The signal will not be combined to mono. The toslink input would accept 5.1 if you feed it with such signal. You'll need an optical splitter on the output and send the splitted LR signal to the speakers. In the web interface you'll choose which speaker is left/right.
Living room: Sigberg Audio Manta/10D subs, MiniDSP SHD.
Den: Tannoy Precision 8 iDP/TS112 iDP sub, MiniDSP SHD Studio.
In the cupboard: Some bits and pieces of a Phantom Silver 1. gen.
My Phantom Voyage
Den: Tannoy Precision 8 iDP/TS112 iDP sub, MiniDSP SHD Studio.
In the cupboard: Some bits and pieces of a Phantom Silver 1. gen.
My Phantom Voyage