Mids on Infinity Overture 2's

I've had these speakers for 5 years. I've enjoyed them immensely, and they're great with mid-fi receivers (like my Denon 3300). But when hooked up for stereo to my McCormack RLD-1 and DNA 0.5 (Rev. A), the vocals sound...well, not right - or maybe just not like I'd like them to. I can't decide if the vocals are "veiled", "blurred", or just not as up front as I'd like.

For those who have heard these speakers, how would you describe the vocals? I haven't heard many "hifi" speakers, as I've never lived near a city with "hifi" dealers, so I don't have firsthand knowledge of what many descriptions (such as "bright", "warm", "dry", "musical") mean. Getting an idea of how others characterize my speakers would be tremendously helpful.

Thanks!
HC