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Wiring diagram needed
Posted: Tue Dec 19, 2023 6:08 pm
by Robocop101985
Anyone have the wiring diagram for the Metro Dagnall clone OT C1998? Build journal I’m referencing only uses the connections by color… not the value of the wire. The link is dead that’s in this thread. Any help would be appreciated. Thanks.
Re: Wiring diagram needed
Posted: Thu Jan 04, 2024 11:03 am
by Tazin
Primary Leads:
Brown: is for Valve #6 & #7 (Pin #3 on the octal sockets).
White: Center-tap.
Red: is for V4 & V5 (Pin #3 on the octal sockets.
Secondary Leads (self-lead; cloth covered):
Green: 16-ohm.
Yellow: 8-ohm.
Black: 4-ohm.
Brown: Common (negative; speaker jack).
Note: To ensure proper phasing of the output transformer, the 82K Phase Inverter plate resistor (pin #1 on pre-amp valve #3) feeds V4 & V5. The 100K Phase Inverter plate resistor (pin #6 on pre-amp valve #3) feeds V6 & V7.
Re: Wiring diagram needed
Posted: Wed Feb 21, 2024 9:30 pm
by jack1999
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