Originally Posted By: brwsaw
Have you tried changing the polarity of the 180? I know it seems odd and it's pretty likely it's wired correctly but I've seen (heard) it needing to be done on the M80. This would be my next step...It's frustrating because you know it's already right but when you hear it (if I'm right) you'll know.

Great idea
Polarity check done
It is OK
Thanks

denon 991 /M80's /vp150 & 180 /4x QS8's
Velodyne 15"/ Dbox 12"
ps4 benq w1070 -grand view 106" FF