Audio Note Kits Forum

Posted by AudioNoteKits (M) on April 08, 2007 at 19:35:26

In Reply to: Re: AN K1, is too much if you can switch it? posted by GTCharlie on April 6, 2007 at 21:02:02:

Just to clarify the new Mains transformer that we use on the Kit1 is designed to support either a 300B or 2A3 triode . To make the switch requires changing the two wires going to the 5U4G from the 425 taps to the 325 taps - also we make a resistor change in the filament board so that the adjustable voltage regulator outputs 2.5V for 2A3 or 5V for 300B and the last change is the cathode resistors on the triode - we use 1K5 for the 2A3 and 1K8 for the 300B - So with about 10 minutes of soldering you can go between 2A3 and 300B!
Brian Smith

• Re: AN K1, is too much if you can switch it? - beto1 18:44:35 04/09/07 (2)
  • Re: AN K1, is too much if you can switch it? - AudioNoteKits 18:50:19 04/09/07 (1)
    • Re: AN K1, is too much if you can switch it? - willleung 08:38:29 03/13/08 (0)

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