Description

The smallest details in a mix often have the biggest impact on how a production translates beyond the studio. The ATC SCM20A Pro studio monitor pair is a compact powered monitoring system designed to reveal those details with the precision, dynamic range and low distortion that have made ATC a benchmark in professional monitoring. Built around ATC’s proprietary 6.5" Super Linear bass driver, SH25-76S dual-suspension soft-dome tweeter and a dedicated 200W/50W discrete MOSFET Class A/B bi-amplification system, the SCM20A Pro delivers exceptional midrange accuracy, controlled low-frequency performance and wide, coherent dispersion. Equally suited to critical nearfield monitoring, LCR applications and surround systems, it provides the level of transparency required for confident professional decision-making.

ATC Driver Technology and Reference-Grade Accuracy

At the core of the SCM20A Pro are two proprietary ATC drive units engineered for low distortion and exceptional linearity. The 6.5" Super Linear bass driver utilizes a massive 3" voice coil and ATC’s renowned motor design to maintain control and accuracy even at demanding playback levels. Complementing it is the SH25-76S dual-suspension soft-dome tweeter, designed to deliver detailed high-frequency reproduction while maintaining smooth dispersion and long-term consistency. Together, these components create an exceptionally balanced presentation with accurate tonal response from 80Hz–20kHz within a remarkably compact enclosure.

Active Bi-Amplification for Dynamic Monitoring

The SCM20A Pro features ATC’s discrete MOSFET Class A/B active amplification platform, providing dedicated power for both low- and high-frequency drivers. With 200W driving the bass section and 50W dedicated to the tweeter, the monitor delivers excellent transient response, headroom and dynamic control without strain. Critically damped crossover filters and phase compensation help preserve coherence across the frequency spectrum, while ATC’s active FET overload protection maintains system integrity during demanding sessions. The result is a monitoring system capable of producing substantial output while retaining the clarity, balance and precision required for critical listening.

Built for Professional Control Rooms

Designed and manufactured to the exacting standards that define the ATC name, the SCM20A Pro is equally at home as a primary nearfield monitoring system, an LCR solution in surround environments or a surround channel within larger immersive systems. Wide horizontal dispersion helps create a stable stereo image, while controlled vertical dispersion minimizes unwanted room interactions. Rear-panel sensitivity adjustment and low-frequency shelf controls allow precise integration into a variety of control rooms and monitoring environments. Backed by ATC’s reputation for engineering excellence, the SCM20A Pro studio monitor pair delivers the accuracy, reliability and translation demanded by professional studios around the world.

ATC SCM20A Pro 6.5" Powered Studio Monitor Pair

Features

  • Powered studio monitor pair delivers analytical detail for critical nearfield mixing
  • 6.5" Super Linear bass driver provides accurate midrange and low distortion
  • 1" dual-suspension soft-dome tweeter reveals subtle high-frequency detail
  • Class A/B bi-amplification delivers clean headroom and dynamic control
  • Amplitude linearity of ±2dB from 80Hz–20kHz supports accurate mix translation
  • Active FET overload protection maintains performance during demanding sessions
  • Input sensitivity trim enables precise gain matching with studio interfaces
  • Wide dispersion promotes stable imaging across the listening position
  • Designed for nearfield, LCR and surround monitoring applications

Specs

General
  • Product type: Powered 2-way studio monitor pair
  • Model: SCM20A Pro
Drivers
  • LF driver: 6.5" (15 0mm) ATC Super Linear driver with 3" (75 mm) voice coil
  • HF driver: 1" (25 mm) ATC SH25-76S dual suspension soft dome tweeter
Acoustic Performance
  • Frequency response (±2dB): 80Hz–20kHz
  • Cutoff frequencies (-6dB): 55Hz–25kHz
  • Maximum continuous SPL: 108dB @ 1m
  • Crossover frequency: 2.1kHz (2.2kHz nominal)
Dispersion
  • Horizontal dispersion: ±80° coherent
  • Vertical dispersion: ±10° coherent
Amplification
  • Amplifier type: Discrete MOSFET Class A/B bi-amplification
  • LF amplifier power: 200W continuous
  • HF amplifier power: 50W continuous
  • Crossover type: 2nd-order critically damped with phase compensation
Inputs
  • Audio input: Female XLR (pin 2 hot)
  • Input impedance: >10 kohm balanced
  • Input sensitivity: 1V RMS
  • Input sensitivity trim: 0dB to -6dB
Controls
  • Low-frequency shelf EQ: 80Hz, -2dB to +3dB in 1dB steps
Protection
  • Overload protection: Active FET momentary gain reduction
  • Thermal protection: Amplifier thermal trip circuit
Indicators
  • Power indicator: Yes
  • Limit indicator: Yes
Electronic Performance
  • LF amplifier THD: 0.0006% @ 100Hz
  • HF amplifier THD: 0.0022% @ 10kHz
  • Signal-to-noise ratio (LF): 112dBA
  • Signal-to-noise ratio (HF): 109dBA
Power Requirements
  • Mains voltage: 100V / 115V / 230V, 50/60Hz
  • Power consumption (idle): 55VA
  • Power consumption (1/8 power): 161VA
  • Power consumption (max): 375VA
Applications
  • Critical nearfield monitoring
  • LCR surround monitoring
  • Surround channels for medium-to-large control rooms
Dimensions
  • Dimensions: 17.72" × 9.84" × 15.43"
  • Weight: 51.6 lb. (23.4 kg) per speaker
Optional Accessories
  • K&M 24120 wall mount (cabinet modification required)

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