My observation with Walsh drivers like those in the OHMs is that they excel most on a good system with recordings that have a lot of mid-range energy. The large surface area of the Walsh driver available for conveying midrange compared to most other drivers is the reason I believe.
Big band and large brass ensembles is where this is most evident. I find many Duke Ellington recordings to be absolutely mesmerizing, for example. The power dynamics and brashness of the orchestra just come through in full bloom within a huge soundstage where everything is laid out perfectly for digestion with relatively little or no fatigue even at high volumes. No easy trick, even for horns!
Big band and large brass ensembles is where this is most evident. I find many Duke Ellington recordings to be absolutely mesmerizing, for example. The power dynamics and brashness of the orchestra just come through in full bloom within a huge soundstage where everything is laid out perfectly for digestion with relatively little or no fatigue even at high volumes. No easy trick, even for horns!