I'm looking at setting up something like the Behringer RX1602 in front of my current mixer to add more stereo inputs to it. These stereo inputs are chiefly regular consumer audio devices such as an old cassette deck with an RCA output - all unbalanced stereo which it seems the mixer should deal with easily enough.
I then need to split the output of this mixer into two separate stereo outputs, one of which will be fed to a line in on a PC and the other to a further mixer (ultimately for listening with headphones; I already have this final mixer set up). I'm looking at something like the MX882 splitter/mixer for splitting, the mixer part giving slight additional flexibility if i need to change this configuration in the future.
The problem I have is that the splitter/mixer only has balanced XLR connectors, while all inputs and one output from it are going to be unbalanced signals over RCA or 1/4" TS connectors. Can I simply get (or solder) cables with the inverted and ground wires connected normally on the XLR side but both connected to ground on the unbalanced mono connector side? Will this work for outputs? If not, what kind of a device or setup would be advisable in between?