Philips MMS430/00, 2.1 channels, 100 W, 180 - 20000 Hz, 20 - 180 Hz, Wired, 15" (380 mm) Philips MMS430/00. Audio output channels: 2.1 channels, Peak Music Power Output (PMPO): 100 W. Satellite speaker frequency range: 180 - 20000 Hz. Subwoofer frequency range: 20 - 180 Hz. Connectivity technology: Wired. Master (outer) case width: 15" (380 mm), Master (outer) case length: 17.3" (440 mm), Master (outer) case height: 14.8" (375 mm)