After realising that one of my old PCs has a digital audio header on the Mother board, hunting through a box of bits to find the digital I/O back plate with a coax connector on it to set up a digital source. Then connecting each speaker, one at a time, checking L/R, then connecting both in to each other all seemed to work. Connecting again with the OE S5/digital audio cable, still worked.

Finally brining the 561 into play all works. Looks like the DSP's just needed a rest overnight and are now pretending that nothing ever happened.

JOY ?

When you die the one with the most toys wins