Minion
Well-known member
Hi, The Tubes have an output impedance of 470K and I am useing 2 tubes in series which should bring the Output impedance close to 1M.....
Even if the Output of one Tube doesn"t effect the output impedance of the other the Impedance is still at least 470K??.....
here is a Diagram of one of the Tubes curcuit:
The 100K resistor at pin 1 of the Tube can be replaced with a 100K Pot, the Less resistance the More Current and the More Gain, it runs at unity gain at 100K.....
I have it set up so the First tube is run at unity gain to add the Tube color to the sound and the Other Tube has the 100K pot on it which allows you to overdrive the second tube.....
ThanXX!!!
Even if the Output of one Tube doesn"t effect the output impedance of the other the Impedance is still at least 470K??.....
here is a Diagram of one of the Tubes curcuit:
The 100K resistor at pin 1 of the Tube can be replaced with a 100K Pot, the Less resistance the More Current and the More Gain, it runs at unity gain at 100K.....
I have it set up so the First tube is run at unity gain to add the Tube color to the sound and the Other Tube has the 100K pot on it which allows you to overdrive the second tube.....
ThanXX!!!