ATC SCM150

Reference-scale monitoring for the largest listening rooms

ATC SCM150 Product Overview

The ATC SCM150 is the largest loudspeaker in the Classic Series from ATC.
It is designed for listeners who require maximum dynamic headroom, low distortion and absolute control at realistic playback levels—without departing from ATC’s commitment to accuracy.

Available in passive and active configurations, the SCM150 brings ATC’s professional monitoring expertise into the home at full scale.

At Authentic High End, we position the SCM150 as a no-compromise reference for large rooms and long-term systems.

Design Intent

The SCM150 is engineered to:

• reproduce music accurately at high sound pressure levels

• maintain stability and clarity during complex, dynamic passages

• preserve tonal balance without embellishment

Rather than adding character, the SCM150 focuses on consistency and realism, allowing the recording to speak for itself.

Engineering & Construction

According to ATC, the SCM150 features:

• a three-way loudspeaker design

• ATC-designed and manufactured drive units

• a large, rigid enclosure to minimise coloration

• engineering derived directly from ATC’s professional monitor platforms

The increased cabinet volume and driver capability provide greater bass authority and dynamic ease compared to smaller Classic Series models.

Passive and Active Versions

The SCM150 is offered in two configurations:

SCM150 Passive

• Intended for use with high-quality external amplification

• Allows the listener to select amplification according to system goals

• Suitable for traditional high-end passive systems

SCM150 Active

• Integrates ATC’s own amplification

• Uses an active crossover topology

• Designed as a fully optimised, factory-matched solution

Both versions share the same acoustic goals and voicing.

Listening Character

The ATC SCM150 is characterised by:

• exceptional midrange realism

• powerful, controlled low-frequency reproduction

• effortless dynamics with vast headroom

• stable imaging even at high playback levels

It remains composed where smaller loudspeakers reach their limits, making it suitable for demanding programme material and large spaces.

Room Size & Placement

The SCM150 is best suited for:

• large listening rooms

• listeners who want realistic scale and authority

• installations where speaker placement and room acoustics can be optimised

Its size and output capability require adequate space to perform as intended.

System Matching

• Passive version: benefits from powerful, stable amplification with strong current delivery

• Active version: requires only a suitable source and preamplifier

The SCM150 rewards careful system design and scales clearly with upstream quality.

Position Within the ATC Range

Within the ATC lineup, the SCM150:

• sits above the SCM100 in scale and output capability

• represents the largest Classic Series loudspeaker

• shares core technology with ATC’s flagship professional monitors

It is often chosen as a final destination loudspeaker.

Who Is the ATC SCM150 For?

The SCM150 is ideal for listeners who:

• require very high output capability

• value accuracy and low distortion

• have large listening rooms

• want studio-grade performance at home

It is a loudspeaker designed for uncompromised, long-term listening.

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