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VK Music - Elekit & Triode Japan Forum Welcome! Need support, you got it. Or share your ideas and experiences. |
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VK Music - Elekit & Triode Japan Forum Welcome! Need support, you got it. Or share your ideas and experiences. |
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In Reply to: RE: Questions about the TU-875 posted by vkung on July 30, 2008 at 22:39:40:
Victor: Thanks for your prompt and forthright reply.The preamp that was originally designed to complement the ST-70 was the Dynaco Pas 2 /3 series. Two R's in the Pas are in parallel with the input impedance of the ST-70 ... thus ... R1 (62K) + R2 (510K) + R3 (470K) in // equals a load of (nominally) 50K Ohms.
Perhaps the best way to procede goes like this: build the TU preamp. Then meter the output impedance. In accordance with whatever the result may be, the assembler can do adjustments by adding in R's — either in series or in parallel so as to bring the TU close to presenting a load that is a tenth of the input impedance of whatever amp is being used. AFAIK, a 10:1 ratio is the usual target. Cheers ... Lorne
Sonic Lizard
Edits: 07/31/08 01/01/01 01/01/01 01/01/01 01/02/01 01/02/01 01/10/01 01/10/01 01/10/01 01/22/01
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Follow Ups
- RE: Questions about the TU-875 - strieb 08:12:47 07/31/08 (0)
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