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Page 58
300B Valve Base
Pin 1
Red wire to Filament board W1
Pin 2
Red wire Primary of O/P Transformer
Pin 3
3K3 resistor white to white wire back to Interstage transformer
Pin 4
Black wire to Filament board W3
1K5 parallel resistors (whose other ends go to GND)
220uf 100v capacitor (whose other end goes to GND)
6SH7 8-pin Valve Base
Pin 1
Not connected
Pin 2 Black Filament Wire to Filament Board W4
Pin 3 330R resistor (whose other end goes to GND)
470uf capacitor (whose other end goes to GND)
Pin 4 1K resistor to RCA input
Pin 5
Not connected
Pin 6 100R resistor (whose other end connects to Pin 8 – 6SH7)
Pin 7 White Filament wire connected to Filament Board W2
Pin 8 100R resistor (whose other end connects to Pin 6 – 6SH7)
Red wire to Interstage transformer
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