ATC SCM150 ASL Loudspeakers


ATC SCM 150 ASL (Active) Speakers

ATC Speakers and Hifi components are now available in Queensland and Northern NSW. Please call Terry at GC HiFi on 0419448452 to discuss options or to arrange a private listening session of the various ATC speakers we have in our demo list.


ATC speakers are now available for audition on the Gold Coast, please contact us to arrange a private listening session.

Both the SCM150 ASL (active) and SCM150 SL (passive) are designed to perform at their best with the finest quality hi-fi equipment.

Like their smaller brother, the SCM50 ASL & 100 the monitors’ ability to reproduce music and speech with phenomenal accuracy, transparency and dynamics lies mainly in the SM75-150s soft dome midrange driver. However, recent modifications that include an upgraded tweeter and enhanced port profile have brought about further improvements in all performance parameters.

Bass performance is equally impressive, thanks to ATC’s 15″ professional level bass driver that incorporates the company’s unique Super Linear Magnet technology. Bass, mid and HF drive units in the active model have their own dedicated and individually matched MOS-FET amplifiers.

ATC’s active crossover network consists of a wide band-width, electronically balanced input stage with high common mode rejection and very low distortion.

In passive form, the SCM150 SL provides broad and symmetrical dispersion, excellent amplitude and phase characteristics throughout the audio frequency range.

ATC speakers are available in various veneers and finishes, please contact us to find out what options are available for this model.

Specifications: SCM150 ASL (Active)

Drivers: HF 25mm Mid 75mm LF 375mm Super Linear

Amplitude Linearity ±2dB: 60Hz – 17kHz

Frequency Response -6dB: 25Hz & 22kHz

Matched Response: ±0.5dB

Dispersion: ±80° Coherent Horizontal ±10° Coherent Vertical

Max continuous SPL @1m: 117dB SPL

Crossover Frequency: 380Hz & 3.5kHz

Input Connector: XLR

Input Sensitivity: 1V

Input Impedance: >10k ohms balanced XLR

Amplifier Output: HF 50 Watts RMS MF 100 Watts RMS LF 200 Watts RMS

Overload Protection: LDR tweeter protection, plus active FET MGR (amplifiers)

Power Requirements: Voltage: 100, 115, 230 (factory set)

Frequency: 50/60Hz

Power: Nominal 90 Watts, Driven 350 Watts

Cabinet Dimensions(HxWxD): 884 x 498 x 568mm including amps (stands add 200mm to height)

Weight: 75kg


Soft Dome Mid-Range

There are few engineering developments in any field that have effected change to the extent that ATC’s Soft Dome Midrange has on the monitoring of sound and particularly of music and voice. First produced in 1976 ATC’s soft dome represents the very best of midrange loudspeaker design and performance combining a smooth response from 350Hz to 3.5KHz, exceptionally low colouration, high power handling capacity, low power compression and high output level.

This performance is achieved in ATC’s soft dome drive unit by having a very linear low distortion drive system comprising a 75mm diameter short coil operating in a long magnet gap supported on 2 suspensions to guarantee controlled coil movement, maintain concentricity with the very tight gap-coil clearances and also ensure excellent heat dissipation and power handling. The magnet gap is also in a magnetic circuit that is saturated and therefore not affected by the non-linearity due to hysteresis of the steel used in the magnetic assembly. The dome diaphragm, driven at its edge by the coil-former assembly, is a soft woven fabric impregnated with a viscous damping medium to attenuate unwanted resonances and ensure a smooth response with very low audible colouration. The response of the soft dome diaphragm is further improved by mounting it in a phase correction flange the profile of which is a mirror image of the dome. All of these elements combine to produce a midrange driver of exceptional fidelity and neutrality.

ATC’s soft dome midrange is a common element in all ATC three way systems ensuring consistency between models and the best performance money can buy.