Given the OP's stated preferences;
i like both Vocal-Centric as well as Electronic-Bass-Centric music. i expect the speakers to be able to handle Vocals out "out of the box" so to speak, and Electronic Bass with subs. I also expect the speakers to be able to handle everything EXCEPT electronic bass without subs.
Yeah, the Revels would be nice, and within their limits would likely be clearly superior. But like many such HiFi loudspeakers, physics gets in the way. They'd be constrained by compression, both long term thermal and instantaneous magnetic compression. Their ability to accurately track transients at realistic playback levels, and their inherent tweeter output capability, would be dramatically different than the QSC. These are just going to be personal decisions based upon one's priorities and intended playback conditions. Now even though the difference would be dramatic, is a subtractive difference, in that the Revels aren't doing anything wrong. It's just upon being exposed to systems with high dynamic capability, such as the QSC, and contrasting that to typical dome type tweeter mains, the reproduction differences become more clear.
The other various comments on the QSC products are spot on wrt my experience w/each.
The KW is superior due to the enclosure of the K series,...however the value is superb either way. Also, the rope caulk, or as I prefer "duct seal" (much thicker/easier) damping of the backside of the waveguide helps audibly. I picked them up for surround, four of them,....and I've yet to remove them from LCR duty. They're quite amazing what they offer.
I'd guess that the KW122, once optimized in LCR duty (and damp the back of the horn), is a significant value considering what one is receiving. I filled the K8's with even more insulation for internal acoustic damping, but didn't A/B the change. I just didn't think there was enough. No question, the components are robust, except the enclosure. For surrounds/rears, and fully damped ABS, they'll be fine. As I stated before; as a genre, this mid-priced, overseas mfd pro audio from the majors (QSC, JBL, etc.) offers extra-ordinary value. The quality mid-priced active loudspeaker marketplace is fiercely competitive and has created killer products.
I've never had the pleasure, and I'd enjoy listening to the '153, 3-way, and discerning the voicing differences offered there. I'd like to understand their marketing there. However, all said, I'd think most applications would benefit from the pattern control and directivity of the two way. The three way also throws in a passive X-over too I believe, as it's still the same two channel amplifier across the entire series.
I'd strongly suggest anyone give a good look at the KW122, or to a lesser degree the ABS constructed K-8, K-10, and the K-12. Takes whatever steps to mitigate inherent characteristics weaknesses.
Good luckEdited by FOH - 6/15/12 at 12:06pm