I guess it depends on how neutral the Technics speakers are. At worst, the only difference will be a slight change in timbre as people (or aliens
) move around the soundstage; depending on what you watch this can be a trivial thing or more of an annoyance. You don't need to worry about things like sensitivity because the receiver has adjustments to make everything match up.
If you like your Technics fronts because the sound is clear and "open" then the match with the Axioms will probably be pretty good.
The big deal with Axioms is that they are one of the more accurate (ie flat frequency response) speakers in the price range, and as a result they seem to do a better job than most of letting you hear all the detail in your recordings. Klipsch and JBL tend to emphasize certain frequency ranges (which many people prefer, I'm not just saying they are junk) so in general you get a more exciting sound with rock but a less enjoyable sound with a broad range of music or with movies (where a clear midrange is particularly important).
