Updated 14 May 2026
| Brand | Mackie |
| Category | Musical Instruments |
| Available at | 1 UK stores |
| 90-day avg | £742.99 |
Mackie
Mackie Thump 18S 18" Active PA Subwoofer
£742.99Fair Price
Cheapest at Gear4music · 1 store
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PRICE HISTORY
Current
£705
Change
+15.7%
Avg
£666
Low
£607
High
£705
Volatility
3.0%
PRODUCT DESCRIPTION
- Professional performance If you want to make an impact the Thump 18S is the ideal choice. Designed to deliver bass with outstanding depth and power this high-output subwoofer is an excellent companion for your full-range loudspeakers. Boasting 1200W of Class-D power and a custom 18 woofer the Thump 18S is capable of delivering a powerful low-end with a maximum SPL of up to 130dB. Perfect for filling your venue with rich defined bass. The Thump 18S also provides you with exceptional flexibility. With dual XLR inputs on the rear panel its easy to hook up two loudspeakers for a 2.1 configuration or just one if you are running multiple sub and full-range loudspeaker stacks. There are also stereo full-range outputs which allow you to connect additional subwoofers to your system with ease whilst stereo high-pass outputs ensure that your mid/high loudspeakers are optimised correctly. Combined with a precision crossover at 140Hz the Thump 18S ensures that no matter what your setup consists of itll sound phenomenal every single night. Solid construction Physically and electronically robust. The Thump 18s has been built to withstand the rigours of the road. With Mackies Built-Like-A-Tank construction you can be sure that your subwoofer is able to meet the needs of even the most demanding situations. A solid all-wood cabinet ensures that your sub is able to endure the punishment of life on the road whilst integrated protection circuitry keeps your system running safely and reliably. Features Professional band-pass design provides maximum output with deep room-filling bass 18 custom high-output woofer combined with cool-running 1200W Class-D amplification Optimised for high-output performance and equipped with a 140Hz precision crossover Robust internal system protection keeps your system running safely Dual XLR inputs for mono or stereo applications Stereo high-pass outputs optimise sound when connecting to mid/high loudspeakers Stereo full-range outputs are ideal for adding more subwoofers User-adjustable level and polarity controls Easy to mount full-range loudspeakers on top via the subs pole cup Rugged all-wooden cabinet with a high-durability finish Phenomenal Built-Like-A-Tank Mackie construction for long-term reliability Specifications Frequency Response: -3dB: 40Hz - 120Hz -10dB: 30Hz - 132Hz Maximum SPL: 130dB Crossover Point: 140Hz Crossover Slope: 2nd order HP 6th order LP Woofer Diameter: 18 / 457mm Voice Coil Diameter: 3 / 76mm Cone Material: Paper Magnet Material: Ferrite Rated Power: 600W (RMS) / 1200W (peak) Rated THD: Less than 1-percent Cooling: Convection Amp Design: Class-D Input Type: Female XLR balanced Input Impedance: 20k Ohms (balanced and unbalanced) Full Range Output: Male XLR balanced High Pass Outputs: Male XLR impedance balanced Input Protection: Peak and RMS limiting Power supply and amplifier thermal protection Display LEDs: Front and rear power ON Rear OL limiter Cabinet: Material: Exterior grade 15mm plywood Finish: Textured black catalyzed polyurethane paint Handles: 1 x each side (2 total) Power: 220-240VAC 50-60Hz 150W AC Connector: 3-pin IEC 250VAC 10A male Dimensions: 672mm x 573mm x 580mm / 26.5 x 22.6 x 22.8 (H x W x D) Weight: 37.2kg / 82lbs