The ATC SCM150P SLT is a reference-level passive floorstanding loudspeaker built for exceptional accuracy, dynamics, and musical realism. It combines ATC’s proven driver technology with a carefully engineered passive crossover. As a result, it delivers effortless performance with outstanding detail and deep, controlled bass.
In addition, the SCM150P SLT offers wide and even dispersion. This creates a spacious soundstage with precise imaging, making every recording sound natural and engaging.
Advanced three-way driver system
The SCM150PSLT features the ATC SM75-150S soft dome midrange driver together with the latest 375mm SL specification bass driver. Furthermore, the large ATC motor assembly improves control and reduces distortion. Because of this, the speaker delivers accurate vocals, powerful bass, and exceptional clarity.
Passive loudspeaker design
The SCM150P SLT works with an external amplifier, giving you the freedom to choose the electronics that best suit your system. At the same time, the optimized crossover preserves smooth frequency response and excellent phase accuracy.
Main Features
- Reference-level passive three-way floorstanding loudspeaker
- ATC SM75-150S soft dome midrange driver
- 375mm SL specification bass driver
- Large ATC motor assembly
- Wide dispersion for precise stereo imaging
- Optimized passive crossover design
- Compatible with external amplification
- Hand built in the UK
- 6-year manufacturer warranty





















