Something I found while reading the net:
[IMGHTTPDEAD]http://pic.hifidiy.net/forumid_10/100122085042a750a88c3ffb99.jpg[/IMGHTTPDEAD]
In the top half the left most tube (12AU7), the grid is connected to a 1k resistor then a 1M resistor connects it to ground - what is the purpose of this 1M resistor? Something like the resistor found in the same position in a SS/chip amp but at lower value? Why 1M then? (Sorry I am new to tubes)
Then, in different versions of the same amp there is no potentiometer at the input, would the 100k potentiometer result in any trouble in this case? Particularly when the volume is set to lowest?
[IMGHTTPDEAD]http://pic.hifidiy.net/forumid_10/100122085042a750a88c3ffb99.jpg[/IMGHTTPDEAD]
In the top half the left most tube (12AU7), the grid is connected to a 1k resistor then a 1M resistor connects it to ground - what is the purpose of this 1M resistor? Something like the resistor found in the same position in a SS/chip amp but at lower value? Why 1M then? (Sorry I am new to tubes)
Then, in different versions of the same amp there is no potentiometer at the input, would the 100k potentiometer result in any trouble in this case? Particularly when the volume is set to lowest?