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Tubelab Discussion and support of Tubelab products, prototypes and experiments

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Old 15th July 2019, 07:12 PM   #411
diecast is offline diecast  United Kingdom
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Default Surplus Parts for TSE - including original version specific

I have parts accumulated for the original TSE that I will never complete now. I gathered most of them years ago so there a number of now obsolete parts that came from reputable sources when they still carried them. Would anyone be interested in:
  • 16 x 2SK2700 (yes, lots!)
  • 23 x NDF02N60ZH (even more...)
  • 2 x PQ5EV5
  • 3 x the double heatsinks (=one set)
  • Snap in 450v caps - 100uF, 150uF, 220uF and 470uF
  • A bunch of different values for R14/R25
These are all new / unused. I also have a few bonus used bits and bobs. So - does anyone out there have an original TSE board they want to complete? Or one they want to fix? I am located in the UK.

Last edited by diecast; 15th July 2019 at 07:41 PM.
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Old Yesterday, 09:04 PM   #412
moggi1964 is offline moggi1964  England
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Location: Sale. UK
PM on its way to you for some of the above.
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Vista Phono1+ w/ TEAC TN-400. Loth-X Ion 1 & upgraded Genesis II+. Tubelab SE 300B + Node 2i
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Old Today, 02:37 AM   #413
itsikhefez is offline itsikhefez  United States
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After a 14 year run, the TSE must DIE!
Quote:
Originally Posted by itsikhefez View Post
On Tubelab website it is mentioned: > The 45 should be biased in the 25 to 30 mA range. I use 28 to 30 mA on 280 volts, and 26 or 27mA if operated at 320 volts.

Based on the RCA data sheet, at 275V it should be 36mA (or am I understanding this wrong?)

If this is the case, any reason to prefer 30mA over 36mA in 275-280V range?
Based on the silence of this, I will proceed with 30mA at 275V.. unless there is a compelling reason to use 36mA.

Besides that, I was curious which types people have tried in the TSE and whether any difference was observed between types (i.e, PP, Film & Foil etc)? The most relevant information I found was these quotes by George: > In this design the coupling caps work into an almost purely resistive load. This makes the coupling capacitors far less critical than they are in a conventional amplifier design. It is still an important capacitor and a low quality capacitor will still have a detrimental effect on the sound > I have not tried any Teflon caps, but some builders report good results.

Clarification: (unfortunately the editing window has expired) In the above post, I meant "which types _of coupling caps_ people have ..." Also, I don't mean to start a holy war on the topic, just some concise recommendations and impressions would be helpful
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Old Today, 07:10 AM   #414
elobilo is offline elobilo  Norway
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Location: Tønsberg
Quote:
Originally Posted by itsikhefez View Post

Clarification: (unfortunately the editing window has expired) In the above post, I meant "which types _of coupling caps_ people have ..." Also, I don't mean to start a holy war on the topic, just some concise recommendations and impressions would be helpful
I use high quality Russia telfon in my tse II and and in others, and am extremely pleased with the result in my TSE II. I also like and have used Mundorf silver gold oils in another amp but to expensive to use everywhere, especially when the excellent Russian teflons are so much cheaper and very little difference.
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