sir nels,
pls. check your pm
be976,
dito ko na lang sagutin ha para mabasa din ng iba with the same question.
You were asking if it's ok to use 6-ohmers as front.
I was also asking this question to myself when i was still scouting for speakers to connect to my 9060D.
If the specs at the back of your receiver says "Speaker Impedance: 6 - 12ohms" then have a peace of mind because your receiver and speakers will be operating safely even at high volume and no effect in the long run.
But if it says: "8 - 16 ohms only" then that is a minor concern.
Connecting speakers to an amp lower than what is specified makes the amps work harder. the lower the resistance, the more power is being drawn from the amp. and if the amp does not have the reserve power needed by the speaker (especially on loud movie passages and low frequency music) the amp may fail in the long run. The Speaker may also sound thin.
A "Lolo thunder' explosion may sound "5-Star" for example. Actually, you may not see the immediate negative effects but in the long run.
It's like this:
Car Manufacturers sets the top speed there product can run safely, say, 200kph Max. But, of course, you can run it beyond 200kph but there is a risk of failure.
For further readings, go to this link. You will notice I was asking the same question before.
http://www.pinoydvd.com/yabbse/index.php?board=10;action=display;threadid=1615;start=80