The ATC SCM40A is the active version of the SCM40, designed for maximum control, precision, and simplicity. It is fully developed and built in-house by ATC. As a result, it delivers highly detailed, cohesive, and dynamic sound with built-in amplification and active crossover design.
Compared to the passive SCM40, the SCM40A removes the need for an external amplifier and crossover. Therefore, it offers a fully optimized, factory-matched system with even greater control, timing, and coherence.
Active three-way ATC driver system
The SCM40A uses a 25mm dual-suspension soft dome tweeter with wave guide, a dedicated ATC soft dome midrange driver, and a 164mm short-coil bass driver. In addition, all drivers use large optimized motor assemblies for high accuracy and low distortion.
Built-in amplification and active crossover
The SCM40A includes a 242W Class A/B tri-amplifier and active crossover filters. Therefore, each driver is directly powered and precisely controlled. As a result, the system delivers excellent dynamics, timing, and overall coherence.
Amplifier-free system design
Because amplification is built in, the SCM40A does not require an external power amplifier. In addition, this ensures perfect matching between amplification, crossover, and drivers for consistent performance.
Sound performance
The SCM40A delivers exceptional cohesion, timing, and dynamic control. As a result, it produces a natural, fast, and highly transparent sound with strong musical realism.
Main Features
- Active version of the ATC SCM40
- 25mm dual-suspension soft dome tweeter with wave guide
- ATC soft dome midrange driver
- 164mm short-coil bass driver
- Large optimized motor assemblies
- Built-in 242W Class A/B tri-amplifier
- Active crossover filters
- Amplifier-free system design
- Cherry and Black Ash veneer finishes
- Satin Black and Satin White painted finishes
- 6-year manufacturer warranty
“these ATCs… take all in their stride, revealing a lovely cohesion throughout the frequency range. Resolution, timing and dynamics are all spot-on… factor in the built-in amplification, exotically engineered in-house drive units and the resultant exceptional sound quality, and the SCM40As emerge as something of a high-end bargain. Consider us smitten.”What Hi-Fi, March 2015.


















