Is Subwoofer Elevation a Viable Option?


I know this topic has had various discussions over the years, but despite a review of past comments, I could not get a definitive answer on its relative advantages and disadvantages. 

I run three subwoofers in my two channel system and am very pleased with the results, but some questions keep nagging me.

Because the sub is typically on the floor, along with all the furniture in the room, wouldn't low frequency waves be blocked/diffused a lot. Wouldn't the sound from a subwoofer benefit from an unencumbered dispersion of energy into the room?

Coaxial driver speakers have their "woofer" at ear height without causing issues. Why not ear height subwoofers?

Is it just because subs are large, heavy and require a power cable or are there sonic reasons for keeping subwoofers on the floor?

128x128tony1954

One thought is that the subs get some help from the floor in reinforcing bass output, which would require them to work less hard and with lower distortion so there may be trade offs in raising them off the floor.  That’s all I got, but it’s an interesting question. 

Because the sub is typically on the floor, along with all the furniture in the room, wouldn't low frequency waves be blocked/diffused a lot. Wouldn't the sound from a subwoofer benefit from an unencumbered dispersion of energy into the room?

@tony1954 No. At those frequencies the furniture is acoustically transparent.

There is a good couple of hours worth of reading if you google the term stacking subwoofers. 

According to Rel, the answer is NO! The feet are at the proper height for the down firing speaker. Raising or lowering them is not advisable. I suspect its because it interferes with the subs proper interaction with the floor.