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SR18S

18" 1600W Professional Powered Subwoofer

SR18S

SRT Series Professional Powered Loudspeakers are designed for real-world performance. The latest acoustic processing technology, powerful amplifiers, and ultra-versatile SRT Mix Control + SRT Connect app means easy setup, incredible sound, and unbeatable reliability.

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NO MORE EXCUSES A LOUDSPEAKER UPGRADE THAT MAKES SENSE

NO MORE EXCUSES A LOUDSPEAKER UPGRADE THAT MAKES SENSE

If you've been debating an upgrade to your sound system, the time has come to ditch those dusty old speakers from the 80's. With the SRT Series, experiencing incredible sound, cutting-edge performance, and reliability is a no-brainer.

  • The ultimate workhorse loudspeaker
  • Industry-leading 1600W Class-D amplifier with transparent system limiting and protection
  • Superior sound with Advanced Impulse™ DSP tuning

Product features

  • 1600W Class-D Amplifier
  • Advanced Impulse™ DSP - Proprietary Acoustic Tuning
  • Application Based Voicing Modes
  • Transparent System Protection and Monitoring

Product Videos & Tutorials

ADVANCED IMPULSE™ DSP MODULE

What does it do for me?

Mackie’s filtering technology is not your typical speaker processing. The goal of our Advanced Impulse™ DSP is to remove all the anomalies that loudspeakers and horns contribute to a signal, from “honkiness” or “squelch” to "mushy" low end, effectively making the drivers "invisible" and output nothing but perfect, clean sound. By more intelligently (and more thoroughly) employing the benefits of FIR filtering, Advanced Impulse DSP eliminates undesired acoustic anomalies across the entire dispersion zone (horizontal and vertical), as well as frequency range and time domain.Mackie Advanced Impulse DSP

How it's done

The main way this is accomplished is by measuring the negative frequency response and time domain impacts that each transducer and horn in the system introduces – on axis as well as off – and reversing/correcting for those anomalies before the signal hits the speaker. The result is the output from the speaker is fully corrected for flat, clear, time-aligned, and smooth sound throughout the entire time, space, and response domains. Want to learn more? Check out the full rundown from a Mackie Acoustic Engineer!

SRM V-Class, SRT - Transparent system protection

TRANSPARENT SYSTEM PROTECTION

Other loudspeakers feature some sort of protection and limiting to help them squeeze a dB or two out of the speaker. This is almost always at the expense of sound quality and is commonly experienced as diminished bass response and the "pumping" sound of the internal limiter having a bad day.

When operating at very high levels (ears beware), the processor-controlled system monitoring analyzes the audio signal and identifies the problem areas, then dynamically applies multi-band compression to those specific frequencies rather than lowering the overall output. This keeps your levels where you want them and maintains the sound quality you expect.

Full features

A True Workhorse for Gigging Professionals

  • 1600W Class-D amplifier is designed for ultra-reliable, consistent performance
  • Custom high-efficiency transducer ensures maximum punch
  • Increases efficiency of your full-range loudspeakers by taking care of the low end for the entire system
  • Built-Like-A-Tank™ to conquer every gig while lightweight for easy loading
  • Frequency response: 33Hz - 200Hz
  • Max SPL: 133 dB

Custom Voicing Presets

  • Flat – Natural balance between deep bass and overall output
  • Deep – Emphasizes ultra-low frequencies. Great for dance, rap, and electronic music
  • Punch – Prioritizes highest possible output level. Great for bands and rock music

Optimize for Your System

  • Variable crossover frequency
  • Polarity invert switch
  • Defeatable front LED
  • Stereo or mono-summing for single or dual subwoofer deployment
  • Variable level control (-6dBU to +6dBU)

Transparent System Limiting and Protection

  • Dedicated processing module monitors and protects the amplifier in real time
  • Sound quality and tonal balance is maintained even under heavy limiting
  • Input limiting keeps your source signal in check so if you’re sending audio that’s a bit too hot, the speaker will cool it down
  • Universal Power Supply (100-240VAC) with Power Factor Correction for stable operation even with unstable AC power

Versatile I/O

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

Versatile configuration options

  • Integrated M20 threaded pole cup
  • Weight: 74.5 lb / 33.8 kg
  • Dimensions: 23.3 x 23.0 x 27.0 in / 592 x 584 x 686 mm

Product comparison

 
Product
Power
LF Driver
HF Driver
Inputs
Aux Inputs
Outputs
Frequency Response
Max SPL
App Control
 
 
SRT210
SRT212
SRT215
SR18S
SRT210
SRT212
SRT215
SR18S
1600W
1600W
1600W
1600W
10"
12"
15"
18"
1.4"
1.4"
1.4"
-
Dual XLR/TRS
Dual XLR/TRS
Dual XLR/TRS
Stereo XLR
Stereo 1/8"
Stereo 1/8"
Stereo 1/8"
-
XLR Direct Out per channel + Mix Out
XLR Direct Out per channel + Mix Out
XLR Direct Out per channel + Mix Out
Stereo High-Pass XLR + Stereo Full-Range XLR
47Hz – 20kHz
44Hz – 20kHz
42Hz – 20kHz
33Hz – 200Hz
128 dB
132 dB
133 dB
133 dB
Yes
Yes
Yes
-
$ 579.99
$ 679.99
$ 779.99
$ 999.99