The design is based on 12 X 8 X 2 Hammond aluminum chassis.
The black and grey twisted pairs represent a shielded cable.
I am using a separate preamp bus and power-amp bus.
I am trying to keep the input away from the power transformer.
I am trying to keep the tubes close to where they are needed.
The main modifications from the original schematic are:
Mod-1. Added a 470Ω screen resistor to V2 (see forum discussion), in my schematic this is R15.
Mod-2. Added some SPDT switches to pick 3 of the 4 output transformer impedances.
Mod-3. Based on Uncle Doug's videos, some helpful forum members, and Merlin's book , the 68KΩ grid stopper on V1 should be smaller. Fender amps would have the equivalent of 34KΩ and Merlin suggests that 10KΩ + 680pF capacitor will be quieter. I have not updated the layout yet but I am considering it.
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| P2P Layout |
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