Hey guys,
OK, so I'm trying to finish off this mic pre with a White CF, but something isn't clear to me here... The WCF will be getting signals with peaks of up to about 10V (18dBm or so), so I'm thinking I should bias the grid of the upper toob to around -11 or -12 Volts, right? But then I start looking at other WCF's online and in books and things, and they ALL have these wimpy grid biases in the -1 to -3 Volt range.
I want to use a 6N1P tube for my WCF, so anything lower than -4V is pretty much out of the question... So my question is: How the hell do you settle on the grid bias of a WCF? Do you just set whatever grid bias you want and let the intrinsic feedback in the WCF deal with too-high input signal levels?
Thanks!
Peace,
Al.
OK, so I'm trying to finish off this mic pre with a White CF, but something isn't clear to me here... The WCF will be getting signals with peaks of up to about 10V (18dBm or so), so I'm thinking I should bias the grid of the upper toob to around -11 or -12 Volts, right? But then I start looking at other WCF's online and in books and things, and they ALL have these wimpy grid biases in the -1 to -3 Volt range.
I want to use a 6N1P tube for my WCF, so anything lower than -4V is pretty much out of the question... So my question is: How the hell do you settle on the grid bias of a WCF? Do you just set whatever grid bias you want and let the intrinsic feedback in the WCF deal with too-high input signal levels?
Thanks!
Peace,
Al.