RCF SUB18-AX Active 18 Inch Powered Subwoofer with 2200 Watt Class-D Amplifier - Black 100708327 the QuadCore has no moving

the QuadCore has no moving parts

replacing them in the hop sequence with alternate channels

Sine wave output with a THD < 0

2-segment LED meter per channel

RCF SUB18-AX Active 18 Inch Powered Subwoofer with 2200 Watt Class-D Amplifier - Black 100708327 the QuadCore has no movingRCF SUB18 AX Active 18 Inch Powered Subwoofer with 2200 Watt Class D Amplifier Black The SUB 18 AX is a portable 18" high power active subwoofer designed for live sound applications, offering advanced processing, a color touch panel, and remote control via Bluetooth. Its next generation transducer and powerful Class D amplifier produce sound pressure levels up to 135 dB with impressive clarity and headroom. Ideal for small to mid sized venues, the SUB