Overview:

SRM 18” Powered subwoofers are “Built-like-a tank” delivering 1600W  of intense power in an  ultra-high output design that can shake the room. The professional-grade, internally-braced all-wood enclosure provides tour level road-worthiness with maximum low-frequency extension and pouch

SRM subwoofers feature stereo XLR inputs, full range and high-pass outputs plus a variable digital crossover that includes presets for SRM top boxes

The Smart protect DSP is also in place to protect your investment when things get pushed a little too hard. Get the high-output, air-moving lows you demand in a rock solid subwoofer with our proven performance

Features:

• 1600W of intense power paired with custom high-output  18" woofers for room shaking, chest-pounding low end performance
• Built-Like-A-Tank all-wood, internally-braced cabinet delivers professional-grade road-worthiness and near-zero distortion even at high volume
• Front ported for maximum low-frequency extension and punch
• Stereo XLR inputs plus stereo XLR full-range and high-pass outputs
• Integrated digital crossover with variable control and presets for Mackie SRM loudspeakers
• Smart Protect DSP kicks in to protect your investment when things get pushed a little too hard
• Built-in cup for easily pole-mounting full-range loudspeakers

1.) Power Connection - This is a standard 3-prong IEC power connector

2.) Power Switch - Press the top of this rocker switch inwards to turn on the subwoofer

3.) XLR Inputs - Balanced XLR female connectors are provided for the left and right inputs

4.) Normal/ Invert Switch (Polarity) - This switch reverses the polarity of the signal going into the subwoofer amplifier by 180°

5.) Gain Knob & Sig / Lim LED - The gain knob adjusts the input sensitivity of the mic inputs

6.) High Pass Outputs - Typically , full range loudspeakers are connected to the high pass outputs to "split" the work with the subwoofer.

7.) Full Range Outputs - Connect the full range outputs to the inputs of another powered subwoofer,powered loudspeakers or to an amplifier powering passive loudspeakers.

8.) Stereo / Mono switch (Full range) - This switch allows you to choose whether the A and B inputs are sent out separately (switch out) or as a mono sum of both inputs (switch in)

9.) High Pass Mode - The high pass mode allows you to choose from a list of presets for SRM loudspeakers

10.) Main Logo Switch - The running man logo on the front of the subwoofer illuminates when this switch is disengaged and AC power is available at the mains input.

Dimension:

Mackie SRM1850 Powered PA Subwoofer Specifications

Acoustic Performance

• Frequency Response (-3db): ...........40 Hz-120 Hz
• Frequency Response (-10db): .............35 Hz-150Hz
• Max Peak SPL:........................... 132 db
• Crossover Point: ............................60Hz-120Hz variable

Transducer

• Woofer Diameter: ...............18 inches
• Voice Coil Diameter: .........3.0 inches
• Sub Diaphragm Material:......... Paper
• Magnet Material:...................... Ferrite

Power Amplifier

• Rated Power:............. 800 watts RMS, 1600 watts peak
• Rated THD: ...........<1 percent
• Cooling: ................Convection
• Design: ...................Class D

Input/Output

• Input Type:.................. Female XLR balanced
• Full Range Outputs: .........Male XLR balanced
• High Pass Outputs: ...........Male XLR balanced

• Dimensions (HxWxD): .....22.5 in (H)  X 22.2 in(W) X 23.9 in (D)
• Weight: ............................ 64 lb / 29 kg