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London Power 3 channels amplifier project
#22
Hi Vostre

There are three options for having individual fixed / cathode bias switching control for each tube

1 - Use a separate DPDT for each.

2 - Install the relay type listed in the PA66 notes, then use a simple SPST or SPDT per tube. The relays mounbt on the board directly.

3 - Buy PA66-S2 which provides two relays and two switches, as required for each PX66 card (the power tube portion of the PA66).

Have fun
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RE: London Power 3 channels amplifier project - by K O'Connor - 01-21-2019, 01:05 AM

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