ATC Launches SCM20ASL 2-Way Active Stand-Mount Loudspeaker

AXPONA 2025 – (April 10, 2025) – The new ATC SCM20ASL 2-way Stand-Mount Loudspeaker continues ATC’s philosophy of combining the best in-house drive units with matched on-board amplification for optimal fidelity. Uniting the benefits of compact size and wider bandwidth with the improved phase coherence, response speed and dynamics of ATC active operation, the SCM20ASL is perfected for small to medium sized listening environments. In addition, its sealed cabinet design ensures exceptionally well controlled bass even in smaller spaces and/or when located close to walls.

Integrating a 2-way active system within a 20-litre stand-mount cabinet, the new model features ATC’s proprietary 150mm/6” ‘Super Linear’ Mid/Bass driver and 25mm/1” ‘S-Spec’ dual-suspension tweeter, powered by on-board class A/B MOSFET power amplifiers capable of delivering 200W and 50W continuous power to the bass and HF drivers respectively. The performance and power output of each power amplifier is carefully tailored to driver demands and the musical elements they reproduce.

The Mid/Bass driver employs a large 75mm/3” voice coil and short-coil (long-gap) motor assembly featuring ATC’s proprietary ‘SL’ motor technology, which reduces distortion from the upper bass into the midrange. ATC’s 25mm ‘S-Spec’ soft-dome tweeter features a dual-suspension and very high energy 2.1 tesla motor combining to deliver an extended response well beyond 20kHz with exceptional reproduction of fine detail.

Crossovers are active, analogue 2nd order Linkwitz-Riley operating at line-level for maximum efficiency, while an all-pass filter is included to optimize the phase response through the crossover region, resulting in far improved tonal balance and imaging.

Input to the loudspeaker is via balanced XLR, located on the rear panel and there are user controls for input sensitivity and low frequency shelf cut and boost. The input sensitivity control allows the user to tailor the input gain to suit their source and pre-amplifier combination for more consistent performance. The low frequency shelf control gives the user the option to subtly adjust the bass response to suit their room.

The SCM20ASL cabinet features a combination of bracing for stiffness and damping to suppress resonance and is available in a wide range of real wood veneers, painted satin finishes and high gloss lacquers. Standard finishes include Cherry, Black Ash, Walnut and Oak veneers, Satin Black or Satin White paint. Premium finishes include Rosewood, European Crown Cut Walnut, Burr Magnolia, Pippy Oak, Burr Poplar veneers. The speaker is supplied with a removeable grille, wrapped in black acoustically transparent cloth.

Key Features

● 150mm/6” ATC ‘Super Linear Mid/Bass driver loaded in a compact sealed cabinet
● 25mm/1” A TC ‘S-Spec’ soft-dome dual-suspension HF driver
● On-board ATC active 250W ‘Amp Pack’ module
● Balanced input and 2nd order Linkwitz-Riley active crossovers
● User adjustable input sensitivity and bass shelf controls
● 2 x class A/B MOSFET power amplifiers, 200W Mid/Bass and 50W high frequency
● Hand-built in England
● 6-year warranty

Why Active?

In the quest for the best possible performance, all high-quality loudspeaker system manufacturers will have struggled with the limitations of passive crossover networks. Even though excellent results are possible from passive systems, a multi-way loudspeaker system will only realize its true potential if implemented as an active design. There are a few practical and economic reasons why passive speakers have remained so popular in the Hi-Fi market but, focusing on objective performance alone, active loudspeaker systems offer the following advantages:

● More accurate crossovers due to fixed filter ‘load’.
● Wider practical choice of crossover type/shape due to active line level operation.
● Greater dynamic range due to elimination of passive crossover losses.
● Ideally matched amps and more efficient use of amplifier power.
● Improved frequency response and stereo matching due to speaker-amp calibration.
● Better driver control: a more direct connection to the drivers with lower electrical resistance.
● Lower inter-modulation distortion due to reduced amplifier operating bandwidth.

Product Availability: April 2025

U.S. Retail Pricing

Standard Finishes: Cherry, Oak, Walnut, Black Ash, Black Satin, White Satin
$9,999 pr/retail – Standard Finishes

Premium and High Gloss Finish: Rosewood, Burr Magnolia, Pippy Oak
$10,999 pr/retail – premium finish
+$2,500 additional for high gloss
$11,999 pr/retail – piano black or matte white

Visit the LMA ATC SCM20ASL website page (click here)

About Lone Mountain Audio / ATC U.S.

Located in Las Vegas, Nevada, Lone Mountain Audio is the exclusive U.S. distributor for ATC Loudspeakers for the Hi-Fi and CI (custom integration) marketplaces providing sales, marketing, customer service and full support for all ATC Loudspeaker products.

About ATC, Acoustic Transducer Company

ATC, Acoustic Transducer Company stands alone, hand building one speaker at a time for one person, while the rest of the industry focuses on building thousands of units to supply the masses. Once you hear ATC music reproduction done right, you’ll understand what Dolby Laboratories, Lenny Kravitz, Tom Petty, Pink Floyd, Diana Krall, Tom Petty, Jack White, Blackbird Studios, Alan Myerson, Shawn Murphy and so many more recording artists have chosen ATCs for decades. Wherever the best is required you will find ATC.

Lone Mountain Audio Contact: Leland Leard ● 1 (702) 307-2727 ● email: [email protected]

Lone Mountain Audio Press Contact: Roberta Lewis ● Tel: 1 (713) 408-9401 ● email: [email protected]