Philips SPA7350, 2.1 channels, 50 W, 0 - 20000 Hz, 0 - 2000 Hz, 6.5", Wired Philips SPA7350. Audio output channels: 2.1 channels, RMS rated power: 50 W. Satellite speaker frequency range: 0 - 20000 Hz. Subwoofer frequency range: 0 - 2000 Hz, Subwoofer driver diameter (imperial): 6.5". Connectivity technology: Wired. Master (outer) case width: 20" (508 mm), Master (outer) case length: 24.2" (614 mm), Master (outer) case height: 16.7" (424 mm)