acoustic vertical window blinds

@folkfreak What do the Marigo VTS window dots do? Do they absorb the sound vibration on the glass?

My listening room has windows behind the speakers and also along one long wall. After trying absorbers and diffusers, I finally got a great sounding room using the Synergistic Research HFT products. They are easily removable and so can be removed and taken to the next house when the time comes. Also they are not visually distracting.

David Pritchard

Re Marigo VTS Dots: Marigo Dots come in various sizes depending on application - from capacitors to circuit boards to electron tubes to speaker cabinets to walls to windows. The dots operate via constrained layer damping. To whit,

”Beginning in the early 1930s a variety of theoretical and experimental research has been published regarding the development and use of damping. What began as an experiment to reduce noise and vibration in metals and plastics has become a common treatment in an amalgam of applications. Constrained-layer damping (CLD) is a specific method of treatment commonly used in the aerospace and military industries. CLD may be described as a type of shear-related energy dissipation achieved by interconnecting two or more structural materials using a relatively thin viscoelastic layer. Among the advantages of using CLD as a damping treatment are the ability to obtain high loss factors with relatively thin configurations and that the stiffness of the composite system is not markedly increased.”

Adding to Geoff’s description the window dots, which are actually quite large being about 2” across and 1/4” thick, when correctly placed help damp resonances in the panels of windows.

I also have HFTs (and SR ART resonators) on my window as well. Each of these tools serves a different purpose
1. The marigo dots damp the glass and make it more like a wall
2. The sound planks treat reflections from the glass/wall
3. The HFTs then focus the sound at the reflection points and make the glass/wall disappear

The good thing is all three are readily removable

ps my window is also an acoustically designed dual double pane setup without any parallel surfaces ...

OK. Thanks guys. This is very useful information. I won't try them in our current house as there is simply too much glass to treat. But our new house which is in the building stage, I can plan to incorporate similar tech for it. Cheers. A.