ATC SCM20A SLT

The ATC SCM20A SLT is a high-performance 2-way active floor-standing loudspeaker designed for listeners who demand studio-level accuracy in modestly sized rooms. In addition, it combines compact dimensions with powerful amplification and precise sound reproduction for uncompromising music playback.

The SCM20A SLT uses a sealed cabinet and an integrated active amplifier system to deliver exceptional clarity, timing, and dynamic control. As a result, it provides highly accurate sound with excellent bass precision and natural tonal balance.

Sealed cabinet for precise timing

The SCM20A SLT uses a sealed enclosure rather than a bass reflex design. Therefore, it achieves tight low-frequency control and excellent timing accuracy. In addition, this cabinet design helps reduce resonance and improves transient response across the audio range.

ATC 150 mm Super Linear mid/bass driver

ATC equips the speaker with a 150 mm Super Linear mid/bass driver. As a result, it reproduces midrange detail with impressive clarity while maintaining controlled and accurate bass. At the same time, the driver delivers low distortion even during demanding playback.

25 mm S-Spec soft dome tweeter

The SCM20A SLT features a 25 mm S-Spec soft dome tweeter with dual suspension. Therefore, it produces detailed and refined high frequencies with smooth integration into the midrange. In addition, it helps create a balanced and natural sound signature.

Integrated active amplifier system

The SCM20A SLT includes a built-in 250 W active amplifier pack mounted to the rear of the cabinet. Therefore, each driver receives dedicated amplification for greater control and efficiency. In addition, this direct connection between amplifier and driver improves dynamic range compared to passive systems.

Precision active crossover design

The speaker uses a balanced input stage feeding a 2nd order Linkwitz-Riley active crossover. As a result, timing and level accuracy improve between the drivers. Furthermore, this active approach reduces distortion and increases system precision.

User-adjustable controls

The amplifier module includes adjustable input sensitivity and bass shelf controls. Therefore, users can fine-tune performance to better suit room acoustics and personal preferences. In addition, this flexibility supports easier system integration.

Heavy and inert cabinet construction

ATC builds the cabinet with extensive bracing and damping to suppress resonance. As a result, unwanted cabinet coloration stays low even at higher listening levels. Furthermore, bitumastic damping panels help maintain a clean and neutral sound.

Main Features

• High-performance 2-way active floor-standing loudspeaker
• 150 mm ATC Super Linear mid/bass driver
• 25 mm S-Spec dual-suspension soft dome tweeter
• Integrated 250 W active amplifier module
• 2 x Class A/B MOSFET amplifiers (200 W bass/mid, 50 W high frequency)
• Balanced input with 2nd order Linkwitz-Riley active crossover
• User-adjustable input sensitivity and bass shelf controls
• Sealed cabinet design for precise timing and control
• Heavy braced and damped cabinet construction
• Available in a wide range of finishes
• Hand-built in England
• 6-year warranty