Express V1 Pin2 820 Ohm

[DaveWell]

Express V1 Pin2 820 Ohm to 1K

Is it good or not to put a resistor ion that position ?

Some KF Express have other not.

Thanks for the Info and Help

[martin manning]

Combined with the Miller capacitance of the tube it will attenuate RF signals that arrive at the input, with -3dB point at 1-1.5 MHz. Such signals may contribute to noise, and adding the resistor is not likely to limit audio frequencies an any perceptible way.

[DaveWell]

so if RF may be a problem, adding it :Might: Help ?

I mean after the built complete.. or before completing the amp ?

I want to take precaution...

[martin manning]

No doubt it will attenuate MHz frequencies, but you may or may not notice it. Being located right at the tube socket, it's very easy to add to the circuit, before or after the initial build.

[DaveWell]

Great Thanks !

I'm gonna add it.

[Littlewyan]

Try it. In my Express it increased the noise but it might help in your's.

[DaveWell]

using a metal film Dale resistor might help too

[DaveWell]

Bord , Pot wire... Match color !

Thanks