First of all “fire” the sales person as they oversold you assuming they fully understood you only wanted Sonos for a home theater (HT) setup. The only components required in your case (as of now) are:
- Ray
- Era 100 x 2 as surrounds
You can return the other two Era 100’s and purchase a Sub-Mini to complete your setup for added low-end for movies and music. The Sub Mini will only cost $29.00 more (USD) after return credit for the two Era 100’s. Your new HT will consist of:
Sonos can only use two (2) speakers as surrounds in a HT setup. Also, you can set the Era 100’s to play in full stereo (along with the Ray) for music and auto-switch back to surround mode for movies.
When properly setup the TV remote will control the volume for all speakers simultaneously that are part of the HT. Assuming you have two (2) Era 100’s bonded to the Ray as shown in this link and the remote is properly setup the volume will be adjusted for all speakers. Follow this link to add a sub to your HT.
FYI, the Era 100’s must not be configured as a stereo pair when adding them as surrounds.
EDIT: @Schlumpf types faster than me 😀
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