ATC SCM45A PRO

ATC SCM45A Pro – Mid-size, 3-way active studio monitor with 6.5″ carbon-paper LF driver, 3″ soft-dome mid, 1″ Dual-Suspension S-Spec tweeter, and discrete MOSFET Class A/B tri-amp (150/60/25 W) for critical near-field and LCR surround monitoring.

The SCM45A Pro delivers ATC’s renowned transparency and low distortion in a compact cabinet ideally suited to medium control rooms and surround arrays. Its hand-built 164 mm carbon-paper cone bass driver and precision crossover with 4th-order filters ensure a flat 42 Hz–25 kHz response (±2 dB), while user-adjustable LF boost and input trim allow room and source matching. With coherent ±80° horizontal dispersion and 112 dB SPL capability, it brings effortless clarity and dynamics to any professional setup.

KEY FEATURES

• 3-way active monitor with tri-amp Class A/B (150 W LF, 60 W MF, 25 W HF)
• LF: 164 mm (6.5″) carbon-paper cone driver
• MF: 75 mm (3″) soft-dome driver
• HF: 25 mm (1″) Dual-Suspension “S-Spec” tweeter
• Flat response 42 Hz–25 kHz (–6 dB) with ±2 dB linearity (70 Hz–17 kHz)
• Coherent dispersion: ±80° horizontal, ±10° vertical
• Max continuous SPL: 112 dB @1 m
• User-adjustable LF boost (0 to +3 dB @40 Hz) and input sensitivity trim (0 to –6 dB)
• Active FET overload protection

TECHNICAL SPECIFICATIONS

• Drivers:
  • LF: 164 mm carbon-paper cone
  • MF: 75 mm soft-dome
  • HF: 25 mm Dual-Suspension S-Spec tweeter
• Amplifiers: 150 W LF, 60 W MF, 25 W HF (MOSFET Class A/B)
• Crossover frequencies: 380 Hz & 3.5 kHz (4th-order, phase-compensated)
• Inputs: XLR balanced (> 10 kΩ); sensitivity 1 V RMS (trim –6 dB to 0 dB)
• LF boost: continuously variable 0 to +3 dB @40 Hz
• Overload protection: active FET momentary gain reduction
• Dimensions (H×W×D): 353 × 600 × 375 mm (handles +39 mm depth)
• Weight: 36 kg per cabinet