1.For XLR1 Karon female seat balanced or unbalanced signal input.
2.RCA1 lotus seat signal input.
3.For XLR2 male balanced signal output, outputs a full-frequency signal or a high-intermediate frequency signal without bass, switch K1 controls the output of LR2 male (full-frequency or high-pass).
4.Switch K2 is for phase conversion.Can be used with other power amps.
5.W1 is the volume switch, which is the total volume control of the subwoofer.
6.The D4 light LED is the signal overload voltage limit light, D5 is the signal indicator light, and D1 is the power indicator light.