Mackie Thump 15Sv4
Active Bass Reflex Subwoofer
- Equipped with: 15" woofer
- Power: 1400 Watt Class-D
- Maximum level: 132 dB
- Frequency range: 27 - 160 Hz (-10 dB)
- Integrated DSP with: High-pass modes (Thump 12, Thump 15, Thump Go, variable)
- Polarity reversal switch
- Front LED on/off
- Variable gain control
- Stereo or mono sum for use with one or two subwoofers
- Inputs: 2x XLR
- Output: 2x XLR Thru, 2x XLR Mix-Out
- Road-ready construction
- Integrated M20 flange
- Dimensions (W x D x H): 561 x 584 x 470 mm
- Weight: 26 kg
- Colour: Black
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Available since April 2026
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Item number 636109
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Sales Unit 1 piece(s)
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Power (Manufacturers Specs) 1400 W
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Number of Bass Woofers 1
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Bass Woofer in Inch 15"
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Colour Black
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Width 561 mm
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Height 470 mm
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Depth 584 mm
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Weight 26 kg
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Wheels No
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Stand Flange M20
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Multi Channel Power Amp No
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Remote Control No
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Sound Pressure in dB 132 dB
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Housing Material Wood
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Construction Bass reflex
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Dsp Yes
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Input Connector XLR
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Output Connector XLR
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X-Over Connector XLR
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High Cut Adjustable
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Frequency Range (-10dB) from 29 Hz
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Frequency Range (-10dB) to 160 Hz
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Extend the low end
Adding a subwoofer to a PA system isn't just about more bass – it allows the top speakers to focus on mids and highs without working unnecessarily hard at the low end. The Mackie Thump15Sv4 takes over exactly that workload, combining a 1400W Class D amplifier with a 15" woofer to add substantial low-end weight and impact while extending response down to 29Hz (-10dB) at output levels reaching 132dB SPL. Part of the wider Thump v4 ecosystem, it integrates easily with both Mackie speakers and full-range systems from other manufacturers. The enclosure features sturdy handles and an M20 pole mount for the Mackie SPM400 speaker pole (sold separately), allowing a full-range top to be mounted directly above for a compact, self-contained PA column. At 26kg, it balances serious output with a manageable form factor.
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Quick to integrate…
Feeding the signal into the Thump 15Sv4's two stereo XLR inputs and routing the high-pass output to the tops is all that's needed to get the system running. Four selectable high-pass modes cover the most common Thump v4 pairings – Thump12 (140Hz crossover), Thump15 (110Hz), and Thump Go (150Hz) – with Variable mode allowing the crossover point to be set freely for other systems. Phase can be inverted at the touch of a button, and a variable level control runs from muted to +6dB for precise output matching. Stereo and mono summing modes support both single and dual subwoofer configurations, and the full-range XLR outputs allow additional subwoofers to be chained for larger systems. The front LED can be switched off for discreet installations.
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...clean and separate
Getting subwoofer and tops to work as a single coherent system rather than two separate sources comes down largely to timing. All four high-pass modes include 1.4ms alignment delay, compensating for the physical distance between drivers and ensuring the low-end arrives in step with the mid and high frequencies – particularly when speaker placement is dictated by the room rather than ideal positioning. Combined with switchable phase, the system adapts quickly to different placements and changing acoustic conditions, whether the subwoofer is positioned centrally beneath the tops or offset to one side of the stage. The Variable crossover mode extends compatibility beyond the Thump v4 series, making the 15Sv4 a practical addition to mixed systems built around other full-range tops.
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About Mackie
In 1988 Greg Mackie, already a successful co-founder of a pro audio company, founded Mackie Designs Inc. with the goal of producing affordable, high-quality mixers. The company's first official product, the LM-1602 line mixer, was initially produced within the four walls of his home. As sales figures were encouraging, its successor model CR-1604 soon followed - and in 1991 the company finally moved into its first proper production facility. The combination of reliable quality and low prices quickly brought the company enormous success, so that by 1995 Mackie had already sold 100,000 products. In 2003, the company was renamed LOUD Audio, LLC so that there is no longer any confusion between the Mackie brand and its former parent company of the same name.
Low end for any setup
The Thump15Sv4 is the natural addition for DJs, live bands, and venues who want to add serious low-end weight to an existing PA – as a partner for Thump12v4 or Thump15v4 tops, the anchor of a mobile DJ rig, or the foundation of a fixed installation. The robust composite enclosure is designed for regular transport or touring use, with integrated handles for easier loading and unloading, and is equally suited to permanent installations. One or more units can be combined via the full-range outputs, increasing overall low-end output for larger events and higher-volume applications. A single unit can serve as a stable pole-mount base for a compact sub/top column. For larger events demanding more output and deeper low-end extension, the Thump18Sv4 sits above it as the flagship subwoofer in the series.