[Gogar]

Wayne,

What SONOS components are you using? I was looking at it a little, and are you using those ZONE PLAYER 80s or 100s or what? Might help us help you if we know what you're working with.

From reading your initial post I'm kind of guessing you have the 'powered' zone player 100.

How many speakers are in each room?

It's possible that (especially if there's more than TWO in each room) that the speakers are of a high (likely 16ohms) impedance, which might make them seem not quite loud enough if wired incorrectly. If there's 4 or 6 or (whatever) speakers in each 'zone' and you're using that zone player 100 maybe you're just not hitting the speakers correctly . You could wire 2 16ohm speakers in parallel and get 8 ohms, which the zone player is rated for. You could probably parallel 3 16 ohm speakers and you'd get (uhh . . . .. somewhere more than four but less than 8ohms.) Which it would -probably- be fine with as well.