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To Couple or Decouple Bookshelf Speakers to Stands?

Just bought my first pair of bookshelf speakers (Focal Aria 906) and stands - have filled the stands with sand. Should I use sorbothane pads to decouple the Focals OR Bluetack them to the top base of the stands?  I've asked 3 friends and received 3 different answers.......
dadgad4
roberjerman
4,319 posts
 
No to decoupling! The added weight of the stands will give a firmer foundation for bass response. Just like adding mass to the speaker cabinets.
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oldhvymec
5,101 posts
 
If the stand is full of sand, it is decoupled. The term refers to bass to room coupling. The floor (normally). You have sand filled stands? I’d doubt that any bass harmonics are transferring down the stand. If you want to tune the bass (increase) you "beard" the front of the stands. By increasing baffle width and height it can be, a nice sonic nugget. Takes a bit of tinkering though...You’ll get it.. Even cardboard will let you work out the W x H. Convex, Concave, Flat, or split baffle...

Regards

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