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13th June 2005, 07:15 AM
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#1 |
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diyAudio Member
Join Date: Apr 2004
Location: Silicon Valley
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Matched transistors in Threshold SA/_e amplifiers?
This question is for Nelson:
I have a few of the Threshold SA/_e amplifiers (SA/12e and SA/4e), and was wondering if the TO-3 output devices has been matched in any way when these amplifiers were produced? If yes, could you tell me what the matching process and criteria were? I see no markings on the output devices, so that made me curious. Thanks, Michael |
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13th June 2005, 09:07 PM
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#2 |
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The one and only
Join Date: Mar 2001
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They were tested for gain (there was a minimum acceptable
current gain) but not otherwise matched. Matching was not required for performance, but gain was. |
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