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RE: 6SN7 circuit

I said comparatively low gain. The max. theoretical gain for a 1 grid driven LTP is μ/2. 6SN7 μ = 20. As drawn, the hybrid exhibits approx. 17 dB. of gain. If that's too much, lift the non-inverting grid's stopper from ground and connect it to a tap on the 1 Mohm resistance across the O/P jack. That portion of the resistance between the "hot" O/P and tap should be non-inductive. Meter matched carbon comp. parts (for good channel to channel balance) is the cost effective method, but (naturally) Mills NIWW or Caddock film are the "super/duper" way.

Eli D.



Edits: 03/27/17

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  • RE: 6SN7 circuit - Eli Duttman 01:36:07 03/27/17 (0)

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