Bryan is right they are not good for HT. When I shopped for track lighting I had a sales representative allow me to climb the latter and physically shake each of the lighting to test them for rattles. The ones that gave me least rattles were the style I choose. The ceiling joist are all decoupled from the walls and they are secured further by furring strips that are wedged from the joist into ridges that are on the steel ceiling. That helps prevent the entire joist from physically bowing around with sine waves and aids in the perfomance of my ceiling tiles but does that help the plastic track lighting? Nope. I have placed a small amount of cardboard under them, but the fact that there is loose tile between the wood and the parts attached to the track lighting gives them no support in those areas. What I found shaking was the parts that contain the bulbs, but this is something I notice sitting in the rear of the room, not the front of the room. I need to be sitting under them because otherwise I have not heard it up until now. My sconces are caulked to the walls except in the front where there is carpet behind them. I tried all forms of lighting before I got the track lighting. Lamps, flourecent lighting, night lights. Some battery powered LED lighting would be best but it isn't going to fully light my room, and it isn't cheap. That's way low down at near 20Hz that shook the track lighting. It isn't sound I'm able to hear well. It is mostly felt.I admire your determination (and energy level!) in getting your room treatments right. You have me thinking about treating my ceiling after all.
In a previous post you mentioned track lighting. What brand/style did you use and do they rattle? I have recessed cans in the ceiling that supplied enough light until I blacked out the ceiling. Some track lights around the room perimiter would help.
I got mine at Lowes. Here is a photo of it.
I have an example here with what happens when I remove treatments from the room. Removing the extra absorption behind the speaker in the cabinet made the right speaker worse, so I am going to try and see what I can do to improve the results more. As I removed all the treatments, then began to add them, the room began to sound larger and bass became more easy to hear. It also sounded like I was adding larger speakers.
Room treatments where they are.
Removed 2" panels from the front of the stage.
Removed a pair of 2" ATS panels and 6 GIK 244's from first reflection points.
Removed the pair of GIK Pillar Traps. Ouch!
Removed the pair of GIK Moster Traps.
Removed the 6 panels of OC 705 from the front wall.