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Mackie SRM1850 Active 18" Powered Subwoofer 1600 Watts Amplified DJ Sub

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Mackie SRM1850 H.R
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Product Description

Mackie SRM1850 1600W of power paired with a 18" woofer for high low-end performance
  • The Mackie SRM1850 1600W 18" Powered Subwoofer is for extending the low-frequencies in a sound system.

  • It is used in various environments for sound reinforcement applications such as portable DJ's, live stage, houses of worship, theater, rehearsals and more. It features 1600W of power and has an 18" subwoofer.

  • The subwoofer is enclosed in a front ported internally-braced all-wooden cabinet and delivers maximum low-frequency extension and punch. It is built to provide tour level road-worthiness

  • The SRM1850 subwoofer features stereo XLR inputs, full-range and high-pass outputs, and a variable digital crossover that includes presets for the SRM550 and SRM650 loudspeakers (sold separately).

  • It features a Smart Protect DSP that protects the subwoofer from overloads if things get pushed a little too hard. The driver has its own compression circuit which helps protect it from damaging transient peaks.

  • This compressor is designed to be transparent and is not noticeable under normal operating conditions. An AC power cord is included.

Note: The SRM1850 18" powered subwoofer is designed to sit on the floor or stage. It is not designed to be pole-mounted or suspended. The cabinet has no rigging points and is not suitable for rigging. Never attempt to suspend the subwoofer by its handles.

  • 1600W of power paired with a 18" woofer for high low-end performance

  • All-wood construction with internally-braced cabinet for near-zero distortion

  • Front ported for maximum low-frequency extension and punch

  • Stereo XLR inputs and stereo XLR full-range and high-pass outputs

  • Integrated digital crossover with variable control and presets for the SRM550 and SRM650 Loudspeakers (sold separately)

  • Smart Protect DSP for protection

  • Built-in cup for easily pole-mounting full-range loudspeakers

Mackie SRM1850 Specs

 AcousticFrequency Response: 

  • 40 Hz to 120 Hz (-3 dB) 

  • 35 Hz to 150 Hz (-10 dB)

  • Maximum Peak SPL: 132 dB

  • Variable 60 Hz to 120 Hz

  • Slope: 3rd order HP, 4th order LP


  • Woofer Diameter: 18" (457 mm) 

  • Voice Coil Diameter: 3" (76 mm) 


  • Subwoofer Diaphragm: Paper

  • Magnet: Ferrite


  • Rated Power: 

  • 800 W RMS

  • 1600 W peak

  • Rated THD: <1%

  • Cooling: Convection

  • Design: Class D

Input / Output Connectors

  • Input Type: Female XLR balanced differential (stereo left / right) 

  • Input Impedance: 20 kOhms balanced, 10 kOhms unbalanced

  • Full Range Outputs: Male XLR balanced (parallel with inputs; mono) 

  • High Pass Outputs: Male XLR balanced

PowerLine Input:

  • US Detachable Line Cord: 100 to 120 VAC, 60 Hz, 200 W

  • AC Connector: 3-pin IEC 250 VAC

  • Power Supply Type: Switch mode

  • LEDsDefeatable front power on (displays running man logo) 

  • Front load power limiter

  • High-pass mode, input signal

  • SafetyInput Protection: Peak and RMS limiting, power supply and amplifier thermal protection


  • Cabinet: 0.7" (18.0 mm) Poplar plywood

  • Finish: High durability black paint

  • Handles: One on each side

  • Grille: Powder-coated 16 gauge steel

  • Operating Temperature32 to 104°F (0 to 40°C)

  • Dimensions (H x W x D)22.5 x 22.2 x 23.9" (572.0 x 565.0 x 608.0 mm)

  • Weight64 lb (29 kg)

  • Package Weight83.0 lb

  • Box Dimensions (LxWxH)29.0 x 27.5 x 25.0"