Thank you Streamy.
Yes it works well to allocate the rear Phantom to a separate room and then switch from 2 to 3 speakers whenever wanted!
I also found out something interesting: Spark for iOS doesn't let you control the volume independently between front and rear (ie 2 separate rooms here, merged onto single stream of music), but Spark for Mac has the option to independently adjust the level of 2 rooms even when merged onto the same stream of music.
Note that the Remote changes the volume globally and resets to zero any difference between these 2 rooms.
Yes it works well to allocate the rear Phantom to a separate room and then switch from 2 to 3 speakers whenever wanted!
I also found out something interesting: Spark for iOS doesn't let you control the volume independently between front and rear (ie 2 separate rooms here, merged onto single stream of music), but Spark for Mac has the option to independently adjust the level of 2 rooms even when merged onto the same stream of music.
Note that the Remote changes the volume globally and resets to zero any difference between these 2 rooms.
