1 Power switch
Front panel introduction
2 Audio input selecet UP : bluetooth mode
Down : line in mode
3 Subwoofer frequency adjustment
Rear panel introduction
1 Bluetooth antenna jack 2 Line in ( AUX) jacks
3 Right speaker output
Specifications
Chips
1 2
®
4 Subwoofer volume adjustment
5 Bass adjustment 6 Treble adjustment
7 Total volume adjustment
4 Left speaker output
5 Subwoofer output 6 Power input (DC12-24V)
TPA3116+NE5532+LTO72+QCC3003 5.0
Power input DC12-24V ( recommend DC19V 4.75A) Current >3A
Output Power 50Wx2+100W @4Ω 19V,10%THD+N Speaker impedance 4~8Ω
Bass adjustment range
Subwoofer cutoff frequency adjustment range
40~240Hz
±10dB
Bluetooth version
+12dB, -14dB Treble adjustment range
SNR >82dB
Net weight 130x122×33mm
580g Size
Q & A
A. The positive and negative poles of the power supply are connected reversely;the power supply voltage is too
is improper.
6. Will the amplifier be burnt?
B. If the board requires a DCpower supply, it is not allowed to connect directly the AC transformer power supply
(this can be rectified and converted to DC power before it can be used).
C. To confirm that the wiring is correct, then connect with the power supply.The wrong line connected or the
short circuit both will cause damage to key parts!
5.The volume power is not enough?
B. Whether the power of the speaker itself is too large or too small, or the bass performance of the speaker itself
is poor; the structure of the speaker box; these abnormalities will cause breaks.
2. No sound output,no sound in 1 channel?
high, exceeding the limit operating voltage of the board.
A. The power input is insufficient,confirm the wiring is correct first, and the supply current is sufficient.
are all related,any kind of deficiency will affect the power.
C. left and right channel speakers (+)(-)output are independent, can not be connected to each other.
A. The speaker is broken, or the speaker cable is not connect well.
B. The input cable is not in good connect; the wiring is damaged; the output of the device connected to the input
3. Volume broken and breaking sound when turn loud?
B. Thespeaker itself has poor performance or damage,and the speaker power is too small or too large.
4. Speaker broken sound when subwoofer amplifier volume turn loud ?
A. The power input is insufficient, first confirm the wiring is correct, the supply current is enough.
Power and power supply voltage, the amplitude of the sound source signal, the size of the speaker impedance
D. The input connection has other playback devices, and some devices share the power supply to cause noise.
Most of our amplifier board use DC power supply.The board itself does not produce current sound and
noise.
The main causes of current acoustic noise are:
1. Amplifier board has current sound and noise ?
A. The power supply filter used is not good; the current sound is caused by wrong input by the power or audio
input.
B. The input signal quality is poor; the output of the device connected to the input is improper,and the noise is
caused by the abnormal input of the audio source.
C. The input cable is of poor quality; the line is in poor connect; the wiring is damaged; the wiring is suspended.
