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23rd March 2010, 05:21 PM
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#1 |
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diyAudio Member
Join Date: Feb 2002
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Welborne Labs Dynaco MkIII driver board kit
This is a complete and mostly assembled MkIII upgrade kit from Welborne. It includes regulated PS boards for each amp, and a mu-follower driver board upgrade. It also includes all sockets etc to make what is basically a complete overhaul kit for the Dynacos - all that remains from the original is the chassis and iron. This also makes it somewhat easy to use this as the basis for a standalone amp as well. Includes the signal tubes (a 6U8 and 12ax7 per channel) and solid-state rectifiers that plug into the tube sockets (I believe the regulators have a soft-startup routine built in to avoid the usual problems with SS rectifiers putting too much voltage on the tubes before they're warm) Includes the original documentation which includes instructions and schematics for both the regulators and the drivers.
$150 plus actual shipping. |
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24th March 2010, 01:49 AM
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#2 |
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diyAudio Member
Join Date: Oct 2005
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ygm!
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