Amazon.com has expanded its Black Friday offerings to include Energy's ESW-M6 powered subwoofer, which carries a $319 savings to bring the final price down to $279.99. The retailer is also offering JBL's Balboa five-inch center channel speaker for $79.99, along with LG's BD530 Blu-ray player for $69.99. 

The ESW-M6 features a 6.5-inch aluminum woofer powered by an 800-watt amplifier in a cube housing, with a front-firing, down-ported design that is claimed to improve impact. JBL's Balboa center-channel speaker integrates dual 5.0-inch speakers, while a 0.75-inch tweeter sits between the main drivers.