Hey just because there rated at 300w dosent mean you cant drive them with 450w! My Dynaudio speakers are rated at 200w and I drive them with a 350w per channel amp no problem they sound fantastic and I love the extra power (so do the speakers). Sure your 200w will drive the more power hungry speakers but if you listen fairly loudly then you will be seeing your amps power guard lights glow a lot! Not the best situation.
Matt M
Matt M