Here is what HIFI News reviewed and lab tested about these speakers, maybe now you'll realize that although the "8w SET made some nice sounds, they would have not been taken to perform at their best with an 8w set.
LAB: KEITH HOWARD
We measured a minimum modulus of 2.9ohm and a minimum EPDR of 1.3ohm at 92Hz, with further dips to 1.6ohm at 219Hz and 2.0ohm at 584Hz.
So the One.R is a tough loudspeaker to drive, despite its powered bass section.
Cheers George