The award-winning, THX-certified ProMedia 2.1 computer/gaming speakers are the perfect match for any desktop. But more importantly, this compact, three-piece setup delivers high-quality sound that puts some home theater systems to shame. Music, Movies, TV, Gaming, Klipsch ProMedia.Troubleshoot: (1) If no sound, ensure that: - Power, input, speaker cables and connectors are securely attached - Software is properly installed and functioning - Computer sound (control panel) volume is turned up and not muted - LED glowing (2) If one or more speakers have little or no sound, ensure that:- All cables are connected properly- Connectors are fully "seated" in sound card and speakers- Main and subwoofer level controls are properly adjusted on control pod.