....you just made me think about potential vibration from my ceiling-mounted IB. I am close to mounting my pj in that room. With it dropping down about 20", I now fear even a small vibration on the ceiling will translate to visible shake on the screen. Part of my reason for installing the pj was to have a big pic to match the big sound.
Anyone here have a pj ceiling mount sharing the ceiling with their IB manifold? Any problems? My manifold is NOT mounted to the same joists as my pj mount, so maybe I will be ok.
You could always switch to a shelf mount, and then shock-mount the shelf with bungee cord... it works for microphones in high-vibration mounting situations (Like the bottom side of a marimba). And there are ways to not make that look as silly as you might be imagining.
Quick update....i haven't done anything yet to fix the problem. But, I have been thinking about doing the shelf option. Currently it's on a makeshift shelf and it's not too bad. I just don't want to order a mount, install, then find out it shakes.
Lately I have been working on the theatre room so I need to start a new thread soon so you guys will know where I'm at. Hopefully this weekend I'll get to it.