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The difference between Klipsch rp-250c and rp-440c rp-450c

rp is the speaker series, the basic grade. The number in the front represents the number of woofer units, the number in the middle represents the size of the woofer unit, 0 is the different version, and C means center!

rp-450c is the reference series, four 5.25-inch woofer center speakers.