Sears offers the Nakamichi 2.1-Channel 280-watt Bluetooth Soundbar with Wireless Subwoofer, model no. NK11, for $229.99 with free shipping, bundled with $152.30 in SYWR points. (Not a member? It's free to join.) Assuming you'll use the credit, that's $222 off list and the lowest total price we could find, although we briefly saw it for $30 less four days ago (since expired). It features an 80Hz to 20kHz frequency response and includes a remote control.
Of note, Shop Your Way Rewards members may be eligible for additional credits and discounts.