The ATC SCM150ASL Pro is a large-format active three-way studio monitor built for uncompromising reference accuracy and high power handling in professional recording and mastering environments. Central to its design are ATC’s proprietary drive units: a 25mm dual-suspension S-Spec soft dome tweeter for exceptional high-frequency clarity, a 75mm Super Dome midrange driver renowned for its transparency, and a full “SL” 375mm bass driver delivering deep, controlled low end with minimal distortion. Together they create a balanced, phase-coherent response that faithfully reproduces the source without coloration.
An integrated 350-watt tri-amplifier pack provides dedicated power to each driver, 200W for low frequencies, 100W for midrange, and 50W for highs. This grounded-source Class A/B design maintains precise control and transient accuracy even at high monitoring levels. Rear-panel controls allow adjustment of LF contour and input sensitivity, while active FET overload protection ensures reliability under continuous use. The ATC SCM150ASL Pro is designed for both free-standing and soffit-mounted installations, achieving amplitude linearity of ±2dB between 60Hz and 17kHz and a maximum continuous SPL of 117dB at one metre.
Hand-built and individually calibrated in the UK, the ATC SCM150ASL Pro continues ATC’s tradition of delivering truthful, fatigue-free monitoring trusted in top studios worldwide. It remains a reference point for engineers and producers who demand precision, dynamic range, and unwavering consistency from their main monitoring system.
Features
- Active three-way design with discrete Class A/B tri-amplification
- Continuously variable LF contour and input sensitivity controls
- Active FET overload protection with front-panel gain-reduction indicator
- Hand-built in the UK with matched driver and amplifier calibration