Windows in a listening room

not exactly sure what you mean. What I meant was the walls and glass windows act like drum heads so they should be somehow quieted.

I was wondering if playing at lower / reasonable volumes lessens the need for "quieting" those drum heads? As a solution?

Define reasonable volume.

90dB peaks. 70-75 dB average. (for my needs) This would be at the higher end of day to day volume for me. For example, I’m currently listening to Indian Classical at an average of low 60 dBs with peaks in the mid 70s. These are measured at the listening position.

Sound pressure peaks in the room are much higher than average sound pressure levels in the room. And the vibration nodes of a wall or glass window probably require “node dampers” for best results. That’s where the Marigo VTS Dots are suggested to be placed. Or any damper. I suspect the only way to find out is experiment.

Thanks, Geoff.