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DJ Tech Reviews

Mackie Thump18Sv4

Mackie's new 1,400 W 18-inch sub for the Thumpv4 range; too new for reviews, and its 28 Hz claim is disputed.

Mackie Thump18Sv4 at an angle

Photos: Mackie / LOUD Audio

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Only 1 professional review so far, none recommending it
Best for
Thump12v4, Thump15v4 or Thump GO owners who want a matched sub.
Skip it if
You want proven output figures, or a sub with rigging points.

The Internet’s Opinion

From 1 professional review and 3 owner reviews: not much evidence yet.

Too new to call: the one professional review of the Thumpv4 series rates it as solid, well-priced entry-level gear but disputes Mackie's low-frequency claims, and three Thomann owners praise deep, simple bass.

0 recommend1 mixed0 avoid

What people praise

  • Deep bass that is simple to set up and made an obvious difference to an existing rig
See the 1 reviews behind this

1 professional review (1 mixed); 3 owner reviews read at Thomann, none at Guitar CenterCompiled 2026-10-15How this is compiled

Video reviews

  • Nick SpinelliApr 2026Mixed

    The TRUTH about the Mackie Thump V4 Speakers

Plays from YouTube when you press play. Picked from the reviews counted above, including one that disagrees where there is one.

Prices

Before you buy

Released
April 2026
Status
Current

Works with

  • Thump12v4 and Thump15v4Matched high-pass modes

    Thump 12 mode sets a 140 Hz crossover and Thump 15 a 110 Hz crossover, each with 1.4 ms of alignment delay for the loudspeaker's latency Manufacturer spec sheet (Mackie (owner's manual)), checked 2026-10-15

  • Thump GO150 Hz mode

    Thump GO mode sets a 150 Hz crossover with 1.4 ms of alignment delay for Mackie's battery-powered loudspeaker Manufacturer spec sheet (Mackie (owner's manual)), checked 2026-10-15

  • Any other PA speakerVariable 80 to 160 Hz

    Variable mode lets you set the crossover yourself between 80 Hz and 160 Hz when the tops are not Mackie's Manufacturer spec sheet (Mackie (owner's manual)), checked 2026-10-15

  • More subwoofersFull-range XLR outs

    Stereo or mono full-range outputs pass the unaltered signal to a second subwoofer, side fills or an amplifier Manufacturer spec sheet (Mackie (owner's manual)), checked 2026-10-15

  • A DJ controller or mixerStereo XLR inputs

    Two balanced XLR inputs take the stereo feed from a controller, mixer or other source; never connect an amplifier output to them Manufacturer spec sheet (Mackie), checked 2026-10-15

You’ll also need

  • SPM400 speaker poleSold separately

    The M20 thread takes Mackie's SPM400 pole to stack a Thump top above the subwoofer; the pole is sold separately Manufacturer spec sheet (Mackie), checked 2026-10-15

  • XLR cablesNot in the box

    The manual lists a detachable power cord in the packaging; the XLR cables for the inputs and the tops are separate Manufacturer spec sheet (Mackie (owner's manual)), checked 2026-10-15

  • Floor or stage spaceNo rigging

    Mackie says the Thumpv4 subwoofers sit on the floor or stage, have no rigging points and must never be suspended by their handles Manufacturer spec sheet (Mackie (spec sheet)), checked 2026-10-15

  • Thump18Sv4 slip coverSold separately

    A fitted slip cover (part 2061166) is an option, not included Manufacturer spec sheet (Mackie (spec sheet)), checked 2026-10-15

Key specs

Configuration
18-inch powered subwoofer
Woofer size
18 in
Woofer
18 in / 457 mm high-performance woofer
Amplifier
1,400 W peak, 470 W RMS, Class D, convection cooled; THD under 1 %
Maximum SPL
132 dB peak
Low-frequency extension
28 Hz (-10 dB); 33 Hz (-3 dB)
All 15 specifications
Frequency response
33 Hz – 160 Hz (-3 dB); 28 Hz – 160 Hz (-10 dB)
Inputs
2 x female XLR, balanced (stereo), 10 kΩ
Weight
31.9 kg (70.4 lb)
Outputs
2 x male XLR high-pass for loudspeakers; 2 x male XLR full-range, stereo or mono, for chaining more subwoofers
High-pass modes
Thump 12 (140 Hz), Thump 15 (110 Hz), Thump GO (150 Hz) or Variable 80–160 Hz, each with 1.4 ms alignment delay
Controls
Level (off to +6 dB), polarity normal/invert, stereo/mono full-range output, front LED on/off; peak and RMS limiting with thermal protection
Mounting
Floor or stage only, no rigging points; M20 thread for the SPM400 speaker pole (sold separately); built-in carry handles
Power
100–240 V AC, 50–60 Hz, 400 W; 3-pin IEC connector with detachable line cord
Dimensions (H x W x D)
541 x 630 x 605 mm (21.3 x 24.8 x 23.8 in)

15 of 15 figures sourced; hover one for its source

Our take

Rory TassellWritten from the sources on this page, not from a loan unit.

The Thump18Sv4 is too new to call. The one professional review, Nick Spinelli's video on the Thumpv4 series, rates the range as solid, well-priced entry-level gear but calls Mackie's low-frequency claims lies, naming the 18-inch sub's figure; three Thomann owners praise deep bass that is simple to set up. Mackie's own sheet gives 1,400 W peak, 132 dB and high-pass modes for its Thump tops. Buy it to match Thumpv4 tops, and wait for tests before trusting the Hz figures.

What it is

Status, October 2026: current. Mackie lists the Thump18Sv4 in its Thumpv4 Series, and its own shop shows it on backorder.

What it is

The Thump18Sv4 is an 18-inch powered subwoofer from Mackie, announced on 28 April 2026 with the Thumpv4 Series of Thump12v4 and Thump15v4 loudspeakers and the smaller Thump15Sv4 subwoofer, with the subwoofers shipping from May 2026 (Mackie press release). It is the larger of the two new subs and sits above the Thump118S from the 2022 Thump Series, which Mackie still lists, and apart from the battery-powered ThumpSub GO; the three are different products, not revisions of one another.

Mackie says it combines a 1,400 W Class-D amplifier with an 18-inch woofer for 132 dB maximum SPL and 33 Hz low-frequency performance (Mackie product page); its spec sheet gives 33 Hz at -3 dB and 28 Hz at -10 dB, and 470 W RMS. The rear panel has stereo XLR inputs, stereo XLR high-pass outputs for the tops and stereo XLR full-range outputs for chaining more subwoofers, a level control, a polarity switch, stereo or mono summing and a defeatable front LED. Four high-pass modes tailor the output to Mackie's own tops: Thump 12 at 140 Hz, Thump 15 at 110 Hz, Thump GO at 150 Hz, or a variable 80 to 160 Hz for other speakers, each adding 1.4 ms of alignment delay (owner's manual).

It measures 541 x 630 x 605 mm, weighs 31.9 kg and has built-in carry handles and an M20 thread for the SPM400 pole, sold separately; Mackie says it is for floor or stage use only, with no rigging points. It draws up to 400 W from 100 to 240 V, and the box holds the subwoofer and a detachable power cord. The 15-inch Thump15Sv4 shares the amplifier and features with a 15-inch woofer, 29 Hz at -10 dB and 26 kg.

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