On January 6, 2018 at 07:44, Craig Aguiar-Winter said...
Is the client committed to Sonos elsewhere in the home as well?
If not since you are putting in a new source anyway, consider a HEOS link. It has sub out, crossovers, and a trigger output.
Otherwise RDL makes a selection of crossover modules you can use.
Craig
I don’t think you are correct on the crossover. The Superlink and the HEOS Drive have crossover options.