Add bass people can feel on the dance floor. The Mackie Thump18Sv4 is an 18-inch, 1400W professional powered subwoofer. Connect your loudspeakers to its high-pass outputs, pick a mode, and it sets the crossover and alignment for you – so your tops and sub work together from the first song.
Why customers choose it
Who it is for
DJs and party organisers, live bands, wedding and event companies, clubs and venues – anyone pairing it with Thump12v4, Thump15v4, Thump GO or other powered speakers.
Specifications
| Type | Powered subwoofer |
|---|---|
| Woofer | 18-inch (457 mm) |
| Amplifier | 1400W peak (470W RMS), class D |
| Frequency response (-3 dB) | 33 Hz – 160 Hz |
| Frequency response (-10 dB) | 28 Hz – 160 Hz |
| Max SPL | 132 dB peak |
| Inputs | 2 x XLR balanced (stereo) |
| Outputs | 2 x XLR high-pass + 2 x XLR full-range |
| High-pass modes | Thump 12 (140 Hz), Thump 15 (110 Hz), Thump GO (150 Hz), Variable |
| Controls | Level (muted to +6 dB), phase invert, stereo/mono, front LED on/off |
| Power supply | 100-240V, 50-60 Hz, 400W |
| Mounting | Floor/stage; M20 thread for SPM400 pole (top speaker) |
| Size (H x W x D) | 541 x 630 x 605 mm |
| Weight | 31.9 kg |
| Crossover | Preset modes + variable |
| Colour | Black |
Good to know
- Mackie says Thumpv4 subwoofers are made to sit on the floor or stage – do not fly or hang them.
- The SPM400 pole is sold separately.
- Pairs naturally with Thump12v4 and Thump15v4 speakers – just pick the matching mode.
FAQ
Will it work with non-Mackie speakers?
Yes. Use Variable mode to set the crossover manually for any loudspeaker.
Can I use two subwoofers?
Yes. Chain them with the full-range XLR outputs and use stereo or mono summing.
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