I’m thinking of getting some new front speakers to match my Axiom center and rears, but I want to make sure the fronts will be full range and be able to reproduce SD-DVD and HD-DVD soundtracks accurately.

For example, the AXIOM M80s state:
• Freq Resp +/-3dB (Hz): 34 - 22kHz Graph
• Freq Resp +3dB- 9dB (Hz): 25 - 22kHz

I was looking at these OTHER SPEAKERS that stated:
• 50Hz - 20kHz

Sorry to be so ignorant, but what’s the difference there?

VP150 / QS8(3) / M60s