I am in the process of rebuilding a pair of Dynaco MKIV's, and will be using the 12AT7 configuration from VTA. The parts list, and the VTA website, which shows the, Auricap upgrade, show the caps being used as .33uf. The schematic, and the actual board layout show a .22uf cap. Also there is a difference with the R15 resistor. Two show a 7.5K, and two show a 6.8K resistor. I realize these are not huge differences, but what should I believe. Thanks!
Confusion with the Dynaco MKIV boards from VTA
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JunkyJan- Posts : 108
Join date : 2008-12-09
Location : BC, Canada
Hi Michael
I have built the VTA boards for the Mark III (which is pretty similar IIRC) about 6 weeks or so ago. Think of the .33 caps as a "better" .22 cap - it makes absolutely no difference.
The different resistor values are probably a hi-gain version of the board.
-- JunkyJan
I have built the VTA boards for the Mark III (which is pretty similar IIRC) about 6 weeks or so ago. Think of the .33 caps as a "better" .22 cap - it makes absolutely no difference.
The different resistor values are probably a hi-gain version of the board.
-- JunkyJan