Good point, not good if ya have to bore out the hole on upgrades from Qs4's.
just so we understand i'm talking about the bottom hole on the bracket shown in the picture (they are using the center hole on the bracket) JC & I are referring to the bottom hole as the screw that comes with the bracket to attach it to the speaker only fits through the center hole. it's not about model of speaker QS4 or 8, it's about the bracket itself. here is a picture of my basement QS4v3's mounted with the bracket using the bottom hole that was drilled out.
notice it's not mounted using the center (default) mounting hole. i drilled out the bottom hole to make it just a tiny bit larger to accomidate the mounting bolt; it took about 3 minutes for each speaker. remove the speaker cables, remove the speaker from the mount, drill the lower hole, remount the speaker and connect the cables. it goes even quicker if you have someone there that you can hand the speaker and the bolt to and can swap between the speaker/bolt & the drill working with you!
