ATC SCM150PSL Classic

The ATC SCM150P SL Classic is a high-performance passive loudspeaker designed for listeners who want exceptional scale, accuracy, and dynamic sound. In addition, it performs at a very high level in both professional recording studios and premium home audio systems when paired with high-quality amplification.

As the passive version of the SCM150 platform, the SCM150P SL Classic combines advanced driver technology with precise cabinet engineering. As a result, it reproduces music and speech with impressive clarity, strong dynamics, and outstanding tonal balance across the full frequency range.

ATC soft dome midrange driver

At the centre of the SCM150P SL Classic sits ATC’s acclaimed SM75-150S soft dome midrange driver. Therefore, vocals and instruments sound highly natural, detailed, and lifelike. In addition, the dedicated midrange driver helps reduce colouration, which improves transparency and keeps recordings sounding clean and realistic.

Improved tweeter and bass reflex design

ATC upgraded the SCM150P SL Classic with a refined tweeter and an enhanced bass reflex port profile. As a result, high frequencies sound smoother and more detailed, while bass response feels deeper and better controlled. At the same time, the speaker keeps excellent balance and consistency throughout the audio range.

15-inch bass driver with Super Linear technology

The SCM150P SL Classic features a professional-grade 15-inch bass driver using ATC’s proprietary Super Linear magnet system. Because of this design, the speaker delivers powerful, controlled bass with reduced distortion. In addition, the large woofer maintains clean low-frequency performance even at higher playback levels.

Flexible passive system design

The passive design allows users to pair the SCM150P SL Classic with their preferred amplifier. Therefore, listeners can build a system that matches their room size and sound preferences. Furthermore, ATC carefully tuned the passive crossover to ensure smooth integration between the bass, midrange, and tweeter drivers.

Wide dispersion and precise imaging

The SCM150P SL Classic spreads sound evenly across the listening area, which helps create stable stereo imaging and balanced sound. As a result, listeners experience consistent performance from different seating positions. In addition, the speaker offers excellent amplitude and phase response across the full audio spectrum.

Main Features

• High-performance passive 3-way loudspeaker
• Designed for professional studios and high-end home audio
• ATC SM75-150S soft dome midrange driver
• Professional-grade 15-inch bass driver
• ATC Super Linear magnet technology for reduced distortion
• Upgraded tweeter for smoother and clearer highs
• Improved bass reflex port for tighter low-frequency control
• Wide and symmetrical sound dispersion
• Excellent amplitude and phase response
• Passive crossover for smooth driver integration
• Compatible with high-quality external amplifiers
• Suitable for music and speech playback
• Designed and built by ATC