I agree with most of what @seikosha says in his response above, especially the part where he says "no, there's nothing wrong with these highs". I may be more sensitive to brightness and etched highs, but I feel that the highs on my SAM HOs (1.5 ways) are as good as I want them to be, i.e. they have all the air, detail, and shimmer that I want, but with the addition of the coherence that a single driver gets you. The first cut on Santana's Abraxas (Singing Winds, Crying Beasts) is the cut I use to benchmark what I am hearing on the highs. The chimes should sound very holographic, with tons of color, varied tonality, and air, and you should "feel" the fingers running through them, making them sing. Goosebump territory! The Omegas do this for me.
As far as bass goes, I purposefully offload the low bass from the Omegas to a subwoofer for a few reasons. 1- The Omegas are not designed to be bass monsters, and my bass response in the spots where I have the best imaging and midrange is terrible. Enter the subwoofer! 2- Trying to reproduce low bass on a single driver may introduce distortion on the rest of the range. I've heard this myself. And finally, 3 - I get better efficiency from my 8wpc SET monoblocks when send the bass range to my sub, and let the SET amps deal with the all important midrange and the highs. Hope this helps!
As far as bass goes, I purposefully offload the low bass from the Omegas to a subwoofer for a few reasons. 1- The Omegas are not designed to be bass monsters, and my bass response in the spots where I have the best imaging and midrange is terrible. Enter the subwoofer! 2- Trying to reproduce low bass on a single driver may introduce distortion on the rest of the range. I've heard this myself. And finally, 3 - I get better efficiency from my 8wpc SET monoblocks when send the bass range to my sub, and let the SET amps deal with the all important midrange and the highs. Hope this helps!