ATC SCM45A Pro – Professional 3-Way Reference-Grade Studio Monitor

The ATC SCM45A Pro is a mid-sized active studio monitor engineered for critical audio applications that demand absolute precision. Handcrafted in the UK by ATC Loudspeakers, it delivers exceptional linearity, wide dispersion, and impressive acoustic output. Designed for recording studios, mix engineers, and mastering professionals, it offers detailed and neutral sound reproduction for reliable monitoring at every stage of production.

Product Features

• Three-way design with individual amplifiers for each frequency band.
• Hand-built ATC drivers: 25 mm tweeter, 75 mm soft dome midrange, dual 164 mm bass drivers.
• MOSFET Class A/B tri-amplifier system with a total output of 235 W (150 W LF, 60 W MF, 25 W HF).
• Wide and stable frequency response: 42 Hz – 25 kHz (–6 dB), with ±2 dB linearity from 70 Hz to 17 kHz.
• Consistent dispersion: ±80° horizontal, ±10° vertical – ideal for precise imaging.
• Overload protection with active gain reduction circuit (FET-based).
• Adjustable input sensitivity and low-frequency boost on the rear panel.

Advanced Audio Engineering Without Compromise

The SCM45A Pro merges high-end audio technology with meticulous craftsmanship. Its hand-built soft dome and carbon paper cone drivers produce ultra-low distortion, clear dynamics, and accurate transients. External heat sinks and high-grade internal components ensure long-term reliability under professional use. The MOSFET Class A/B amplifier delivers deep, controlled low-end and expansive stereo imaging — making it ideal for mix translation and reference-level work.

Use Cases

• Nearfield and midfield monitoring in professional studios.
• LCR monitoring setups and surround channels in medium to large control rooms.
• Music production, post-production, and broadcast environments.
• Mastering applications requiring absolute sonic neutrality.

Technical Specifications

• Driver types: 25 mm tweeter, 75 mm midrange dome, 2 x 164 mm woofers.
• Frequency response: 42 Hz – 25 kHz (–6 dB), ±2 dB from 70 Hz to 17 kHz.
• Dispersion: ±80° horizontal, ±10° vertical.
• Input sensitivity: 1 V RMS, adjustable from 0 dB to -6 dB.
• Input impedance: >10 kΩ balanced.
• Amplifiers: 150 W (LF), 60 W (MF), 25 W (HF), MOSFET Class A/B.
• Crossover frequencies: 380 Hz, 3.5 kHz (fourth-order filters, phase compensated).
• Dimensions: 353 x 600 x 375 mm.
• Weight: 36 kg.

Materials and Construction

The cabinet is designed to minimize resonance and maximize structural rigidity. Internal bracing and dense MDF panels provide acoustic stability. Rear panel controls include input gain and LF boost. All electronic components, including the power supply and amplifier boards, are of premium quality for extended life and consistent performance.

Included in the Box

• ATC SCM45A Pro studio monitor (1 unit)
• Power cable
• User manual (PDF format)
• Manufacturer warranty card

Summary – A Tool for Audio Professionals

ATC SCM45A Pro is built for professionals who demand precision, clarity, and reliability. With outstanding linearity, wide frequency range, and solid build quality, this monitor is a go-to solution for high-end studios, post-production, and mastering environments. It's a long-term investment in uncompromised sound and engineering excellence.