The SCM150ASL Pro is a further development of the SCM100ASL Pro 3-Way active monitor, substituting a larger 375mm Super Linear bass driver, and increasing the enclosure size to 150 litres. The result is extended bass, greater headroom, and even more dynamic range.

“OK, so after 6 months of ownership, I’m happy to report that I love my ATC’s. They’re one of the best mix tools I have. They’re not my only speakers but they could be if need be, and I’m constantly impressed by the detail and the way they translate.

They make the big stuff bang and they make the small stuff easy to pick out. During the mix for Shania’s new single, she was requesting minute tweaks that we could have easily missed on other speakers- they were obvious on the ATC’s.

I’ve spent years trying all sorts of gear in what will probably be a never-ending quest to improve the quality of my work. After living with these ATC SCM150Pro monitors, I’ve stopped looking for better speakers.”

F. Reid Shippen


Technical Documents:

Remote Amplifier Tech Note

Dual Amp Pack Remote Hardware


Max Continuous SPL: 117dB
ATC Tri-Power: 1@200W/1@100W/1@50W per speaker
ATC custom built internal amplifiers
Crossovers: 380Hz, 3.5kHz; 4th order; active, internal
Low: Single 15" ATC custom built SL driver
Mid: Single 3" ATC custom SL dome, wave guide loaded
Hi: Single 1" dome tweeter, wave guide loaded
Tweeter movable for horizontal mounting
Wood/Black Ash cabinet
Actual H/W/D in inches: 34.8/19.6/22.4
Actual Weight: 160.6lbs
Shipping Weight: 225lbs in crate
Shipping dims: 40"x28"x33"
(Speaker stand not included)