1.P1 connect power supply and signal output to the power amplifier board

2. Power supply + v G -V is the power supply port, connect positive and negative dual power DC +/- 12v, or +/- 15V.

3. Signal output GS, G signal ground, S subwoofer signal output, connected to the signal input of the power amplifier board.

4. PHASE: phase.

5. HPF front output: 120HZ low-cut switch.

6.LIMIT: Compression limit lamp, overload lamp.

7.Signal: signal light

8.Power: power light

9.LINE LEVEL: volume control

10.Output L, output R: front full frequency and high pass output.

11.INPUT L INPUT R: signal input, sensitivity 1v (0dbV)

12.CROSSOVER: Frequency adjustment 80-150HZ.

Size: 208x46MM

Model Number: 2066408469

Package Include: 1 Pc x Subwoofer Amplifier Preamp Board