I think your calculations are in error. Please show your math. This is a test..... (don't forget centerline moment) I’ll verify your math with Autocad.
just kiddin...
Ken, if it were me, I'd pick up some 3/4" X 2" X whatever length you need oak boards. Drill holes through the boards that you can run some screws through. Mount them to the speaker and place the rubber feet under the ends of the boards. Move the feet in / out from center and experiment with tipping force. After you get the lengths figured out, remove the boards, cut to length and put whatever edge profile on them you like (whatever router bit you might have). Then stain / finish however you want.
