Description

Every mix decision depends on what your monitors reveal—and what they don't. The ATC SCM45A Pro studio monitor pair is a high-performance powered 3-way monitoring system designed to deliver the exceptional transparency, dynamic range and translation accuracy demanded by professional engineers, producers and mixers. The ATC SCM45A Pro studio monitor pair is a high-performance active 3-way monitoring system designed to deliver the exceptional transparency, dynamic range and translation accuracy demanded by professional engineers, producers and mixers. Built around ATC’s renowned 3" soft-dome midrange driver, dual 6.5" hand-built bass drivers and the latest SH25-76S dual-suspension tweeter, the SCM45A Pro combines wide dispersion, impressive low-frequency extension and remarkably low distortion in a compact midfield format. Equally at home as a primary stereo monitoring system, LCR system or surround channel solution, it provides the precision required for critical listening across modern music, broadcast and immersive audio production environments.

Three-Way Design With Legendary ATC Midrange Performance

At the center of the SCM45A Pro is ATC’s celebrated SM75-150 soft-dome midrange driver, widely regarded as one of the most accurate and revealing midrange transducers available. By dedicating an entire driver to the frequencies where vocals, instruments and mix-defining details reside, the SCM45A Pro delivers exceptional clarity and tonal separation. Dual 6.5" carbon-paper bass drivers provide deep, controlled low-frequency performance down to 42Hz, while the updated SH25-76S dual-suspension tweeter extends high-frequency detail with improved linearity and reduced distortion. Together, the three-way design delivers outstanding balance, imaging and translation accuracy across the entire frequency spectrum.

Active Tri-Amplification and High Dynamic Capability

The SCM45A Pro incorporates a discrete MOSFET Class A/B tri-amplification system that provides dedicated power to each driver for maximum control and efficiency. With 150W driving the bass section, 60W dedicated to the midrange and 25W powering the tweeter, the monitor delivers impressive headroom and dynamic range while maintaining low distortion at professional monitoring levels. Fourth-order critically damped crossover networks with phase compensation ensure seamless driver integration and coherent imaging throughout the listening area. The result is a monitoring system capable of exposing subtle mix details while retaining the scale and impact needed for modern production work.

Built for Professional Control Rooms and Long-Term Reliability

Hand-built to ATC’s exacting standards, the SCM45A Pro is designed for years of dependable service in demanding studio environments. Wide horizontal dispersion creates a stable stereo image across a generous listening area, while controlled vertical dispersion helps minimize unwanted room interactions. User-adjustable input sensitivity and low-frequency lift controls allow fine-tuning to suit different control rooms and monitoring preferences. Backed by a six-year warranty and ATC’s longstanding reputation for uncompromising engineering, the SCM45A Pro studio monitor pair delivers the accuracy, consistency and confidence required by today’s most demanding professional studios.

ATC SCM45A Pro 6.5" Powered Studio Monitor Pair

Features

  • Three-way powered studio monitor pair engineered for precise critical mix decisions
  • Dual 6.5" carbon-paper bass drivers deliver extended low-frequency accuracy
  • Hand-built 3" soft-dome midrange driver reveals critical mix detail and balance
  • 1" dual-suspension tweeter provides smooth, accurate high-frequency reproduction
  • Class A/B tri-amplification delivers 235W of dynamic headroom and control
  • Amplitude linearity of ±2dB from 70Hz–17kHz supports balanced reference monitoring
  • Variable low-frequency lift helps optimize performance for room acoustics
  • Active FET overload protection maintains clean output during demanding sessions
  • Input sensitivity trim enables precise gain matching with professional interfaces
  • Ideal for stereo, LCR and immersive audio monitoring applications

Specs

General
  • Product type: Powered 3-way studio monitor pair
  • Model: SCM45A Pro
Drivers
  • LF drivers: 2 × 6.5" (164 mm) ATC SB50-154SC carbon-paper cone drivers
  • MF driver: 1 × 3" (75 mm) ATC SM75-150 soft dome midrange
  • HF driver: 1 × 1" (25 mm) ATC SH25-76S dual-suspension tweeter
Acoustic Performance
  • Frequency response (±2dB): 70Hz–17kHz
  • Cutoff frequencies (-6dB): 42Hz–25kHz
  • Maximum continuous SPL: 112dB @ 3.2'
Dispersion
  • Horizontal dispersion: ±80° coherent
  • Vertical dispersion: ±10° coherent
Amplification
  • Amplifier type: Discrete MOSFET Class A/B tri-amplification
  • LF amplifier power: 150W RMS
  • MF amplifier power: 60W RMS
  • HF amplifier power: 25W RMS
  • Total amplifier power: 235W RMS
Inputs
  • Audio input: Female XLR (pin 2 hot)
  • Input impedance: >20 kohm balanced
  • Input sensitivity: 1V RMS (full output reference)
  • Input sensitivity trim: 0dB to -6dB (1V–2V)
Controls
  • Low-frequency boost: 0dB to +3dB at 40Hz
Crossover
  • Crossover frequencies: 380Hz and 3.5kHz
  • Crossover type: 4th-order critically damped with phase compensation
Protection
  • Overload protection: Active FET momentary gain reduction
Power Requirements
  • Mains voltage: 100V, 115V, or 230V, 50/60Hz
Power Consumption
  • Idle: 24W / 35VA
  • 1/8 power: 117W / 159VA
  • Full power: 255W / 324VA
Heat Output
  • Idle: 82 BTU/hr
  • 1/8 power: 335 BTU/hr
  • Full power: 358 BTU/hr
Applications
  • Critical nearfield monitoring
  • LCR surround monitoring
  • Surround monitoring for medium-to-large control rooms
Construction
  • Cabinet type: Active 3-way enclosure
  • Manufactured: Hand-built by ATC
Dimensions
  • Dimensions: 13.9" × 23.6" × 14.8"
  • Additional depth with handles: +1.5" (39 mm)
  • Weight: 79.2 lb. (36 kg) per speaker
Warranty
  • Warranty: 6 years

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