Memory Express Computer Products Inc. - The Logitech Z523 is a 2.1 speaker system with rich bass and 360-degree sound that lets you rediscover the art of listening—all around the room. Pick
Logitech Z623 review | TechRadar
Logitech Z523 Speaker System with Subwoofer - Black complete in box 71030562721 | eBay
Logitech Z623 2.1 Speaker System with THX Certified Audio
Logitech Speaker System Z523 - Review 2010 - PCMag UK