What are you considering "Suspended" hardwood floor?
Free-Floating Pergo/Wilson-Art/Armstrong?
Glued, or Snap-Together?
Or Nail-down 3/4" Tounge-n-Groove?
Or 3/8" Tounge-n-Groove Glue down?
Even if you are talking about a Floating floor which expands & contracts as one piece. It floats over foam padding which is compressed by the total weight. I honestly could NOT see your speakers walking/wobbeling off these coasters no matter how much Low End you are experiencing in this new room.
Free-Floating Pergo/Wilson-Art/Armstrong?
Glued, or Snap-Together?
Or Nail-down 3/4" Tounge-n-Groove?
Or 3/8" Tounge-n-Groove Glue down?
Even if you are talking about a Floating floor which expands & contracts as one piece. It floats over foam padding which is compressed by the total weight. I honestly could NOT see your speakers walking/wobbeling off these coasters no matter how much Low End you are experiencing in this new room.