I don't find I need a sub with my M80's. Actually, I have the sub turned off when listing in STEREO mode. The M80's give me all the bottom end I need.

I suppose if you are listening to Hip Pop or as Alan said Pipe organ, it could add a subtle enhancement.

For my EP500 I have to be careful not to run it too hot if I have it on for music. Too much EP500 for music does not sound natural. However, this is usually not the case for movies.

Remember, much of this can depend on your room characteristics and seating position.


paul

Axiom M80, VP180, Qs8, EP500
Epson 3020
Rotel RB-880
Denon AVR-990