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Designed for positioning on a meter bridge or rack-mountable for broadcast applications, the ATC SCM25A Pro offers very high-performance in the most compact possible form factor.

The SCM25A Pro incorporates ATC's proprietary short coil seven-inch carbon-paper woofer, a three-inch soft dome midrange driver and a one-inch silk dome tweeter in a ported enclosure that measures 10.4 inches (264 mm) (H) x 16.9 inches (430 mm) (W) x 16 inches (408 mm) (D). The integrated tri-amplifier generates 150 W RMS for the woofer, 50 W RMS for the midrange and 25 W RMS for the tweeter. The passively cooled amp pack also features FET limiting. The crossovers are all 4th order, critically damped with phase compensation.

The SCM25A Pro produces a wide, stable soundfield with very low coloration and offers low frequency extension to 42 Hz (-6dB).


  • 25mm neodymium soft dome tweeter.
  • ATC hand built 3/75mm soft dome mid driver.
  • ATC hand built 7/175mm carbon-paper cone bass driver.
  • On-board grounded source 235W class A/B 3-way amplifier.
  • Compact size with high output and low cut-off frequency.
  • 19 rack mountable.
  • Specifications

    Drivers: HF 25mm soft dome, Mid 75mm soft dome, LF 164mm short-coil carbon paper cone
    Amplitude Linearity (±2dB): 74Hz-17kHz
    Cut-off Frequencies (-6dB, free-standing): 47Hz-22kHz
    Dispersion: ±80° Coherent Horizontal, ±10° Coherent Vertical
    Max. Continuous SPL (1 metre): 109dB
    Audio Input: Rear panel mounted female xlr (pin 2 +)
    Input Sensitivity: 1V rms (ref. full output)
    Input Sensitivity Trim: 0dB to -6dB/1V - 2V (continuously variable via rear panel trimmer)
    Input Impedance: Balanced > 10k
    Amplifier Output Power: Bass 150W rms, Mid 60W rms, High 25W rms
    Crossover Frequencies: 380Hz & 3.5Khz
    Crossover Filters: 4th order critically damped with phase compensations
    Low Frequency Boost: 0dB to +3dB at 40Hz (continuously variable via rear panel trimmer)
    Overload Protection: Active FET momentary gain reduction
    Dimensions (HxWxD): 264 x 430 x 369mm (10.4 x 16.9 x 14.5). Handles add an 39mm/1.5 to depth.
    Weight: 30kg / 66lbs (per cabinet)
    Manufacturer Part Number : SCM25APRO


    November 4, 2020
    Easily the best loudspeakers I've had in my studio.
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