Adorama offers the Polk Audio LSiM 704c Center Channel Speaker in Midnight Mahogany for $229.99. With free shipping, that's $520 off list and the lowest price we could find, although we saw it for $10 less last August. It features a 3.25" mid-range driver, 1" tweeter, dual 5.25" woofers, 70Hz to 30kHz frequency response, and 8-ohms impedance.