Hi
I have a pair of armstrong A10 amp, and I am pairing it with a modern pre amp that it does not have volume control for the left and right channel.
One of the power amp is giving considerable louder sound compared to the other one.
Can anyone offer any suggestion to lowering the gain or lowering the output from the amp play loud such I can get a better balance when playing?
I note the circuit of the amp has a grid resistor or 27k ohm connected to the grid from input together with a grid leak resistor of 1 M ohm value. I suppose I can make a minor mod to these resistors to lower the gain, any suggestion on the values I should try?
If I change the above resistors, would the quality of sound degrade?
Thanks for help
I have a pair of armstrong A10 amp, and I am pairing it with a modern pre amp that it does not have volume control for the left and right channel.
One of the power amp is giving considerable louder sound compared to the other one.
Can anyone offer any suggestion to lowering the gain or lowering the output from the amp play loud such I can get a better balance when playing?
I note the circuit of the amp has a grid resistor or 27k ohm connected to the grid from input together with a grid leak resistor of 1 M ohm value. I suppose I can make a minor mod to these resistors to lower the gain, any suggestion on the values I should try?
If I change the above resistors, would the quality of sound degrade?
Thanks for help