For ~$30:
Reverse some (just longer than speaker to ceiling measure) bar clamps to spread mode. Attach some wood pads to spread out the pressure to the ceiling. Apply fo.Q tape to the pads. It is then easy to apply hundreds pounds of pressure to the speaker assemblies.. AND to remove them if you want soup tonight.
If you have high ceilings live without.
Reverse some (just longer than speaker to ceiling measure) bar clamps to spread mode. Attach some wood pads to spread out the pressure to the ceiling. Apply fo.Q tape to the pads. It is then easy to apply hundreds pounds of pressure to the speaker assemblies.. AND to remove them if you want soup tonight.
If you have high ceilings live without.