Congratulations on getting there!

Leave phase at all +ve (default)

'Gain' you can adjust when you buy an SPL meter. Leave it for now.

Connections...you have these sorted anyway for the DSPs, they are labelled on the rear of the processor

Connections for sources will be at defaults as detailed in the manual. At some future point, you can go back into the legacy software programme and change them if necessary.

Don't know how Meridian subs should be set up re Xovers, as I've never used one.

Goodness, you may even be listening to music before the night's out!


Cheers

George