Hi Neil,

It's a bit odd re your DSP5000 not switching the RED light off, and even odder that you can't set your DSP5000C to be a slave; any Meridian DSP can be Master or Slave.

I know you have said your are following the procedure to setup the DSP's but would you hummor me and describe step by step when typing and then configuring (Power switch, MSR/MSR+ buttons) when you attempt to set up:

1) Your DSP5000 as non-Master
2) Your DSP5000C as Master

Also what firmware versions are these speakers running.

Regards,
Carl

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