AceCannon,
That is a unique way of mounting a motion with the SP12F speaker.
With 8 of the SP12F speakers, do you have a good sound saturation throughout your house?
Yes we can hear voice messages throughout the house very well. This is with volume set to 3 (max is 7). I've been quite pleased with these little speakers.
Heh the alarm volume is set max and it is NOT subtle.
You probably did a better job then most professionals would.