ATC SCM300ASL Pro (Pair)

The SCM300A Pro uses twin 375mm (15″) LF drivers for effortless delivery of the highest sound pressure levels, with exceptional bass handling.


The ATC SCM300ASL Pro is an active, freestanding 3-way professional reference monitor suitable for use in larger studios.
Talk about power, with the ATC SCM300ASL Pro you won’t need to – it has it all. From the twin 15″ ATC SL bass drivers, the 75mm Super Dome mid and the 34mm soft-dome tweeter you will find all the power that you need in the 300 litre cabinet. All driven along nicely by the highly-acclaimed 5U rack-mounted ATC P4 amp to get you thunderous bass, informative mids and tinkling trebles – from a whisper to a roar, you won’t need any more than the SCM300ASL Pro. You also get fabulously detailed and precise sound reproduction with the ATC SCM300ASL Pro – so that you know immediately when something sounds good or if it needs further work.
Able to operate at high spl for long periods, the ATC SCM300ASL Pro can do it without wearing out your hearing too. ATC has made it their business to know how to get the best sound from what is available – by putting its technical know-how together with the best materials available it has gone from the Acoustic Transducer Company supplying speakers to the PAs of the world to ATC, developing the best reference monitors available, like the SCM300ASL Pro.
If you need a professional-standard monitor, then get in touch with the professional standards that ATC employs to build the ATC SCM300ASL Pro and you’ll find yourselves nicely in tune.

Technical Specifications:
Drivers: HF 34mm, Mid 75mm, LF 2 x 375mm
Amplitude Linearity (±2dB): 50Hz-12kHz
Cut-off Frequencies (-6dB): 25Hz, 20kHz (free standing) 20Hz, 20kHz (soffit mounted)
Horizontal Dispersion: ±80°, Coherent
Vertical Dispersion: ±10°, Coherent
Max. Continuous SPL (1 metre): 121dB
Crossover Frequencies: 380Hz, 3.5kHz
Input Connectors: Male XLR
Input Sensitivity: 2V
Input Impedance: Balanced > 10kΩ
Amplifier Output: Bass 275+275W, Mid 200W, High 100W
Filters: Even Order Critically Damped
Overload Protection: Active FET momentary gain reduction plus thermal tweeter protection
Front Panel Indicators: Power On indicator, Gain Reduction warning
Dimensions (HxWxD): 884 x 925 x 460mm (34.8˝ x 36.4˝ x 18.7˝)
Weight: 140kg / 308lbs (Stands not included)

ATC SCM300ASL Pro Overview:

34mm soft dome tweeter
Twin full spec “SL” 15˝/375mm bass drivers
ATC 75mm “Super Dome” mid driver
Rack-mount P4 4 – way grounded source 850W amplifier
Clip indication
6 year warranty
Made in UK

Please note, we are not able to ship ATC speakers outside of the UK



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