Reinforce your lows with the full power of the Mackie Thump 18Sv4

The Mackie Thump 18Sv4 is a 1400 W active 18-inch Bass Reflex subwoofer designed to extend the low-frequency response of PA systems used by DJs, musicians, bands, and sound reinforcement companies. Its 18" woofer reaches up to 132 dB Peak and extends the response down to 28 Hz, providing depth and sound pressure for music and events. The built-in DSP, variable crossover, and Thump-specific modes make it easy to integrate into different configurations, whether using a single unit or working with a pair of subwoofers.

Key features of the Mackie Thump 18Sv4

18" woofer with 1400 W Class D amplification

Maximum SPL of 132 dB Peak and response from 28 Hz

DSP with specific modes for Thump 12v4, 15v4, and Thump Go

Variable crossover and gain control with polarity reversal

XLR inputs and outputs for stereo or mono configurations

What makes the Mackie Thump 18Sv4 special?

High-pressure lows with DSP designed to integrate easily into Mackie Thump systems. The Mackie Thump 18Sv4 combines power, processing, and flexibility to make it easy to reinforce low frequencies in PA systems. Its high-pass and delay modes are ready to work with Thump 12v4, Thump 15v4, and Thump Go, while also offering variable adjustment for other configurations. The variable crossover, polarity reversal, and gain control allow for more precise adjustments, while stereo or mono summing simplifies both single-subwoofer setups and two-unit systems.