29-10-2012, 11:06 AM
Forgot to add: I suppose it depends how the replacement speaker was configured originally, if designed for higher current then maybe a seperate rectified DC feed might be needed.
As you say, try it with a series resistor of 2.2 or 2.5k of a suitable rating and see what the results are, if lowering the value is required then the valve rectifiers operating parameters might have to be taken into consideration.
Lawrence
As you say, try it with a series resistor of 2.2 or 2.5k of a suitable rating and see what the results are, if lowering the value is required then the valve rectifiers operating parameters might have to be taken into consideration.
Lawrence







