... laptop speaker 1. Classic again, MDF & aluminium, built-in antenna, shortest latency (<0.5ms), 10 meters wireless transmitter.2. Subwoofer: Material is MDF ... resistance: yesVolumn Control: KnobLouderhailer: higher: 3 inch,4Ω,15W; Lower: 5 inch,4Ω, 30WLower controler: yesInterface: 2.4Gwiress receiver,4RCA audio slotPower adopter ...