Wilson Alexia 20x15 Room

I've heard the Magico S5 in about 5 different systems. They sounded better driven by the Absolare Passion 845 PSET than any other amplifier.2nd best IMO was their match with a Constellation amplifier. It was just okay with the VAC amplifiers. It's truly subjective of course.

Audioconnection,
That's an interesting observation and implies you're familiar with this system.If better quality cables resolve this problem it's certainly cheaper than replacing the speakers. Or perhaps the OP just simply wants new speakers.

Well it seems according to JohnnyR big sound is possible with his suggested speaker cables.

Yes,
Excessive room absorption takes the life and natural vibrancy of music away. The resulting sound is dead and uninvolving.I'd give JohnnyR's suggestion a shot.

Madfloyd,
Posts such as yours are what make audiogon a valued resource,perspective from actual owners of various products. It doesn't mean that the OP will have the same or similar outcome, but it's certainly worthwhile information.
Charles,