I want to reduce input drive to my amplifier by about 3 db,
I have a Plug-in type of Harrison Rca Shotgun type and read the resistance on it 820 Ohm?
I have a Plug-in type of Harrison Rca Shotgun type and read the resistance on it 820 Ohm?
You will need to know the input impedance of the amplifier. The source impedance is not going to matter in this case. Go to Pi Attenuator Calculator - Electrical Engineering & Electronics Tools and enter the required attenuation and the input impedance.
For example, 3 dB and 47K yields shunt resistors of 275K and a series resistor of 16.6K.
For example, 3 dB and 47K yields shunt resistors of 275K and a series resistor of 16.6K.