Just got my new M60's today. Unfortuanly Purolator bashed one up pretty good. After about 10min of listening the lower woofer on the based up unit started rattling like crazy under heavy bass'ed songs. Amie from Axiom is sending me a new woofer today though so I'm not complaining. Now that I have the 60's I have no idea how I'll hold of for surrounds and a sub (got a center last week)!