Mackie Thump 18S V4 18" Active PA Subwoofer

The Mackie Thump18S V4 is a high-performance 18-inch active subwoofer designed to deliver powerful, room-filling bass for DJs, live sound engineers, venues and professional PA systems. Combining a 1400W Class-D amplifier with a high-output 18-inch woofer, the Thump18S V4 produces deep, authoritative low frequencies down to 25 Hz and an impressive maximum SPL of 132 dB, making it an ideal solution for music-driven events and demanding sound reinforcement applications.

Built to provide the low-end impact required for modern live sound and DJ performances, the Thump18S V4 delivers extended bass response while maintaining clarity and control. The efficient Class-D amplifier ensures reliable performance and consistent output, even during extended periods of high-volume operation.

For seamless integration with a wide range of speaker systems, the Thump18S V4 features selectable high-pass modes, including dedicated presets designed for Mackie Thump series loudspeakers. A variable crossover mode allows users to fine-tune crossover frequencies to suit specific system requirements and venue acoustics. Built-in alignment delay ensures accurate timing between the subwoofer and full-range speakers for a cohesive and balanced sound.

Flexible connectivity options make setup straightforward. Stereo XLR inputs allow connection to mixers, DJ controllers and other professional audio sources, while stereo high-pass outputs provide a processed signal for connecting top speakers. Full-range outputs allow additional subwoofers to be linked easily, and stereo or mono summing options offer greater flexibility when configuring larger sound systems.

Designed to withstand the demands of regular transport and live use, the rugged enclosure features integrated carry handles for easy handling and positioning. An M20 threaded pole mount enables secure mounting of full-range speakers directly above the subwoofer, creating a clean and professional PA setup.

Additional controls, including variable level adjustment, phase inversion and a defeatable front LED, provide practical flexibility during installation, soundcheck and performance.