The Thump18Sv4 18" professional powered subwoofer is built to deliver powerful, extended low-frequency performance for DJs, musicians, and live sound professionals. Powered by a 1400W Class-D amplifier, it produces up to 132 dB SPL, with deep, impactful bass that reaches down to 25 Hz. Designed as a true workhorse, it provides reliable, high-output performance for demanding gigs and large venues.
Engineered for seamless system integration, the Thump18Sv4 includes selectable high-pass modes optimized for Mackie Thump loudspeakers, including Thump12v4, Thump15v4, and Thump GO systems. A variable crossover mode allows precise tuning with virtually any PA speakers, while built-in alignment delay ensures cohesive system performance. Stereo XLR inputs and outputs provide flexible connectivity, including high-pass outputs for main speakers and full-range outputs for daisy-chaining additional subwoofers.
Constructed for durability and portability, the Thump18Sv4 features a rugged enclosure with built-in handles for easy transport. Additional features such as phase invert, variable level control, stereo or mono summing, and a defeatable front LED offer greater control in different setups. An M20 threaded pole mount enables secure speaker pole installation, making this subwoofer a powerful and versatile foundation for professional sound systems.
| Frequency Response | -10 dB: 25 Hz - 160 kHz -3 dB: 33 Hz - 160 kHz |
|---|---|
| Maximum SPL Peak | 132 dB |
| Low Frequency | 18" (457 mm) woofer |
| Power Amplifiers | System Power: 1400 watts peak Low Frequency Power: 1400 watts peak |
| Input Type | 2x Female XLR Balanced |
| Line Impedance | 10 kΩ Balanced |
| Output | Male XLR Balanced (2x Full Range, 2x High Pass) |
| Full Range Output | Stereo/Mono |
| Phase | Normal/Invert |
| Output Impedance | 150Ω |
| AC Connector | 3-pin IEC 250, VAC, 10A male |
| Dimensions (H x W x D) | 21.3" (541 mm) x 24.8" (630 mm) x 23.8" (605 mm) |
| Weight | 70.4 lbs (31.9 kg) |
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
