Hi gavp,
I just found I was short an S5 cable myself.
Searched this forum and found:
https://www.meridianunplugged.com/u...bb=showflat&Number=93240&fpart=1so I decided to risk it with an old (I mean 1970s) analogue tape recorder 5-pin DIN-to-DIN lead.
It worked!
I use the M5 lead for the SPDIF signal and run the DIN-to-DIN lead for comms alongside.
Or friends at
www.maplins.co.uk will sell you a 5 metre DIN-to-DIN for �12.99 here:
http://www.maplin.co.uk/Module.aspx?ModuleNo=1096but I have not tried this one.
Usual caveats apply. Try this at your own risk. The manual is very clear about not conecting audio DIN leads to the speaker but I suspect that means don't connect an audio signal DIN lead.