... amplifier Frequency: 2.4-2.483GHz Shortest Latency: <0.5ms Frequency response: 20-20Khz 2.1 speaker system with amplifier1. Classic ... 89(L)*80(W)*154(H)mm;Frequency: 2.4-2.483GHzWalt: 45WImpedance: 4ΩSNR: ≥95dB (1KHz THD1%)Sensitive: -85dB Frequency ... resistance: yesVolumn Control: KnobLouderhailer: higher: 3 inch,4Ω,15W; Lower: 5 inch,4Ω, 30WLower controler: yesInterface: 2.4Gwiress receiver,4RCA audio ...