This is pure power amplifier board, the sensitivity of the input signal of 1.5Vrms, if your input signal voltage can't reach this value, recommend add preamp. Mono channel, for 2.0 channel need bid two. The rated output power: 500W ( DC +/- 65V power supply, 4 ohm load, distortion 10%) Efficiency: ≥90% SNR: 90dB color: blue The total harmonic distortion: 380W (+ /- 65 power 4 ohm speaker, distortion Less than 0.1%) 280W (+ /- 65 power 8 ohm speaker, distortion Less than 0.1%) Frequency range: 20Hz-20KHz Speaker: 4-8ohm Voltage Magnification: 36 times Input sensitivity 1.5V (RMS) 0. Output short circuit protection: Yes That output DC bias protection speaker protection: Yes Over-temperature protection: Yes, radiator FET temperature higher than 100 Celsius, turn off the output! Amplifier board size: length x width x height = 98x43x30mm Weight: 95 g
Use precautions:
Rated supply voltage is DC +/-65V, +/-58V ~ +/-70V range, do not over 70V! positive and negative do not pick wrong Recommended power supply DC +/-65V Recommended 4-8ohm / 10-18inch speaker Carefully check before electricity, ensure the wiring is correct. Material: CCL
Note:
Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
As small as it is, this thing makes a lot of noise. Take care not to blow up your speakers! You need a double (+ and -) power supply, at least +50V and -50V.
As for the connections, they are a bit unclear but here they are. Take the pcb in front of you with the fan on the left and the blue connector on the right (see attached photo). The connections of the blue connector from top to bottom:
speaker +
speaker -
+60V
GND
-60V
The connections of the white connector from top to bottom:
input ground
input positive