Do know that hardwood floors are very susceptible to the vibrations caused by speakers resting on the floor causing sound anomalies.
Does putting a rug on the floor capture sound.
Don t put an area rug over a very long pile carpet such as a frieze or a newer soft carpet such as smartstrand because the area rug will not have firm support and will shift buckle and wrinkle.
There s no need to fully carpet the floor as even a selection of scatter rugs will help.
If noise from downstairs neighbors is coming through your floors your first step should be to add carpeting to help dull the sounds.
It can even be laid over wall to wall carpet there are numerous reasons why area rugs are so popular and yet some people may be uncertain as to whether they should cover up their beautiful floors with a rug.
More likely the sound waves are being re radiated from the floor up and causing acoustical not vibration sound waves.
This has been very sucessfully reduced by mlv on the floor.
Offsetting the rug can allow both patterns equal weight.
Heavily carpeted floors will absorb some sound from your speakers and damped the overall audio effect in a room.
You will need to cover the whole flor as sound is like water and will find the path of least resistance.
To further reduce sound transmission add carpet padding to new or existing carpets.
Even carpeted floor tiles can help damped audio from above.
Do recognize floor surface attenuation.
On a hard floor an untethered rug is more likely to slide or slip but when layering area rugs over carpet the rug is more likely.
The top rug does not have to be parallel to the bottom rug.
Rug safety rugs should always be anchored whether used on a hardwood floor or on top of carpet.