@Bryant Dunivan 111417 posted:
I have the exact same set. It works for me. It works well and avoids double speak from your powered and Superbass making announcements etc. I do’t think you can do that by giving all the same ID.
Depending on the vintage, the newer multiple unit sets have a switch to turn off "crew talk" so they can all be assigned the same IDs and not have "double speak".