Klipsch RF-62 sound question

[SoundFreak]

As I've already posted I purchased the fronts and center listed above and am loving the sound. However, like most humans, I'm never completely satisfied

How can I get deeper dialog from theses speakers with my Yamaha V663 receiver? When I bought the center the sales person mentioned "James Earl Jones" for dialog type and I'm not exactly getting that. It's not as deep as I would prefer. I used YPAO with no modification after. Last time I tried to mod before running YPAO and it didn't sound so hot.

Should I use bi-wiring? I only have one receiver so don't think I can bi-amp.

Should I just try to tweak the eq? Problem there is I don't know which frequencies to tweak. I know from older car stereo hobby, left to right is typically low/mid/high.

Any info/advice would be greatly appreciated!!!

Something else I notice is Blu-rays give off high end dialog depending on the movie. Some sound incredible, others not so much...wut up with that? Dynamic Range is off on ps3 and receiver....