Ok..i was really happy with my ref 9 SE v3.1...but..i'm moved to multiamp..so i've placed the amps on the ribbon tweeter..the one it's Ok..the second only "hisssssssssssssssssssssssssssssssssssss
ssssssssssssssssssssss"..tested with a fullrange speaker..again ok..On the high route.."hisssss". The problem is solved with amp rolling..but..I want to use my Nufoce!!!

Ideas)
Sorry, as usual, for my poor english..

Cheers