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The most common practice of routing AC heater wires I've seen and read about involves keeping them close to the chassis, but in a fairly simple power amp I'm rebuilding, it seems to me I can keep the AC filament wires more isolated from the signal wiring by running the heater supply wires as twisted pairs above the tube sockets--looking from underneath--and keeping the signal wiring & components closer to the chassis (steel in this case).
Is there any inherent benefit in routing the filament supply wires close to the steel chassis that would make doing so preferable?
Please don't suggest DC heaters--they would be massive overkill in this amp ;-)
David
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