I think the Exposure would be fine with the Dyns, either the DM 2/8 or small Excites. The Dyns you are considering aren't better or worse than the Quads, just different. And probably different in a way you will appreciate, especially the DM's - I would say not quite as warm as then Quads and better able to handle transient peaks and sustained loud passages common in rock music. Dyns will act more like a professional monitor when pushed than the 12L2'S - which will be happier playing acoustic music and human voices.
With that said, the little Exposure will start to compress the signal at higher volumes no matter what speakers you are driving - it's personality and performance envelope perhaps more suited to the same music as the Quads. Remember what kind of amps and speakers the Rolling Stones use when they play live...
With that said, the little Exposure will start to compress the signal at higher volumes no matter what speakers you are driving - it's personality and performance envelope perhaps more suited to the same music as the Quads. Remember what kind of amps and speakers the Rolling Stones use when they play live...