The The PSD 218 high-performance powered subwoofer designed to simplify creating active 2-way systems. It uses an integrated 2-channel digital power amplifier with internal 24-bit 1-in-3 DSP controller to optimise the sound quality and protect the subwoofer and full range system used with it. The PSD 218 with an 18" Electro-Voice DVX3180 long-excursion woofer delivers the performance demanded of 18" subwoofers in professional concert sound applications. It produces extended low frequency response from a compact enclosure with plenty of punch. | 
