4 or 8 ohm connection for a 6 ohm speaker?


I have a pair of Thiel CS2’s that have a nominal impedance of 6 ohms. My mono blocks have output impedance connections for 4, 8 or 16 ohm speakers. Is it best to connect the speakers to the 4 ohm or 8 ohm connections? 
Thanks for your thoughts.

Bill from Nova Scotia
wgs57
Bill,


You can try all 3 to find out which you prefer with your speakers. It will not hurt anything.  I would imagine the 4 , or 8 ohm tap would be in your range of preference for your speakers..
Thank you Timo62 for the reply. I have them on the 8 ohm tap at present and will try the 4 ohm tap next. 
Hi Bill, I would suggest the 4 ohm. Please report back your findings the differences.
It makes sense to try the lower tap first, but there definitely have been cases of particular combinations of amp and speaker where the tap a little over the nominal impedance sounds better.  Of course, if you ever look at some measurements, nominal impedance can be a pretty fuzzy term.
Roger Modjeski ( music reference ) advocates light loading but also listening. Clipping is bad, so listen for that also. I light load my Vandersteen TreoCT ( an engineered easy load at 6 ohm nominal ) with the 2 ohm tap on my RM-9. Amp stays in class A longer and at the relatively low volume I listen at - sounds better.
have fun - enjoy those great speakers! And the music !