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ATC SCM25a Pair

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SCM25A-PRO - 3-Way Active Loudspeaker

The SCM25A is ATC's first compact 3-way active studio monitor loudspeaker. The loudspeaker aims to bring the performance of ATC's well know larger models to a compact package, better suited to the smaller control room, production or broadcast suite. The drive units all use large diameter, under-hung voice coils for excellent dynamic range and linearity. The mid-range dome is the company's world renowned soft dome, and the bass driver is a hand built, in house, using a carbon-paper cone with high excursion capability. On-board amplification is constructed around the company's class A/B Mosfet output stage delivering 150W to the bass driver, 60W to the mid and 25W to the high frequency driver, with all three stages fed by 4th order critically damped crossover filters with phase compensation. An added feature of the compact design is that it can be rack mounted using an optional rack mounting kit, making it ideally suited to broadcast and outside broadcast applications.


- 25mm soft dome tweeter.
- ATC hand built 2"/75mm soft dome mid driver
- ATC hand built 7"/175mm carbon-paper cone bass driver
- On board 235W class A/B three channel amplifier
- Compact size with high output and low cut-off frequency
- 19" rack mountable
- 6 year warranty.

Technical Specifications

- Drivers: HF 25mm soft dome, Mid 75mm soft dome, LF 175mm short-coil carbon paper cone
- Amplitude Linearity (+/-2dB): 74Hz-17kHz
- Cut-off Frequencies (-6dB, free-standing): 47Hz - 22kHz
- Horizontal Dispersion: +/-80°, Coherent
- Vertical Dispersion: +/-10°, Coherent
- Max. Continuous SPL (1 m): 109dB
- Audio Input: female XLR
- Input Sensitivity: 1V rms (ref. full output)
- Input Sensitivity Trim: 0dB to -6dB
- Input Impedance: Balanced > 10kOhms
- Amplifier Output Power: Bass 150W rms, Mid 60W rms, High 25W rms
- Crossover Frequencies: 380Hz & 3.5Khz
- Crossover Filters: 4th order
- Low Frequency Boost: 0dB to +3dB at 40Hz
- Overload Protection: Active FET momentary gain reduction
- Mains Power Requirements: 115/230V, 50/60Hz
- Mains Power Consumption: 56VA (standby) 154VA (typical) 375VA (max)
- Dimensions (H x W x D): 264 x 430 x 408mm
- Weight: 30kg / 66lbs

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