they seem like serious bargains to me , especially the rtr series...
The Rokit 10-3 is an active speaker with 80w going to a 10" woofer, a 4" midrange with 30w, and a 1" soft dome tweeter driven with 30w. There's no horn-loading.
I looked at KRK speakers a couple years ago because they offer studio monitors. Unfortunately, I dismissed most of their speakers as being suitable only for near-field monitoring. I did add their Expose speaker the other year, and I've added the Rokit 10-3 for now so you can see it on the list. It's at the bottom.
For home theater, we need something more geared for mid-field.
A point in its favor is the 10" woofer.
But there are a few clues as to its weaker performance. Hoffman's Iron Law says you can have deep extension, small size, or high sensitivity. Pick two. Bill F also pointed out that there's kind of a fourth: low distortion.
Working backwards from their claimed 113db max spl (with no qualification of what level of distortion to achieve that), assumed at 1 meter, and using 80w, "near walls," you get 91db as a sensitivity for use in the spreadsheet for comparison purposes. It would need another 6db of sensitivity to achieve the 105db we'd need on short peaks.
Giegar, contrast the Rokit with the JTR Single 8 that you recommended in the BIC thread linked to above: http://jtrspeakers.com/home-audio/single-8ht/
Woofer size: 8"
Tweeter: compression driver, in a waveguide that's formed by the woofer.
Frequency Extension: 80hz (one may need to use a 100hz crossover)
Power Handling: 600w (RMS / Program, so either with a continuous test signal, or with typical program material. Either way, that's how much power they're saying it'll take before melting something. The amount it'll take before distortion is objectionable is lower than this).
It is able to provide 105db peaks using a typical receiver (just barely). But it'd also work great with 200-300w outboard amps.
Finally, I've added this beautiful speaker, but I don't know pricing for it.
I believe Westlake Studios have a division that makes studio speakers?
Two 12" woofers.
38Hz extension, which is surprising considering the 97db sensitivity.
But, wait...the sensitivity is reported as 1m/2.83v, and it's a 4 ohm speaker, so I normalize the sensitivity down 3dB so it ends up in the mid-high range of 94db groundplane.
Another example of the compromises that must be made in designing speakers. They wanted these to work for mixing music, without a sub, so they sacrificed some sensitivity. These look awesome and deserve display!