llemtt wrote:it's a negative feedback loop, so does whatever negative feedback does: reduces distortion, improves freq response, lowers output impedance,...
the right question is: why is there? 8)
teo
From my experience, the feedback loop, in conjunction with the 220k/500p grid network, scoops out some of that sharp string bite. It is subtle, but effective if you're string breaker like me. Anything less than 44m resistance is too much feedback though. YMMV.
-Bob
mlp-mx6 wrote:Your description sounds exactly correct. It is a subtle effect.
22M offers more feedback than 44M, so I would expect more effect at that setting.
Closeness to the socket will not make a difference, except maybe for noise - but you did not mention noise. Sounds like things are just as they should be.
mmm... interesting.
So it´s like in the global Negative Feedback Loop. A higher value in the imput resistor means less signal going into the circuit...
I,m gonna chek a 10M-22M combination.....
And just one more question....
What about the .047uf cap? Why not a .022uf? or a .1uf?
The grid stopper is part of the feedback loop, it's the ratio between the feedback resistor (44M) and the grid stopper (220K) that sets the amount of feedback. That's how feedback around an inverting stage works.
