Aa is ven higher at 30k. Z2b rectifier mates nicely.
Will you sell a pair Cd tubes?
kindly,
Anton
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Follow Ups
- schematics were on the inside of the lids of units - lk4330 10:43:30 01/15/21 (0)