Skip to main content

Mackie Thump TH-18s Powered Subwoofer

Item #: 
  • Write a Review

The Mackie TH-18s powered subwoofer speaker delivers powerful, chest-thumping lows that instantly bring massive Thump to any Mackie PA system. Designed by the same team that produced the SRM450v2, the... Click To Read More About This Product

We're sorry—we no longer carry this item.

Find a similar product below or contact us for a recommendation of a great alternative.

Call: 866-498-7882 Email or Chat

Recommended Products

The Mackie TH-18s powered subwoofer speaker delivers powerful, chest-thumping lows that instantly bring massive Thump to any Mackie PA system. Designed by the same team that produced the SRM450v2, the TH-18s has a ported bass reflex design that produces tight low end. And the lightweight, ultra-efficient Class-D Fast Recovery power amplifier delivers 1000W peak power with less risk of thermal overload. This makes the Mackie subwoofer extremely lightweight and portable, without compromising the power and performance that you need”at a price point that doesn't kill your budget.

Shake, Shake, Shake The Room
What does 1000W of peak power mean to you? It means having a subwoofer that delivers rump-shaking bass night after night. It means getting class-leading power and output. To accomplish this, the TH-18s features Class-D Fast Recovery amplification. Class-D amps are more efficient and lightweight, with far less waste heat produced. Fast Recovery means you can occasionally push into clipping without a ton of nasty distortion.

The TH-18s' sound benefits from built-in Mackie Active electronics, like a precision crossover and tuning filters for accurate bass response. This helps the Mackie subwoofer deliver professional low end that you can feel, custom tuned to be tight and punchy.

System Friendly
Paired with a Mackie TH-15A, you have a complete (and completely affordable) plug-and-play system that is ideal for small clubs, DJs, or rehearsal spaces. The Thump subwoofer speaker is also a great match for the popular Mackie SRMv2 Series and can easily integrate into nearly any existing PA setup you may have. The TH-18 speaker has both full-range and high-pass stereo outputs for connection to full-range top boxes. Just dial in the appropriate level and use the polarity switch to make sure the sub is in phase with the top boxes. The integrated pole-cup can accommodate a standard mounting pole, so your favorite speaker has a nice place to sit. If you prefer you can also stack your full-range box right on top of this sturdy Mackie speaker.

Value Loaded
The Mackie TH-18 subwoofer gives you what you need without decimating your budget. For its price range, the TH-18 powered subwoofer offers an exceptional amount of power, has a high-output 18" woofer that can be felt from across the room, incorporates features that make it lighter and more portable, and it's made with rigid plywood (not fiberboard) to handle the rigors of the road.


1000W of ultra-efficient Class-D Fast Recovery amplification
Mackie Active electronics provide total system optimization
Precision crossover (125Hz)
Tuning filters for accurate bass response
18-inch woofer delivers superior output and low-frequency extension (aka Thump)
Dual XLR inputs for mono or stereo applications
Stereo high-pass and full range outputs
User-adjustable level and polarity controls
Individual power, signal, OL, and thermal protect indicators
Pole receptacle for mounting full-range loudspeakers
Solid plywood enclosure with high-durability, textured black paint
Extremely lightweight and portable
Acoustic Performance
Frequency Range (”10dB): 35Hz - 125Hz
Frequency Response (”3dB): 45Hz - 120Hz
Maximum SPL Long-Term: 122dB SPL @ 1m
Maximum SPL Peak: 125dB SPL @ 1m

Input Type: Female XLR, Balanced differential (stereo left/right)
Input Impedance: 50 kOhms balanced bridging
Loop-through: Male XLR Bal/Unbalanced (parallel with input)
High Pass: Male XLR Bal/Unbalanced
Level Control: Rotating knob, ”Inf to15dB
Sensitivity: ”1dBu for full output (Level Control @ Center), ”11dBu for full output (Level Control @ Max)

Low Frequency:
Diameter: 18"/457mm
Voice coil dia: 4"/102mm

Power Amplifiers
Low Frequency Power Amplifier
Rated Power: 500 watts continuous, 1010 watts peak
THD: < 0.1%
Cooling: Passive
Design: Class D

Electronic Crossover
Crossover type: 24dB/octave
Crossover Frequency: 120Hz

Protection Features
Input Protection
Thermal Protection
DC Protection

AC Power Requirements
US: 120 VAC, 50”60Hz
Europe: 240 VAC, 50”60Hz

Construction Features
Basic Design: Trapezoidal
Material: MDF and particle board
Finish: Textured
Handles: One on each side
Grille: Perforated metal with weather-resistant coating
Display LEDs
Rear: Power ON, OL (overload)

20.2"W x 24.1"H x 25.3"D, / 51.3cm x 61.2cm x 64.3cm
Weight: 88.2lb./40 kg
  • Customer Reviews

Review Snapshot

by PowerReviews
MackieThump TH-18s Powered Subwoofer

(based on 2 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 2 customers

Displaying reviews 1-2

Back to Top

(8 of 10 customers found this review helpful)


Great Subwoofer

By Will

from Oklahoma City, OK

Comments about Mackie Thump TH-18s Powered Subwoofer:

This Mackie subwoofer further shows off the great quality you get from Mackie. This subwoofer is a small yet very powerful and loud subwoofer. I am very pleased with the speaker.

(4 of 4 customers found this review helpful)


Mackie Thump TH-18 Powered Subwoofer

By Troy Gomillion

from Midland, MI

Comments about Mackie Thump TH-18s Powered Subwoofer:

The Mackie Thump Subwoofer's bass is amazing. The sound quality of the lows and thump is great.

Displaying reviews 1-2

Back to Top

You are changing the Ship-To country.

Our product catalog varies by country due to manufacturer restrictions. If you change the Ship-To country, some or all of the items in your cart may not ship to the new destination.