Phoenix Gold Z8150 – 8 300 Watts Slim Active Monoblock Bass Enclosure OPEN BOX. With the Z8150, we are introducing a slim-profile amplified subwoofer. Slim enough to fit underneath in a hideaway location, it is a quick and easy way to add a high-powered subwoofer solution to your audio system. The integrated amplifier in the subwoofer features both subsonic and low pass crossovers, and a control for adjusting the input sensitivity from 0.2V to 6V. Both high level (speaker level) and low level (RCA type) inputs are present, making this a universal solution for use with any head unit or other input source. For further flexibility in the use of a subwoofer, a variable bass boost control has been included. You can control the subwoofer level with the remote level control module. Your new amplified subwoofer features the following. MOSFET PWM (Pulse Width Modulated) Power Supply. Thermal, overload and speaker short protection. Soft turn-on circuit. Remote turn-on/turn-off circuit. Variable input gain control. Variable low and subsonic crossovers. Variable bass boost (0 to 18dB). Variable phase (0 to 180 degree). RCA low level and high level inputs. Auto Power On: ON/OFF. LED power and protection indicators. Remote subwoofer level control. THIS ITEM HAS BEEN TESTED AND IS WORKING LIKE-NEW. THIS ITEM IS NON-REFUNDABLE.