Hi,

No. There are other items that follow the Feng Shui principle in my place, not the least crystals, mirrors and statuettes plus windchimes, BaGua's and the full assortment (I really need to tidy up though   ) and still others are merely there to annoy the technocrates. 

But the Felt Dots together with the Harmonica Plates fall under micrrolevel acoustic menagement, with one principle aim in mind, to enjoy music more and not to pay silly money.

Oh and as for Feng Shui, any true Master will tell you that common sense is even more important in Feng Shui than following the rules....

Ciao T