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Professional three way active monitor with dual Short Coil 6.5" low frequency driver and 235W tri-amp pack, designed for near-field or mid-field positions

The SMC45A Pro, ATC's mid-sized three-way active loudspeaker in the SCM range, can be placed in both near- or mid-field positions. It shares many features with the SMC25A Pro, and completes ATC's professional active monitoring loudspeaker range. Producing an excelent linear response across the midrange, the 45A's design includes a second woofer for an extended bass response and increased SPL (Sound Pressure Level) capability, The proprietary dual-suspension tweeter that creates the high top-end resolution is the result of six years of research and development by ATC Managing Director Billy Woodman and R&D Engineer Richard Newman.
  • Mid-size very high performance active 3-way studio monitor
  • Ideally suited to:
  • Critical near-field listening applications in all control rooms
  • LCR surround monitoring in medium control rooms
  • Surround channels in medium-to-large contol rooms
  • ATC hand built 6.5/164mm carbon-paper cone bass driver.
  • ATC 25mm/1" Dual Suspension Super Tweeter
  • Discrete MOSFET class A/B bi-amp pack with 150W/60W/25W continuous power output
  • Drivers: HF 1/25mm soft dome, Mid 3/75mm Soft Dome, LF 6.5/164mm short-coil carbon paper cone
    Amplitude Linearity (±2dB): 70Hz-17kHz
    Cut-off Frequencies (-6dB, free-standing): 42Hz-25kHz
    Dispersion: ±80° Coherent Horizontal, ±10° Coherent Vertical
    Max. Continuous SPL (1 metre): 112dB
    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): 353 x 600 x 375mm (13.9 x 23.6 x 14.8). Handles add an additional 39mm/1.5 to depth.
    Weight: 36kg / 79.2lbs (per cabinet)
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