Author Topic: Steinhart Schematic  (Read 11416 times)

Offline Dark Angel

Re: Steinhart Schematic
« Reply #15 on: May 09, 2016, 09:06:59 PM »
I'm upgrading the TVP200 from PL519's to KT88's and fitting sockets so would really appreciate schematics or any information.

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Re: Steinhart Schematic
« Reply #16 on: May 10, 2016, 06:49:12 AM »
Follow the schematic for the TVP800 or any other KT88 amp in the schematics. The driver stages remain much the same but the biasing differs and of course you would need a hefty 6v supply for the filaments of the KT88.



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Offline Ampdog

Re: Steinhart Schematic
« Reply #17 on: September 28, 2016, 02:51:40 AM »
Question regarding circuit of the TVP-102dd

(The schematics from post #13, 'TVP 102dd Sound stage' and 'TVP-102dd Out + Ps' refer.)

I am looking for information on how exactly Steinhart wanted the Master Balance (R32) and Balance/channel (R20, one/channel) set. These controls are interdependant and it is not clear why both settings were made variable; either the one or the other would have sufficed. [This apart from the fine settings for each power valve: R14 (duplicated for Q1 and Q2), R15 and R16.]

If anybody has information on the original intention, I could PM or phone.

Audio must be the only branch of engineering where lack of basics' knowledge is considered a superior form of wisdom. (Anon)