Mackie SR18S 1600W Professional Powered Subwoofer - 18 Inch freight V3 provides optimized reference points

V3 provides optimized reference points to begin the recording process

Optimize MR monitors for your mixing environment

or for permanent install applications including conference rooms

the unpowered ICOA 12 speaker by LD Systems and its design with a coaxial design and rotating

Mackie SR18S 1600W Professional Powered Subwoofer - 18 Inch freight V3 provides optimized reference pointsThe Mackie SR18S 18 Inch 1600W Professional Powered Subwoofer is designed for real world working musicians, DJs, events, venues, and beyond. The latest acoustic processing technology, powerful amplification, and versatile configurations deliver incredible sound and unbeatable reliability. Custom Voicing modes and a variable crossover make optimization for your system easy. Built Like A Tank construction features a rugged wood cabinet and tough steel