Essential Information About the ATC SCM50A SL Pro Studio Monitor
- Reference ATC Transducers: 25 mm "S-Spec" double suspension tweeter, 75 mm "Super Dome" midrange, and 234 mm "SL" woofer for exemplary accuracy across the entire spectrum.
- Factory-optimized 350 W Tri-amplification (200 W LF, 100 W MF, 50 W HF) with frequency, gain, and phase corrections for remarkable temporal coherence.
- Built-in Adjustments: LF equalization from 0 to +6 dB at 40 Hz and "Input Trim" from 0 to -6 dB (1 to 2 V) to tailor the bass level and foundation to your room.
- Controlled Directivity and High Output: horizontal dispersion +/-80deg, vertical +/-10deg, and 112 dB SPL continuous at 1 m for nearfield or midfield monitoring.
An Icon of the SCM Series, Balancing Precision and Durability
Part of the ATC SCM25/45/50/100/110/150 family, the SCM50A SL Pro stands as a reference active 3-way monitor. In ATC nomenclature, "A" indicates integrated active amplification and "SL" denotes the "Super Linear" woofer technology designed to reduce distortion. When models in the range exist in passive versions, they feature a "three-wire" connection panel for separate amplification per driver; here, the "A" version consolidates all ATC expertise into a factory-calibrated active unit.
Who Is It For and What Are Its Uses?
The SCM50A SL Pro is aimed at mixing, mastering, post-production, and broadcast studios demanding a stable stereo image, linear frequency response, and reliable dynamics at high levels. Its controlled directivity makes it a safe choice in treated control rooms for extended nearfield or midfield listening.
Key Features for Uncompromising Listening
Its 3-way architecture incorporates "Even Order Critically Damped" active filters and dedicated amplifiers for each transducer, ensuring smooth transitions at crossover frequencies (380 Hz and 3.5 kHz) and low distortion. Rear panel adjustments simplify integration: "Input Sensitivity" at 1 V, continuous "Trim" from 0 to -6 dB (1-2 V), and "LF EQ" from 0 to +6 dB at 40 Hz to adapt bass to the room. A distortion indicator and front panel LEDs (power, gain reduction) secure your high-level sessions.
Technical Specifications
Transducers and Architecture
- ATC "S-Spec" double suspension tweeter: 25 mm / 1"
- ATC "Super Dome" midrange: 75 mm / 3"
- "SL" woofer: 234 mm / 9"
- Active 3-way configuration
Amplification and Filtering
- Total tri-amplified power: 350 W (LF 200 W, MF 100 W, HF 50 W)
- "Even Order Critically Damped" active filters
- Crossover frequencies: 380 Hz, 3.5 kHz
- Individual factory optimization: frequency, gain, and phase corrections
Response, Dispersion, and Level
- Linear amplitude (+/-2 dB): 70 Hz - 17 kHz
- -6 dB points (on stand): 38 Hz and 22 kHz
- Horizontal dispersion: +/-80deg, coherent
- Vertical dispersion: +/-10deg, coherent
- Max continuous SPL (1 m): 112 dB
Connections and Controls
- Audio input: Male XLR, balanced
- Input impedance: balanced, > 10 k ohms
- Input sensitivity: 1 V
- "Trim" sensitivity: 0 dB to -6 dB / 1 V - 2 V (continuous adjustment on rear panel)
- LF EQ: 0 dB to +6 dB @ 40 Hz (continuous adjustment on rear panel)
Protection and Indicators
- Overload protection: momentary gain reduction (FET)
- Tweeter thermal protection
- Front panel indicators: power LED and gain reduction LED
- Distortion indicator
Dimensions and Weight
- Dimensions (H x W x D): 716 x 351 x 400 mm (28.2" x 13.8" x 18.8")
- Rear amplifier adds approximately 3" to depth
- Weight: 49 kg / 107.8 lb
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