4 ohms , 6 ohms, or 8 ohms???


My Canton 3.2 DL reference speakers sound wonderful.
They are rated up to 600W and the cabinet states  IMPEDANCE 4 TO 8 OHMS
I am considering a new amplifier which actually has one set the resistance at 4 or 6 or 8 ohms. 
I do not understand how to make that decision:
Should I run the speaker cables from new amp to the Cantons as 4 ohms, 6 ohms , or 8 ohms?
I would really appreciate some feedback on this...is there a simple, obvious answer?
wahoo101488
Looking at the measurements, here:

http://www.stereophile.com/content/canton-reference-32-dc-loudspeaker-measurements#BSJ98rl0dgKIixXi....

This is a very difficult to drive speaker. They have an impedance below 4 ohms for most of the bass up until around 700 Hz.

I would be VERY careful in buying any tube amp for this speaker pair. If you can audition I’d instead suggest you try a good solid state amp with good current capabilities.

By all means, LISTEN, but I worry based on this you may end up with pretty uninspiring bass with anything but a stiff SS amp.



Best,


Erik
While Erik's point regarding being very careful in buying any tube amp for this speaker pair is certainly good advice and true, it should be noted that there are also tube amps that could likely annihilate and disintegrate them as well. Like this one http://www.atma-sphere.com/Products/#MA-3

That said, I'm in the SS camp.

In answer to your question about whether or not it would be preferable to hook up to an amp via 4, 6 or 8 ohm, my opinion would be to go with "8" to essentially lower (with respect to 6 or 4) the current output of the amp and in so doing make its life a little easier per se and lower your electric bill. However, I'm not certain if there is an audible advantage in using a lower ohmic value connection so I'll await the input of other more knowledgeable folks than I on this forum. I don't think there is an audible difference.