SANWU® HF69B 6W+6W Dual Channel Stereo bluetooth Speaker Amplifier Board

Description Product model HF69B bluetooth power amplifier board Small standby heating good quality stereo suitable for small bluetooth speakers Output power 6W 6WDimensions 70 x 40mmStereo Dual channel stereoApplicable speaker impedance 6 ohms 8 ohms if the horn impedance is too small there will be a phenomenon of amplify volume then staccato it will be easy to burn the speaker Supply voltage 5V DC or 3 7V lithium battery during using if the connector cable is too long or the battery is dead or the voltage is too low the volume will be slightly up then staccato Supply current 1A if the current is too small turn up the volume it will appear staccato phenomenon Charging interface When charging interface is powered by the lithium battery the supply voltage is 5V And mobile phone charger can charge a single lithium battery the maximum limitation voltage for battery is 4 2VDC by the charging management circuit bluetooth interface model PH2 0 2PBattery interface model 2 54 2P Note 1 When the switch is ON the Micro USB port is the charging port it will work if powered by the lithium battery When the switch is OFF the Micro USB port is the power supply port it doesnt need to connect with lithium battery 2 If turn up the volume during using the horn will appear staccato phenomenon please check the power supply If the output current of power supply is not enough the intermittent sound will occur 3 It is recommended to use the lithium battery