Quoted from CGC-Ryan:

Just for clarity for those who tuned in late to the Flip N Out live stream last night. The topper and speaker kits are fully interactive with ALL Medieval Madness Remakes as will be the speakers. This is not exclusive to just Royal Edition games. We want all MMr Customers to have the full experience of what we can do now with our games.

Quoted from LTG:

Before securing the board in the head. Be sure cables reach. So you don't have to move it later.
The knocker - In commercial use I left it there and only drilled holes for three T Nuts and bolts, for the topper. I didn't move the knocker and mount it elsewhere and drill a T Nut hole in that spot.
I figured if three T Nuts and bolts weren't enough, one more wouldn't matter. As is with three, you'd still rip the top of the head off long before one more T Nut and bolt mattered.
LTG : )

Quoted from Nysbadmk8:

I buy the two pack of Voodoo glass from Tilt Graphics. Its the cheapest currently.