Passive mixer : Mono input and stereo width question

[Niketouille]

Hi,
Does adding a mono input in passive mixer design could alter the stereo width of the stereo inputs ?
I was thinking about that because a mono input create a path between the two bus.
Cheers
NKT

 

[JohnRoberts]

If the inputs are driven from very low impedances, there will be no crosstalk.

If the bus resistors are disconnected or back grounded when not assigned, there will be no crosstalk.

There is a reason consoles use input buffers and the like.

JR