For the KEF Reference 203.2 (could not easily find the specs for the 203.1), the LF crossover is 300Hz in these speakers and sensitivity is 89dB/2.83v/m so the woofer eats half the power and the power rating is 50-200w. So, I would guess, again, that the 300w amp would be the more effective solution.
Kal.... What do you think about my observation (based on measurements) that the equal power frequency (350 Hz or thereabout) is not what natters? I have found that with a real music signal the peak voltage swing requirement for the higher frequency signal is only met by a power amp with substantially greater power rating than that based on equal power.
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