DelD,
The M60's binding posts, and ALL the binding posts on all of the Axiom speakers will indeed accept a 1/4-inch spade lug as well as 3/8-inch spades.
First unscrew the binding-post knob all the way, then lift up the little gold washer at the bottom. Below the threads, on the post, you will see in indent into each side of the post. That is where you put the 1/4-inch spade! See?
Brent is correct and so are the instructions. This may not be true of older Axiom models because we did change the binding posts quite awhile ago.
Regards,
