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ATC Launches Statement EL50 Anniversary Loudspeaker
The EL50 Anniversary active 3-way tower is the latest evolution of ATC’s winning design blueprint.
ATC is delighted to introduce the EL50 Anniversary to audiophiles and music lovers seeking long-lasting high performance, design and engineering quality. It’s the latest evolution of the legendary ATC 50 loudspeaker design, featuring discrete active tri-amp technology first deployed by the SCM70 in the 1990s and refined through the SCM50 Anniversary speaker in 2004 and the SE Series in 2014. Its industrial design draws from the EL150, released in 2006, the first ATC loudspeaker to employ an elliptical enclosure and designed by Billy Woodman. Leather detailing on the front face and beautiful hand-selected veneers further elevate the design.
New Discrete Active Amp-Pack
This advanced new model incorporates a new, proprietary 3-channel active ‘Amp-Pack’ featuring balanced input, user controls, active crossovers and three power amp channels, delivering 200W, 100W and 50W continuous power to the bass, mid and high-frequency channels, respectively. Within the first line level stages, new discrete gain blocks have been developed and implemented within a balanced instrumentation input and the fourth-order active crossovers to achieve a lower noise floor and reduce distortion. In addition, the power supply has been comprehensively re-designed and upgraded with individual toroidal transformers for each power amplifier channel, plus a separate transformer serving the low voltage supply. This topology improves headroom under demanding use and reduces intermodulation distortion between the channels to deliver greater clarity to the listener.
Cabinetry and Finishing
Building on previous development work, the EL50 Anniversary cabinet construction has been improved and updated via advanced in-house manufacturing technology to increase stiffness and internal damping, reducing cabinet-borne colouration in the upper-bass and mid-range. The bass driver is mounted into a precision turned aluminium ring which is bolted into the cabinet face, further increasing cabinet integrity. A curved cabinet face and edges create a smooth transition from the driver output into the room, reducing edge diffraction and producing a more uniform on and off-axis frequency response for reduced linear distortion. Hand-selected and matched European walnut veneers cover the curved elements of the cabinet complemented by ebony inlays on the rear panel and finished with a high-gloss polyester lacquer. Upholstered napa leather panels around the mid and high-frequency drivers and the lower front section add a contrasting texture while integrating cleanly with the cabinet’s overall form.
Drive Units
The drive unit complement is built entirely in-house with a focus on low distortion and consistent performance at all playback levels with any source material. The SH25-76S ‘S-Spec’ tweeter uses a compact but exceptionally powerful neodymium motor, a dual-suspension system to precisely control the coil motion, and a coated fabric dome for smooth, uniform on and off-axis response. The critical mid-band is reproduced by ATC’s SM75-150S ‘Superdome’ mid-range driver, covering 380Hz to 3.5kHz. Its combination of high-power magnet drive system and large voice coil mated to a dome diaphragm results in a driver system that can resolve the smallest musical details while effortlessly handling the largest dynamic peaks found in complex recordings. Completing the system, the SB75-234SL bass driver features ATC’s Super Linear motor system for reduced 3rd harmonic distortion in the upper-bass/lower-midrange resulting in improved clarity and integration with the mid-range driver. At the lowest octaves, an optimised spider-roll-surround pairing allows large linear excursion for controlled low frequency output.
The EL50 Anniversary launches as an exclusive run of 50 pairs, each supplied with a hardbound owner’s handbook. The book celebrates ATC’s journey from its origin as a drive unit specialist in 1974 to its status as one of the world’s most highly respected loudspeaker manufacturers, revered by music lovers and audiophiles, and trusted by hundreds of international recording and mastering studios.
The new EL50 Anniversary will make its global debut at The Bristol Hi Fi Show, Friday 20th – Sunday 22nd February 2026.
ATC EL50 Anniversary
Availability: March 2026
For pricing and availability in the UK and internationally, please contact your local dealer or distributor.
Contact information can be found here.
For detailed specifications, please visit the EL50 Anniversary product web page.
ATC Announces New SSM Series Wall/Ceiling-Mount Monitors and R4-150 Pro Quad-Mono Power Amplifier
Stroud, Gloucestershire, UK – ATC is expanding its professional loudspeaker portfolio with the introduction of the SSM Series, a new generation of shallow, wall and ceiling-mount passive studio monitors designed for modern control rooms, surround and immersive audio environments. The range launches with two models – the SSM12i Pro and SSM25i Pro – alongside the new R4-150 Pro, a four-channel power amplifier that makes an ideal partner to the new loudspeaker series.
Designed for Space-Critical Installations
Both SSM models feature very shallow enclosures – 147 mm / 5 13/16” for the two-way SSM12i Pro and 198 mm / 7 13/16” for the three-way SSM25i Pro – including mounting hardware. This enables integration into control rooms where room width, depth and ceiling height are critical constraints.
The cabinets can be mounted in either portrait or landscape orientation and use a robust mounting system that attaches flat to a wall or ceiling. A pivoting mechanism allows precise aiming toward the mix position, enabling improved imaging, and in-room response.
Both enclosures incorporate internal steel reinforcement and a safety-tether point to meet the practical requirements of secure professional installation, particularly for overhead mounting.
SSM12i Pro – 2-way
The SSM12i Pro is a passive two-way loudspeaker engineered around ATC’s proprietary drive-unit technology and housed within a sealed cabinet optimised for on-wall/ceiling installation.
Low and mid-range is handled by the SB45-150CLD 150 mm driver, whose Constrained Layer Damping (CLD) cone minimises breakup modes while maintaining linear behaviour across the operating band. Above the 2.2 kHz crossover point, ATC’s SH25-76 25 mm dual-suspension soft-dome tweeter provides low distortion and excellent high-frequency resolution.
Together with a newly developed crossover network – modelled and fine-tuned specifically for on-wall operation – the SSM12i Pro delivers high resolution, controlled dispersion, and accurate translation with compact control & mix rooms.
SSM25i Pro – 3-way
For medium to large control rooms, including those used for mixing Dolby Atmos and other immersive audio formats, the SSM25i Pro offers improved bandwidth and output via a three-way sealed design and three ATC proprietary drive units.
Low frequencies are handled by the SB50-164SC 164 mm/6.5” driver featuring a short-coil/long-gap motor and paper/carbon-fibre composite cone. Mid-range duties are performed by ATC’s renowned SM75-150 75 mm/3” soft-dome – known for its exceptional clarity and minimal coloration – while high frequencies are managed by the SH25-76S tweeter, featuring a high-flux motor to deliver an extended high-frequency response and very low distortion.
The crossover network has again been engineered specifically for boundary mounting, ensuring the speaker delivers ATC’s signature neutrality and transient accuracy even when installed close to surfaces and perfect integration with ATC’s range of active loudspeakers and subwoofers.
Physical Specifications (Selected)
SSM12i Pro (flat portrait orientation inc. hardware):
- 517 × 315 x 147mm / 20 3/8 x 12 3/8 x 5 13/16 ” (H x W x D).
- 14.8 kg / 32.6lbs.
SSM25i Pro (flat portrait orientation inc. hardware):
- 767 × 380 x 198mm / 30 3/16 x 14 15/16 x 7 13/16” (H x W x D).
- 28.2 kg / 62.2lbs.
Due to weight and overhead mounting considerations, SSM Series products must be installed
by qualified professionals. Both models ship with mounting hardware drilling templates.
R4-150 Pro — Quad-Mono Amplification for Professional Multi-Channel Systems
To complement the SSM Series, ATC introduces the R4-150 Pro, a new 5U rack-mount, quad-mono power amplifier built around four independent power supplies and class A/B MOSFET output stages.
Each channel delivers 150 W continuous, making the R4-150 Pro ideally suited for the dynamic demands of immersive audio and multi-channel playback or bi-amping passive nearfield monitors. Balanced inputs are provided via four XLR connectors with very high common-mode rejection, while outputs use Neutrik NL4 sockets for a secure and reliable connection.
With convection cooling for silent operation and built-in thermal and DC-offset protection, the R4-150 Pro is designed for reliable long-term use in the most demanding professional studio installations. A remote power-on/off trigger further simplifies integration into larger control systems.
Pricing & Availability
All three products are available to order now.
SSM12i Pro is available at a RRP (Recommended Retail Price) of £2167 + VAT per pair.
For more in-depth information, please visit the dedicated SSM12i Pro Product Webpage.
SSM25i Pro is available at a RRP of £4667 + VAT per pair.
For more in-depth information, please visit the dedicated SSM25i Pro Product Webpage.
R4-150 Pro is available at an RRP of £3667 + VAT each.
For more in-depth information, please visit the dedicated R4-150 Pro Product Webpage.
For pricing and availability in your country, please contact your local dealer or distributor.
You can find them listed here in the Where To Buy section of the website.
ATC Unveils High-Output SCS140iW Pro 2×12” and SCS240iW Pro 2×15” In-Wall Subwoofers.
Stroud, Gloucestershire, UK: ATC is proud to introduce its SCS140iW and SCS240iW Pro subwoofers, new dual-driver in-wall models evolved from the established 12” SCS70iW Pro and 15” SCS120iW Pro designs. Representing ATC’s most powerful in-wall subwoofer systems to date, these models deliver significantly increased output and performance for modern stereo, surround and immersive monitoring environments.
The larger SCS240iW Pro has been engineered for the largest control rooms, stereo and immersive formats and for seamless integration with ATC’s SCM300AiW main monitors. The SCS140iW Pro, meanwhile, is ideally suited to partner the SCM200AiW main monitors and performs equally effectively as a dedicated LFE solution for surround and immersive formats such as Dolby Atmos. Both subwoofers provide extended low-frequency capability and exceptional headroom, enabling accurate monitoring in demanding professional environments.
SCS140iW Pro
The SCS140iW Pro is a new 2×12” design that builds upon the strengths of the proven SCS70iW Pro by utilising a pair of 12”/300 mm drivers and dual remote amplifiers. This upgrade delivers a 6 dB increase in output, achieving a continuous SPL capability of 116 dB and a peak of 121 dB at 1 m. Despite this performance, the cabinet remains compact, with a width that matches the SCM200AiW in-wall main monitor for a cohesive visual and acoustic pairing. The SCS140iW Pro can also partner smaller ATC models or complement any system requiring extended bass performance with high SPL and headroom.
SCS240iW Pro
Designed for the largest control rooms, the SCS240iW Pro is the most powerful and linear subwoofer manufactured by ATC. Evolved from the SCS120iW Pro, this new 2×15” design doubles both the driver and amplifier complement, resulting in a 6 dB increase in output over its predecessor. It delivers 119 dB continuous and 126 dB peak SPL at 1 m.
The cabinet width matches the SCM300AiW main monitor, creating an impressive full-range in-wall system when installed together. The SCS240iW Pro may also be used alongside ATC’s larger mid-field monitors — including the SCM150A Pro — or integrated into any system demanding a low cut-off frequency with high dynamic range.
Drive Unit Technology
The 12”/300 mm and 15”/375 mm drivers used in the SCS140iW Pro and SCS240iW Pro are built entirely in-house by ATC, reflecting the company’s commitment to designing and manufacturing products from component level without compromise. Both drivers feature a 30 mm magnetic gap, which is 50% longer than previous generation bass drivers. This extended gap reduces motor-generated distortion while enabling the high excursion required for accurate, dynamic low-frequency reproduction. Every element of the driver — from the motor to the suspension — has been meticulously optimised using advanced analysis tools to deliver deep, controlled bass from 120 Hz down to below 20 Hz, all with minimal distortion and maximum impact.
Amplifier Technology
Power for the new subwoofers is provided by dual R1-300 Pro remote-mounted 7U/19” amplifiers, each using 300 W Class A-B output stages. Their rack-mount format offers installation flexibility, allowing the amplifiers to be located within a nearby wall, a control-room rack, or a machine room. Amp connections are made using NL4 speaker cables and 5-pin XLR. The amplifiers offer balanced stereo inputs and full-range balanced outputs, with analogue 4th-order Linkwitz-Riley filters providing multiple crossover options including an industry-standard 80 Hz setting and a bypass mode for use with external processing. Polarity switching, variable phase adjustment and a stepped attenuator allow precise system alignment. The amplifiers also feature convenient mute control via footswitch, with daisy-chain capability for multiple subs.
Both subwoofers are available to order now.
SCS140iW Pro is available at a UK RRP (Recommended Retail Price) of £7700 + VAT including 2 x R1-300 Pro remote power amplifiers (excluding cables).
For more in-depth information, please visit the dedicated SCS140iW Pro Product Webpage.
SCS240iW Pro is available at a UK RRP of £10,817, including it 2 x R1-300 Pro remote power amplifiers (excluding cables).
For more in-depth information, please visit the dedicated SCS240iW Pro Product Webpage.
For pricing and availability in your country, please contact your local dealer or distributor. You can find them listed here in the Where To Buy section of the website.
