Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Magazine reviewers and YouTubers have tried this product—so we've summarized their strongest opinions below.
Product Strengths
- Tight, clear, distortion-free low end is produced
- Best subwoofer ever heard
Product Considerations
- It weighs a lot
Takeaway: The SCM0.1/15 Pro subwoofer delivers amazing low end, adding tight and clear bass to the overall sound. This subwoofer could be the perfect choice to extend the range of monitors.
Compared to their other products
We think it's helpful to understand how this product fits into the brand's full lineup (below). To learn more about these products, visit the brand's page.
SCM7 MK3
- Positioning: The entry-level model in ATC's loudspeaker lineup.
- Description: Features a compact design and precise sound, with a 25mm soft dome tweeter and a 125mm mid-bass driver. Compared to the SCM19, it offers a smaller footprint, making it ideal for small rooms or desktop setups, but it lacks the larger bass driver and higher sensitivity found in the SCM19.
SCM19
- Positioning: A mid-range model in the Entry Series, offering a balance between performance and size.
- Description: Features an "SL" spec bass driver and 75mm integral soft dome, providing excellent phase coherence and bass response. It offers a more robust soundstage than the SCM7 MK3.
SCM19A
- Positioning: An active version of the SCM19, positioned as a higher-end option within the Entry Series.
- Description: Includes an on-board 182-watt Class A/B bi-amplifier, delivering enhanced sound clarity and power. It uses active crossover filters, unlike the passive SCM19, which requires external amplification.
SCM40A
- Positioning: The groundbreaking flagship model of the Entry Series, offering the most advanced features and performance.
- Description: Equipped with a tri-amplifier system and a 164mm bass driver, providing exceptional sound quality and dynamic range. It surpasses the SCM19A with its additional mid-range driver and higher power output.
Read the reviews

Manufacturer's notes
- Driver: LF 375mm (15")
- Amplitude Linearity (±2dB): 30Hz-300Hz
- Cut-off Frequency (-6dB, free-standing): 20Hz
- Max. Continuous SPL (1 metre): 115dB
- Input Connectors: 2 x Female XLR (pin 2 +ve)
- Input Sensitivity: 1.16V/3.5dBu (200W out @40Hz, 70Hz LP filter, max gain, both inputs driven)
- Input Impedance: Balanced > 10kΩ
- Amplifier Output: 450W continuous
- Dynamic Output: 1000W peak
- Low Pass Filters: 2nd Order Critically Damped
- Dimensions (HxWxD): 624 x 580 x 580mm (24.6″ x 22.8″ x 22.8″)
- Weight: 60kg (132lb)
Our take on the brand
Used
ATC
What if you spend a bit more?

At the heart of every Wilson Audio® product, you will find designs specifically created to elevate the audio playback experience in your home.This beautiful subwoofer is handcrafted by the same artisans and professionals who sculpt all Wilson Audio loudspeakers made in the United States of America.
Wilson Audio's Smallest Subwoofer
From the beginning, the Wilson Audio Special Application Engineering® team wanted to create a subwoofer system that follows the North Star development parameters set forth by David Wilson. We are excited to demonstrate how much of David's original intent is captured by Lōkē and invite you to visit your local authorized Wilson Audio Dealer for an unforgettable musical experience that will reshape your thinking around small footprint subwoofer systems.
Lōkē encompasses full compatibility across the myriad of TuneTot installations but also fundamentally expands the core capabilities of our other smaller floorstanding loudspeaker models: SabrinaX, Yvette, Sasha DAW, and their predecessors.
LōKē® is an all-in-one, simple to setup, and easy to manage subwoofer solution. Incorporated into LōKē's built-in amplifier (500 watts) are the most utilized functions from Wilson Audio's acclaimed ActivXO® Dual Subwoofer Crossover, including such key parameters as crossover frequency, crossover slope, phase, and level.
Our Summary
Product Strengths
- Enhances the venue in which a recording was made
- Can smooth out the treble by providing a more solid musical foundation
- Enhances subtle details in a recording
- Provides tight and precise bass and the ability to reveal a wide gamut of textural colors
- Integrates seamlessly into the system
Product Considerations
- The single line LCD display and click/turn navigation rotary is a clunky, time-consuming method of accessing nested functions
- The different parameters of the sub are on the back and controlled from the back, which means that users may have to keep pulling it in and out of position for each parameter change
- Reviewer notes a sense of skepticism due to the amp being manufactured by Dayton Audio
Comparisons (according to reviewers)
- LōKē is smaller than Wilson Audio's WATCH Dog
- Compared to systems without a subwoofer, LōKē reproduces music otherwise unheard
- LōKē, unlike the Wilson Audio WAMM Master Chronosonic subwoofer, has a built-in amplifier
- Some reviewers feel that two JL Audio 12's provide a better value compared to LōKē
Takeaway: The LōKē is a well-built subwoofer that integrates nicely with Wilson Audio and other loudspeaker systems to provide a fast and coherent bass response. Adding the LōKē to an existing system enhances the musical experience.
Video review
Our take on the brand

The SB1 stereo subwoofers have digital motional feedback for 30 dB less distortion.
Our Summary
Product Strengths
- Digital Motional Feedback (DMF) minimizes distortion in the bass region by monitoring acceleration on the aluminum cone and feeding back information to the DSP
- Response is flat down to 20Hz
- Sound quality improves in areas that have nothing to do with bass, and everything brightens up
- Immediately balanced and sophisticated sound
Product Considerations
- Some tweaking with regards to the positioning of the speakers is needed to get the best from the soundstaging
- The full manuals are online or to print off, which some may find a pain
- Packaging is massive
Comparisons (according to reviewers)
- Vs Dynaudio 18S: The Grimm subs overshadowed and outshone the Dynaudio
- Vs Audiovector R6: The soundstage thrown by these speakers is not as expansive as the Audiovector R6 speakers
Takeaway: The SB1 is designed to deliver a proper representation of music without sonic fireworks, it just works. It offers a turnkey solution for music lovers that want superlative sonics in a package that will fit with any home.
Video review
Our take on the brand
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When Nothing but the Finest Will Do
Edge Of The Art Design
No.32 represents the sum of our efforts, research, and knowledge gained over the past three decades as a leader in audio and subwoofers. Nothing we have built competes with the speed, agility, absence of texture, and vivid dynamic contrasts delivered by No.32. It represents the pinnacle of REL's considerable experience and is our standard for future innovation. A remarkable sonic achievement, it transcends its illustrious forebear, which was named Product of the Decade just a few years ago. It is 1,000 watts, has a 15"(380 mm) pure carbon fibre driver, and has exquisite cabinetry requiring three weeks of labour to complete. However, each of these features only hints at what it takes to reside at the top of REL's offerings, and No.32 is poised to be a design for the ages.
Beautiful Form Follows Functional Perfection
It is often said that form follows function. If that is true, what a lovely function we are following. The cabinet traces a curvilinear path established over a decade ago on the original Gibraltar. Here, the top surface tumbles down at the rear corners – a difficult treatment to execute, but one that produces a uniquely beautiful effect.
Triple-plated steel handles are inset into ellipses that allow for a secure grip, which is necessary when lifting an object over 200 pounds. Inside, the rear backing plate is well over half an inch thick and contoured to follow the inner surface, yielding a massively strong structure.
No.32's new badge treatment combines the materials that appear most frequently within its design; the carbon fibre used throughout the driver is inset within a polished, cast alloy basket that is finished in 3 layers of plating to achieve a jewel-like sparkle. The overall design speaks to the remarkable efforts that went into ensuring No.32 is as striking visually as it is technically.
Arrayed For Battle
No.32 permits the same vertically stacked line array as the ultimate No.31. It delivers transformative performance that no competitor has been able to. For those who have been seeking the ultimate musical and theatre experience, Line Arrays unlock the final dimension of system reproduction. Audiophiles have chased three-dimensional sound for years, yet they have missed the simple fact that the height—not the depth—of image is the missing link. By creating products that are designed to be stacked 3 (or in exceptionally tall rooms, 5) units high while retaining individual crossover and gain control of each subwoofer in the array, REL has created a masterpiece that finally delivers what the most experienced audiophiles have been chasing for the past 40 years.
How to Build Up to a Line Array. How to Setup and Dial in a Line Array.
The Utterly Reliable Beast
No.32's NextGen 7 Class D 1,000 watt amplifier was also used in its predecessor for over seven years. Thousands of these amplifiers are in use all over the world; they are a paragon of reliability. Its implementation in No.32 combines a new limiter with a much wider envelope to permit the widest dynamic swings possible. Also, No.32's dual parametric EQs allow for robust and flat response in the lowest ranges, extending below 20 Hz. When its second EQ is set to frequencies above the crossover point, No.32 meshes perfectly with the main speakers while simultaneously reducing room-based resonances.
Drive On
As with all RELs, No. 32's heart and soul is its 15" (380mm) driver. The driver's cone is constructed entirely of carbon fibre. Additionally, a carbon fibre centre cap is overlaid on the primary cone surface. This cone design results in a far stiffer driver that possesses superior self-damping qualities, removing even minor resonances that can obscure detail retrieval whilst keeping moving mass to an absolute minimum. No.32's driver suspension permits a full 4" (100mm) of travel fore and aft, an enormous amount of travel for such a large driver. These are some of the secrets to its performance. Transparency, allied to tremendous dynamics, is the result.
A Remote Like No Other
Take control of your No.32 by grasping the REL Reference Remote Control. Immediately, you will be struck by the perfect fit in your palm, the result of careful thought and numerous generations of trial-and-error fittings during prototype development. The second reaction to it is the awareness of its mass, which conveys its quality, permanence, and immutability. It tells you, "I am a thing of substance, of quality. Pay attention, what you do next matters." If you have owned a REL in the past (and fully 90% of Rel Reference owners are), all the familiar controls are right at hand, exactly where you'd want them. High (or low if using active speakers) level gain sits comfortably to the right side, the crossover rests in the middle, and .1/LFE gain is off to the left.
Below are three lovely metal toggle switches handle the critical setup functions. The remote's on/off switch is at the bottom. It is both as out of the way as possible and remains on once turned on and in use during setup without being accidentally turned off. In the middle sits the phase control. This is used only initially to determine the correct 0 or 180 degrees of phase. Additionally, the top access to the Dual Parametric EQ-marked with A and B—permits the flattest, deepest bass and, at the other end of the bass frequencies, the fine-tuning of crossover behavior. This gives you the perfect blending of subwoofer to main speakers and any vestiges of room-generated boom and resonance can be gently trimmed away.
REL's Reference Remote reminds you of the perfect butler—always immaculate, indispensable when called upon, then quietly set aside until a future time when perhaps additions or further improvements to one's system further require its services.
Our Summary
Product Strengths
- Described as a 'real beauty', it is the new reference top-of-the-range flagship subwoofer from REL
- Deep bass output and really good bass extension, with REL claiming -6dB at 15Hz
- Exquisite paint finish with 12 coats of final lacquer applied, with each subwoofer taking 5 weeks in total to build
- The remote control and digital display make it a very nice way of setting things up, and then after dialing in, the remote is probably not needed again
Product Considerations
- It is a huge and very heavy subwoofer, weighing 85 kilograms
- The handles on the side are useful for lifting such a heavy unit, but they are not very nice to look at
Takeaway: The No.32 is a top-of-the-line subwoofer that offers exceptional bass performance and exquisite build quality. It's perfect for audiophiles who want the very best and have the space to accommodate it.
Video review
Our take on the brand
What else competes at this price?

Our Summary
Product Strengths
- Deep bass response with extremely high output
- Impeccable build quality
- THX Dominus Certified
- Built like a tank with exceptional fit and finish
Product Considerations
- No included room correction or tuning app
- Large and heavy, difficult to position
- Prone to auto standby during light content
- Omits onboard room correction
Takeaway: The X15+ is a commanding presence that can achieve reference level output in a large room and smoothly engages protection mechanisms, preventing itself from coming undone. If one has big demands, the M&K Sound X15+ is certainly able to fulfill them.
Video review
Our take on the brand
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Our Summary
Product Strengths
- Delivers the best musical bass and seamless integration with speakers
- Improves the overall scale, solidity, and immersion of the sound
- Exceptional build quality with thoughtful design touches that contribute to pride of ownership
- Offers convenient and precise adjustments via a heavy-duty carbon remote control
- Creates a solid bass foundation that makes music seem more realistic and visceral
Product Considerations
- Subwoofers are quite large
- The remote control can be a pain to operate
- More bass pressure bleeds into other rooms
Comparisons (according to reviewers)
- No.31 delivers even better results than REL No.25 for less money
- No.31 takes advances in driver, cabinet, and crossover to another level than Carbon Special—Carbon Special gets about 80% of the way there
- Comparing the S/510 to the Carbon Special or the No.31 is another step down in resolution
- Compared to REL's T-Range, S-Range and Carbon Special, No.31 is better
- The No.31 is a more exquisite sonic refinement and class than REL HT/1205s
Takeaway: The No.31 is a musical subwoofer for high-end hifi systems, with sonic quality and detail that enhances the entire soundfield. It offers big, full, rich, and impactful bass that integrates seamlessly and provides a wonderful listening experience.
Video review
Our take on the brand

Our Summary
Product Strengths
- Very low distortion figures
- Versatile, elegant and modern design
- Insane speed and accuracy
- Auto equalization is featured
- Multiple setup options make it user and room-friendly
Product Considerations
- The unit itself is visually present in the room
- Optimal performance requires setup by a knowledgeable installer via computer
- This level of performance is not needed in a small room or with small speakers
Comparisons (according to reviewers)
- The Digital Drive Plus competes with the JL Audio's Fathom subwoofer line for price and performance
- The Digital Drive Plus is very realistic and powerful, even doing better than the reviewer's two 12-inch drivers, while the Velodyne Deep Blue is very nice
- The Digital Drive Plus is doing better than the SVS-2000 Pro
- The DD10+ is very close to the DD15+ in performance 90% of the time
Takeaway: This Digital Drive Plus is a subwoofer that adds realism and gives music an ease of presentation. The Digital Drive Plus will give the listener what they need if they want one subwoofer to do the work of two.
Video review
Our take on the brand

Our Summary
Product Strengths
- Powerful amplifier (3000W) and ample infrasonic response without bottoming out
- Clean output and agility suitable for both home theater and high-end music systems
- Sophisticated monitoring system, ensuring sound quality regardless of AC line conditions, and preventing thermal shutdown
- Extreme tweakability and control with app (iOS and Android) and has a 10-band parametric equalizer
- Top-shelf build quality with heavy-duty HDF and extensive internal bracing to minimize vibration
Product Considerations
- The D215s is big and heavy (over 200lbs), making positioning a chore
- It only comes in a black finish, which might not suit all decors
Comparisons (according to reviewers)
- The D215s offers some of the best performance seen in a sealed sub above 20Hz
- The only sealed sub that can challenge its distortion levels below 20Hz that Audioholics has dealt with is the JTR Captivator RS1—and even then only in long-term output
Takeaway: The D215s subwoofer delivers powerful and accurate bass, making it a great addition to any high-end audio setup. With its advanced technology and customizable settings, it can enhance the listening experience for both movies and music.
Video review
Our take on the brand

Our Summary
Product Strengths
- Push-pull configuration with two 12-inch drivers, one on the front and one on the bottom
- Powered by a 3,000-watt amplifier
- Features an iOS and Android app to control EQ mode, volume level, crossovers, a 10-band PEQ, and other settings
- The cabinet's push-pull configuration helps to cancel second order distortion by an additional 10-12dB
- Produces hard-hitting, super-fast, and high sound pressure LFE (low-frequency effects), even in large rooms
Product Considerations
- Does not come with grills, which could be an issue for those with pets or kids
- The manual PEQ system might be inelegant for a sub at its price point
- Lacks high-level inputs
Comparisons (according to reviewers)
- Compared to Legacy XTREME XD subs, the D212s is massively more powerful, forceful and clean, with zero perceived overhang
Takeaway: The D212S is a subwoofer with a small screen for simple controls and a mobile app for detailed sound adjustments. The D212S is a good choice for anyone looking for a powerful and clear bass experience for music or movies.
Video review
Our take on the brand
Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Magazine reviewers and YouTubers have tried this product—so we've summarized their strongest opinions below.
Product Strengths
- Tight, clear, distortion-free low end is produced
- Best subwoofer ever heard
Product Considerations
- It weighs a lot
Takeaway: The SCM0.1/15 Pro subwoofer delivers amazing low end, adding tight and clear bass to the overall sound. This subwoofer could be the perfect choice to extend the range of monitors.
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