Sony HT-CT150 3.1-Channel 3D Home Theater Speaker System for $242.99 shipped.  Here is a screenshot for your reference.  Alternatively, it is available at Crutchfield for $249.99 shipped.  It features a 5-1/8" woofer, dual 3-5/8" tweeters, and 4 ohms impedance.  Most places have this home theater sound bar system for about $299.