Hi Chris, thanks for your reply.

Yes the DSP33C is set to L/C

The 568.2 is type 2.1 D_ _

I have a D1500 sub which I want to add once I’ve figured it all out!
Is it possible to use the sub to check if the centre/sub channel works?
I have only skimmed through the online manual and I’m not even sure how to link them yet.

I’ve read about the DSP33 reset but I am a bit worried about sticking metal pins into electronics!!!

Thanks again

568.2, 5200’s, 5200hc, D1500 sub