First off I want to say hello and introduce myself as this is my first post on the forum. Though I am fairly new to this I hope to be able to contribute to the community as much as I can.
Anyway, I have been reading up as much as I can, particularly on the subject of guitar tube amplifiers, but I must be missing something fundamental. I can't seem to come up with a reason why there is usually a high value resitor between the input and ground on most things that have an input.
A particular example can be seen in the schematic of the P1 guitar amp project: http://annex.ax84.com/media/ax84_m311.pdf
Having built this amp, I'm trying to now go back and understand what's going on. I read the theory document provided on the site (http://195.178.239.50/ax84/media/ax84_m35.pdf) and understand pretty much all of it except that darn resistor (well and the tone stack to some extent). I'm assuming the answer is pretty simple and therefore I must not understand something fundamental so any wisdom on the subject would be greatly appreciated.
Thanks in advance
Anyway, I have been reading up as much as I can, particularly on the subject of guitar tube amplifiers, but I must be missing something fundamental. I can't seem to come up with a reason why there is usually a high value resitor between the input and ground on most things that have an input.
A particular example can be seen in the schematic of the P1 guitar amp project: http://annex.ax84.com/media/ax84_m311.pdf
Having built this amp, I'm trying to now go back and understand what's going on. I read the theory document provided on the site (http://195.178.239.50/ax84/media/ax84_m35.pdf) and understand pretty much all of it except that darn resistor (well and the tone stack to some extent). I'm assuming the answer is pretty simple and therefore I must not understand something fundamental so any wisdom on the subject would be greatly appreciated.
Thanks in advance