Philips Immersive Sound HTS5550X/78, 65 dB, FM, 3 Ω, 4 Ω, Passive subwoofer, 2,54 cm (1")
Philips Immersive Sound HTS5550X/78. Signal-to-Noise Ratio (SNR): 65 dB. Supported radio bands: FM. Center speaker impedance: 3 Ω. Satellite speaker impedance: 4 Ω. Subwoofer type: Passive subwoofer, Subwoofer driver diameter (imperial): 2,54 cm (1"), Subwoofer impedance: 3 Ω