Active dual 18-inch subwoofer

The RM28PD features a built-in digital amplifier, active subwoofer, DSP audio control, and is a portable solution for touring sound and high-end fixed installations.

When multiple subwoofers are deployed, cardioid control technology allows the output to be directed to the audience, reducing noise on the stage by up to 35 dB.

The highly efficient 3600 W Class D power amplifier utilizes a high-sensitivity transducer to deliver up to 142 dB peak SPL on the RM28PD.

Intelligent thermal management uses a variable speed fan controlled by multiple onboard sensors to ensure excellent performance and reliability in demanding environmental conditions.

Two XLR connectors make it easy to expand the system to additional speakers or subwoofers. Large slot ports enable low distortion and excellent bass extension. 
 

Parameter
System Type:                      Dual 18-inch, active, low-frequency reflex
Frequency Range：           30Hz-250Hz
Maximum SPL2：              142dB 
LF Driver：                         2 x 15" woofers 
Amplifier Type:                    Class D 
power output：                   3600W
Cooling method：               Fan cooling
working voltage：               110V50Hz (customizable) 230V 60Hz
Box material：                    18mm birch plywood
Box appearance：              Black wear-resistant paint treatment
Dimensions:                       (H×W×D）518×1325×710
Packing Specifications:       598×1400×790mm
Net Weight：                       87kg
packing weight:                   91Kg