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In Reply to: RE: The small circuit board posted by Cousin Billy on April 15, 2016 at 04:18:51
It still has four front-end 6SN7s, and AFAIK, they're configured the same way as they were in the Mk.IIs.
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Tin-eared audiofool, large-scale-Classical music lover, and damned-amateur fotografer.
William Bruce Cameron: "...not everything that can be counted counts, and not everything that counts can be counted."
Follow Ups:
I've been trying to think?
If the CCS is now solid state, what would Ralph use that spare tube for?
I looked closely at your 'inards' picture.
If you look closely, the signal wire from the XLR connection goes to a tag strip.
From there the signal goes through two input resistors. These are attached to V2.
There are two wires which connect those two input points to V4, also input points.
If someone else could look at the picture, that would be much appreciated.
If someone else could look
The MA2s that I repaired years ago had paralleled tubes for the bottom part of the cascode diff. So it looks like the two side tubes are the lower part of the cascode, the middle tube is the upper part of the cascode, and the front tube is the cathode follower/driver tube.
Craig
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