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Old 13th May 2013, 09:16 PM   #1
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Default b1 buffer preamp suitable voltage

Hello everybody,
I was reading that the suitable voltage for the B1 buffer preamp from Nelson Pass is between 18V and 24V.
I'm wondering if I'll have catastrophic results if I power it with only +15V ...?

Thank for answers
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Old 13th May 2013, 10:16 PM   #2
Zen Mod is offline Zen Mod  Serbia
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not catastrophic , but thd will rise
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Old 14th May 2013, 11:35 AM   #3
AndrewT is offline AndrewT  Scotland
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A 2.2Vac signal will be ~7dB below maximum output. That's still an adequate headroom to help avoid excess distortion.
Normal signals through the B1 will more likely be <<1Vac
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Old 16th May 2013, 07:32 PM   #4
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Wink No catastrophe here, except for the dining room

I have run mine with a single nine volt battery as an experiment, no catastrophe. I do run it at 18 volts, though, because that's what papa said to do. Here is a picture of the build, notice the empty Guiness and dinner in the crockpot. (This construction method is not recommended if your spouse is home).
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