Got them dialed in and they are sounding pretty good. A little bit warmer than the sony speakers they replaced with a recessed high-end. It seems as if the Sonys resolved high frequency detail just a hair better than these Infinitys, but its barely noticeable. However, the rest of the frequency range is superior on the Infinity. Bass notes are smoother (doesnt really reach much deeper though, but the Sony rocked an 8" woofer vs dual 5.25" on the Primus 250s) and mid-range is much clearer. With the mid-range on these speakers, lyrics are much more forward and dialogue is much more audible at lower volumes. They also seem to blend with my Def tech center better than the Sonys did as it is difficult for me to tell when sounds are coming from the fronts vs the center unless the sound is intentionally directional in nature.
And that brings me to the imaging and soundstage of these speakers. They are phenomenal in that category. Sounds are so much more expansive with these infinities. Sounds completely envelop the MLP even when in 2.0 stereo mode. And the soundstaging has a lot more depth to it with vocals being very forward incomparison to the Sonys which has a flatter soundstage. The imaging on the Sonys were decent and fairly precise, but these infinities put them to shame.
Thus far I am quite happy with the purchase, especially at the price I paid for them.
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