ATC SCM25A Pro Mk2

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ATC Loudspeakers SCM25A Pro Mk2

Compact, high-end, 3-way studio monitor.

The ATC SCM25A Pro Mk2 is a highly efficient, compact, 3-way active studio loudspeaker, built around a 6.5" woofer housed in a 25-liter vented enclosure. The combination of exceptional mid-frequency precision, high power handling, extended low frequency response and compact size makes the monitor ideal for close-field listening in the most demanding applications.

This 3-way studio monitor uses unique drivers designed and manufactured by ATC. A 6.5 "bass driver is responsible for the low frequencies below 380Hz, while the midrange between 380Hz and 3.5kHz is entrusted to a 3" soft-dome driver. High frequencies above 3.5kHz are handled by a 1" ATC SH25-76S Dual-Suspension soft-dome driver. The improved HF driver is a major improvement over the Mk1 model. The bass reflex enclosure, is tuned to 32Hz and features a 3" diameter port with an extended input and output to minimize port air noise.

The SCM25A Pro Mk2 is actively driven by a 3-channel Class A/B amplifier mounted in the rear of the cabinet. Each driver has its own dedicated power amplifier. Audio input is realized on a 3-pin female XLR socket mounted on the rear panel, while power is an IEC mains socket. The user can adjust the input sensitivity and lower band boost. The Linkwitz-Riley fourth-order crossovers and all-pass filters used optimize phase response at the dividing points, improving tonal accuracy, stereo imaging and both on- and off-axis frequency response. The SCM25 listening monitors use FET limiters to reduce hard-clipping. Power on and active limiter are indicated by a two-color LED on the front panel.

Key features:

  • 3-way design that zwierać ATC SM75-150 Soft Dome driver in MF section
  • Wide dispersion in the stoddard of the frequency response provides an excellent stereo image in a large part of the listening room
  • ATC Class A/B amplifiers based on discrete MOSFETs guarantee high dynamic range combined with negligible distortion and extended high frequency response
  • Active 4th order crossover with phase compensation through all-pass filters provides unparalleled driver matching
  • Control of input sensitivity and low frequency boost
  • Hand-built in England covered by a 6-year warranty

Acoustic Specifications:

  • LF: 1 x SB50-164SC 8Ω
  • Mid: 1 x SM75-150 16Ω
  • HF: 1 x SH25-76S 6Ω Compact
  • Low frequency cutoff: 47Hz (-6dB).
  • High frequency cutoff: 25kHz (-6dB).
  • Max SPL: 109dB continuous/ 115dB peak (Measured for a pair of monitors, IEC Weighted Pink Noise, 1m).
  • Sensitivity: +4dBu ref 92dBC (Low band boost 0dB, Input sensitivity 1V, Pink noise).

Electronic specification:

  • Symmetrical input: 1 x Rear panel mounted female XLR socket, pin 2 hot.
  • Input impedance: 20kΩ.
  • Input CMRR: >82dB (10kHz).
  • Input sensitivity control: stepless variable from 2.2dBu - 8.2dBu / 1Vrms - 2Vrms (-6dB)
  • Lower band boost control: infinitely variable from 0dB to +3dB.
  • Crossover: Linkwitz-Riley 4th order, 380Hz and 3.5kHz division frequencies.
  • Frequency response: 200kHz (-3dB).
  • Amplifier: class A/B MOSFET
  • Amplifier power: LF 150W (8Ω), MF 60W (8Ω), HF 32W (6Ω)
  • THD+N: <0.003%/-92dB (1kHz, 1dB below rated power, 90kHz BW)
  • Limiter: ATC Active FET Momentary Gain Reduction, limiter operation indicated by LED on front panel
  • Power supply: 220-230V or 115V
  • Power consumption: inactive 24W/35VA. 1/8 power 117W/159VA. full power 255W/324VA.
  • Heat generated: inactive 82BTU/hr. 1/8 power 335 BTU/hr. full power 358BTU/hr.
  • Net weight: 25.1kg
  • Dimensions: 271 x 430 x 411mm (H x W x D)
  • Weight with packaging: 28.15kg
  • Package dimensions: 370 x 560 x 510mm (H x W x D)
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