Has received some mods from a tele player, so dialled out a lot of top end:
V1a Cathode Bypass cap (in addition yo 0.68uf) was 10uf
Treble Peaker snipped out
PI entry cap 47nf (instead of 22nf)
PI cap 47nf (instead of 100nf)
Also for some reason the 4k7 PI tail resistor on the presence pot has been replaced with a MF in addition to the presence cap.
I have done the following mods:
V1a Cathode Bypass Cap - removed 10uf so we have stock 0.68uf
Added Treble Peaker cap. Only had a Mica, so will replace with a ceramic at some point
Replaced 1nf bright cap with 220pf styro
Parallelled 10k cold clipper with another 10k for 5k cathode resistor
My future plans are to dial out some bass in the preamp (replace 22nf couplers with 4n7), put PI caps back to stock and increase output couplers to either 47nf or 100nf. Possibly add a fixed depth 220k/2n2 circuit.
One interesting thing I have noticed is that the V2a plate resistor has been bypassed with a 220pf snubber. Now this looks factory stock, given it is the same RS type as the PI plate snubber.
I've never seen something like this stock from the factory. Has anyone else come across this? Is it possible that there was oscillation during the build process and they put the snubber in to address this?
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