There is only a few inches in height difference from the M3 on 36" stand to the M80s. I doubt that is the problem. Have you checked the binding straps on the back of each M80 are they both flush to the bind post?

And lastly there is quite a difference from the M3 to the M80s, the M80s are much more forward sounding than the M3s, can you desrcibe what the differences are that you are hearing?


Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70