Preamp tubes 12V heater

überfuzz

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Join Date: Dec 2009

Posts: 1191
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#1

Preamp tubes 12V heater

04-24-2019, 09:36 AM

Hi

Has anyone any experience with 12Vdc heater voltage on tubes such as ECC83? I have a neat little power supply which feed 12Vdc, 3.0A...

I figure it should be possible to run the two heaters of the preamp tubes in series.

In this forum everyone is entitled to my opinion.
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Gregg

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Join Date: May 2006

Posts: 657
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#2

04-24-2019, 07:45 PM

Always did 12VDC regulated heater supplies in high gain amps. First two tubes are enough but sometimes I feed all preamp tnbes from the regulated supply. To avoid CF failure you can elevate them as well. Because I get my PTs from local businesses I always order a separate 15VAC/1A secondary just in case.
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