With the exception of the M6, all my speakers are legacy models, so I’m only looking for an analog-to-digital interface — I won’t need to use comms from either the SpeakerLink or the Distributor.
Legacy comms does make this (mostly) easier, but that would rule out the M6 rears without a bit of soldering..
I plan to daisy-chain the comms of all the legacy speakers and use the Distributor’s coaxial output. Do you think it will work that way?
That should work fine - the speakers won't know anything about the distributor and the distributor will be just doing A/D conversion.
I tried — without success — to make a cable to convert SpeakerLink comms to M5, but I was only able to control the master speaker when using the 218 as the controller. To make the 218 control both speakers, I had to set both of them as masters; this way it works fine, but I wasn’t happy with that solution.
If you're using legacy comms cables after the master speaker, the comms connection to the master speaker input should be ONLY RJ45 pin1 to DIN pin 5 and RJ45 pin2 to DIN pin 2 and shield - no connection to DIN pin 1 at all. The Wiki diagram is OK for a slave speaker, but the commoning of 1 and 5 on the DIN connector will push master comms to the slave speaker if it's a master connection.
Does the Distributor require any SpeakerLink connection in order to operate?
I don't think it's required. Looks like it just passes comms through between s/l in and S/l master out. It's unlikely to have any on/off function of its own.