ATC SCM20ASL Classic
Professional Power. Precision Performance.
The SCM20ASL is a high-performance, active two-way studio monitor designed for exceptional clarity, control, and dynamic range. A built-in 250w ATC amplifier pack eliminates the need for external amplification, offering a compact yet powerful solution for professional and high-end listening environments.
Pair it with a quality preamp, DAC, or streaming preamp for studio-grade sound.
Only available in-store
Category Standmount Loudspeaker
Country UK
Manufacturer ATC
Professional Power. Precision Performance.
The SCM20ASL is a high-performance, active two-way studio monitor designed for exceptional clarity, control, and dynamic range. A built-in 250w ATC amplifier pack eliminates the need for external amplification, offering a compact yet powerful solution for professional and high-end listening environments.
Pair it with a quality preamp, DAC, or streaming preamp for studio-grade sound.
Only available in-store
Category Standmount Loudspeaker
Country UK
Manufacturer ATC
Professional Power. Precision Performance.
The SCM20ASL is a high-performance, active two-way studio monitor designed for exceptional clarity, control, and dynamic range. A built-in 250w ATC amplifier pack eliminates the need for external amplification, offering a compact yet powerful solution for professional and high-end listening environments.
Pair it with a quality preamp, DAC, or streaming preamp for studio-grade sound.
Only available in-store
Category Standmount Loudspeaker
Country UK
Manufacturer ATC
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Drivers
LF ATC 6.5”/150mm Super Linear, HF ATC 1”/25mm Dual-Suspension ‘S-Spec’ Tweeter
Amplitude linearity
80Hz – 20kHz (+/-2dB)
Cut-off frequencies
55Hz – 25kHz (-6dB freestanding)
Dispersion
+/-80° coherent horizontal, +/-10° coherent vertical
Maximum continuous SPL
108dB (per pair @ 1m)
Crossover frequency
2.5kHz
Recommended Amplifier Power
75 to 300 Watts
Impedance
8 Ohm (5.5 Ohm Min.)
Connectors
2 x Pairs Binding Posts/4mm Plugs – Bi-Wireable
Accessories Inc. (per pair)
2 x fabric wrapped grills.
Cabinet Dimensions
440 x 239 x 326mm / 17.32 x 9.41 x 12.83″ (H x W x D inc. grill & terminals)
Weight
18kg
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Free Delivery within Mainland UK.
60-Day Money-back Guarantee
Returns Policy
ATC SCM20 ASL Studio Monitor
Why Choose the SCM20ASL?
Unlike traditional passive systems, the SCM20ASL integrates its amplification and active crossover electronics directly into the speaker cabinet. A balanced XLR input feeds a second-order Linkwitz-Riley crossover, which precisely splits the signal to two dedicated class A/B amplifiers—one for the mid/bass driver and one for the high-frequency driver.
The result?
✔️ Superior timing and tonal accuracy
✔️ Greater dynamic control
✔️ Remarkably low distortion
Crafted for Performance
The cabinet is engineered for acoustic neutrality, with robust bracing and strategically placed bitumastic damping panels to reduce resonance and colouration. Hand-built in England, the SCM20ASL delivers ATC’s renowned engineering and craftsmanship in every detail.
Prefer a floor-standing version? Check out the SCM20ASLT—identical performance, tower design.
Key Features
6" ATC Super Linear mid/bass driver in sealed enclosure
1" ATC ‘S-Spec’ dual-suspension soft dome tweeter
Built-in ATC 250W amplifier pack
Dual class A/B MOSFET amps: 200W (mid/bass) + 50W (HF)
Balanced XLR input with 2nd-order active crossovers
Adjustable input sensitivity & bass shelf EQ
Hand-crafted in the UK
Backed by a 6-year warranty
Finish Options
Choose from a wide range of premium real wood veneers and paint finishes, including:
Standard Finishes:
Natural Gloss, Black Ash, Cherry, Walnut, European Walnut, Oak, Rosewood, Satin Black, Satin White, and more.
Custom Finishes:
Additional veneers and colours available on request.
