Hi all,
I have this Amek Channel in a Box.
It has a trafo-coupled line input that can be reconfigured as a virtual earth mixer, by simply bypassing the 5.1K resistors between the XLR and transfo in (see attach).
Two questions:
1) What is the advantage of having a trafo in front of the virtual earth summer, other than galvanic separation? The trafo secondaries are in the feedback loop of the 2134's, what's the benefit?
2) If I were to use the virtual earth summer as a 4-input line mixer, does each of the 4 inputs need to have 20k4 resistors to end up with a total parallel of 5.1K for optimum source impedance ?
Thanks in advance!
Rogy
I have this Amek Channel in a Box.
It has a trafo-coupled line input that can be reconfigured as a virtual earth mixer, by simply bypassing the 5.1K resistors between the XLR and transfo in (see attach).
Two questions:
1) What is the advantage of having a trafo in front of the virtual earth summer, other than galvanic separation? The trafo secondaries are in the feedback loop of the 2134's, what's the benefit?
2) If I were to use the virtual earth summer as a 4-input line mixer, does each of the 4 inputs need to have 20k4 resistors to end up with a total parallel of 5.1K for optimum source impedance ?
Thanks in advance!
Rogy