AIYIMA A1001 Color:Black with no Power Supply and listen to the noise

and listen to the noise in the speaker

Upgrade your speakers and subwoofer with a 150W@4ohm x2-channel amplifier

but it will be obvious after the amplifier is amplified

you can adjust the bass frequency according to your needs3 support the bass frequency adjustment of the left and right satellite boxes

AIYIMA A1001 Color:Black with no Power Supply and listen to the noiseDescriptions: Power100W 2ohmFull frequency response 20Hz 20kHz(3dB), BASS cut off frequency adjustable. The speaker matches the impedance2 8Number of Channel: MonoWorking Voltage DC12 24VTHDOutput 1W@ 0. 03%SNR106dBInput sensitivity0. 2mVDimension: 118. 5*98*33MM(without protruding knob section)Bass cutoff frequency range adjustment: 40 300HzControl: Potentionmeter knob and toggle switchAudio input: RCAAudio outout: Gold plated interfaceSlope of bass