Hello,
I want to make a mono summing RCA cable to connect my audio interface/DAC to a mono amplifier. The input impedance of the amp is 30kΩ, the input sensitivity (2Ω, 100W, 1KHz) is 0.83V. The source max output level is +16dBu and i do not know its output impedance.
What value resistors should I use? Do I need a resistor on the summed output that goes to ground? What is the purpose of this resistor (can be seen in the schematic below)?
The amp is a wondom model WONDOM | STORE
The audio interface a Motu M4.
I want to make a mono summing RCA cable to connect my audio interface/DAC to a mono amplifier. The input impedance of the amp is 30kΩ, the input sensitivity (2Ω, 100W, 1KHz) is 0.83V. The source max output level is +16dBu and i do not know its output impedance.
What value resistors should I use? Do I need a resistor on the summed output that goes to ground? What is the purpose of this resistor (can be seen in the schematic below)?
![E3Aob.jpg](https://i.stack.imgur.com/E3Aob.jpg)
The amp is a wondom model WONDOM | STORE
The audio interface a Motu M4.