The Mackie SR18S is a high-output, professional powered subwoofer well suited for mobile entertainment, AV rental, event production, clubs, and performance venues. The subwoofer features the latest acoustic processing technology, powerful amplification, and versatile configurations to deliver remarkable sound and reliability.

The 18" direct-radiating driver is powered by a 1600W Class-D amplifier, which delivers high sound pressure levels with dynamic and musical sound reproduction of very-low frequencies. The rear panel features a pair of balanced XLR inputs, a pair of full-range XLR outputs, and a pair of high-pass XLR outputs. Additionally, the custom voicings and variable crossover make optimization for your system simple and easy.

The "built-like-a-tank" construction features a rugged wood cabinet and tough steel grille that is built to last. A great complement to the SRT Series, SRM | V-Class Series or any PA, the SR18S not only adds powerful low end, but allows for a massive increase in efficiency and output for your whole system.

For Live Stage, Theater, DJ Setups    Custom 18" Woofer    Custom Voice Presets (Flat, Deep, Punch)    1600W Class-D Amplifier    Variable Crossover Frequency    Polarity Invert Switch    Transparent System Limiting & Protection    Stereo XLR Inputs + Full-Range Outputs    Stereo High-Pass XLR Outputs    Integrated Pole Cup

• 1600W Class-D amplifier is designed for ultrareliable, 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: 33 to 200 Hz
• Max SPL: 133 dB

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

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

• 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 (100-240 VAC) with power factor correction for stable operation even with unstable AC power

• Stereo XLR inputs
• Stereo full-range XLR outputs
• Stereo high-pass XLR outputs
• Integrated pole cup

Related Questions and Answers

Q: 1. What would under powering be considered with this speaker?

A: You can't underpower the Mackie SRM450 - 1000W. It is a powered speaker.

Q: 2. Is this compatable with a wireless mic?

A: Yes, you can use a wireless microphone system with the Mackie Thrash212 GO 12" 300W Powered PA Loudspeaker System.

Q: 3. What is the height of this product?

A: The ringlight is 6". The selfie stick is not specified.

Q: 4. How long does the built in battery last

A: The manufacture does not list how long the Mackie Battery-Powered Ring Light Kit with Convertible Selfie Stick (6") lasts on a full battery at full brightness,.

Q: 5. Does this fit the Alto TS315?

A: No, the Alto TX215 and TS315 are different sizes. The dimensions for the height, width and depth of the TX215 are 24.7 x 15.2 x 14.6" (627 x 386 x 371mm) while the dimensions for the height, width and depth of the TS315 are 25.7 x 16.6 x 15.4” (652 x 421 x 392mm).

Q: 6. How much beating can this speaker take from the weather?

A: These are really stout speakers but as you can imagine. The woofer is still made of paper. We use them outside all the time including in freezing weather. But cover with a garbage bag when it rains.

Q: 7. If I had two speakers, can they connect wireless to one another or do I still need to daisy chain them with an XLR cable?

A: The Mackie SRT series speakers, including this SRT 212 model support stereo bluetooth pairing. Please see pages 16-17 of the manual here for more details: https://bhpho.to/36kpm88

Q: 8. With the volume set at nominal level, does the monitor pop when the power is turned on or off?

A: I have not had any hum or pop turning it on or off. I also use balanced, shielded cables when recording in the field. This monitor has worked quite well for me :)

Q: 9. Are the green handles removable?

A: The green handles on the Mackie Thrash212 GO are not removable.

Q: 10. On this speaker can I send both channels to it with single to duel rca adapters?

A: If you use the RCA inputs you will hear both sides. The signal will be summed to a mono-signal.