ATC SCM20SL

The SCM 20 became a definitive classic monitor during the mid 90’s. It took over 3 years to develop and represented ATC’s first venture into affordable domestic monitoring.

Central to its performance is the mid/bass unit designed by Billy Woodman and hand made in house at ATC. The hybrid design incorporates a 150mm bass cone on to which is grafted a 75mm soft dome.

The magnet assembly utilises ATC’s unique “Super Linear Technology” which greatly reduces distortion in moving coil drive units by a very significant 12-15dB (3rd harmonic). To minimise Time Domain Distortion both dome and cone are made from acoustically “dead” polyester wave material doped with ATC’s own formulation.

Not only does the SCM20 Series reproduce bass with remarkable articulation and authority, it also has outstanding mid-band clarity, incredible dynamic range, and awesome power handling.

Accompanied by either ATC SCA2 or CA2 preamp the SCM20AT will out perform any other combination in its price range any many costing far more.

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SCM20SL Specifications

Drivers HF 25mm Neodynium, Mid/LF 75/150mm
Matched Response +/- 0.5dB
Frequency Response (-6dB) 60Hz-20kHz
Dispersion ±80° Coherent Horizontal, ±10° Coherent Vertical
Max SPL 108dB
Recommended Power Amplifier 50 to 300 Watts
Crossover Frequency 2.8kHz
Connectors bi-wire posts
Cabinet Dimensions (HxWxD) 440 x 239 x 333mm
Weight 22.7kg

Pro Audio SCM20 Review

"In this day of active monitors, it’s nice to see and hear a well-designed passive speaker for those of us who swear by separates. It is very accurate, images well and does not hurt your ears when cranked up. The ATC Passive 20s are not cheap, but really good things in life usually aren’t. Highly recommended."
Pro Audio Review