SCS120 PRO, 15" Professional Active Subwoofer
The ATC SCS120 PRO is a 15 inch active subwoofer engineered to deliver precise, powerful and extended low frequency reproduction for professional audio environments. It is designed to complement ATC active monitors and provides the high dynamic range required for accurate monitoring in larger rooms, making it ideal for midfield and main monitor systems. The SCS120 PRO excels in stereo, multichannel surround, and immersive formats including Dolby Atmos, offering clean output, deep extension and very low distortion for critical production, mixing and mastering work.
Features
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ATC hand built high excursion 15 inch SS75 375SC subwoofer driver
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High sound pressure capability with low frequency extension and minimal distortion
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ATC discrete MOSFET class AB power amplifier
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Stereo balanced inputs and stereo LINK balanced outputs
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User adjustable level, low pass frequency and phase controls
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Remote muting via optional footswitch with 6.35mm jack connection
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Built and tested in England with a six year warranty
Technical Specifications
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Drive unit, bass: one ATC SS75 375SC, 8 ohm
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Low frequency cut off: 20 Hz at minus 6 dB, measured in half space with low pass filter set to 80 Hz
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Low pass filter options: 50 Hz, 65 Hz, 80 Hz, 320 Hz, each using fourth order Linkwitz Riley topology
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Maximum sound pressure: 113 dB continuous and 119 dB peak, IEC weighted pink noise at one metre in half space, low pass filter set to 80 Hz
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Sensitivity: 85 dBC referenced to minus 17 dBu, single channel driven, gain plus 6 dB, level 0 dB, pink noise, low pass filter set to 80 Hz
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Balanced input: two rear panel female XLR, pin 2 hot
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Input impedance: approximately 20 k ohm differential
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Input CMRR: 90 dB at 200 Hz
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Input sensitivity: 1.12 Vrms for full output, single channel driven, gain 0 dB, level 0 dB
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Gain control: 0 dB, plus 6 dB, plus 10 dB
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Level control: 0 dB to minus 11 dB in one dB steps, with a total range of 21 dB when used with the gain switch
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Phase control: from 0 to 180 degrees referenced to input
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Polarity control: in phase or out of phase referenced to input
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Low pass filters: fourth order Linkwitz Riley
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Output impedance: approximately 100 ohm differential
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Amplifier type: grounded source MOSFET class AB with convection cooling
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Output power: 300 W into 8 ohm
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THD plus noise: less than 0.003 percent or minus 90 dB at 100 Hz, 300 W into 8 ohm over a 90 kHz bandwidth
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Frequency response: below 2 Hz at minus 3 dB to 320 Hz at minus 6 dB depending on panel controlled low pass filter
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Limiter: ATC active FET momentary gain reduction, with front panel indication
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Electronic amplifier protection: DC offset and over temperature, with rear panel indication
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Power consumption: idle 16 W or 60 VA, one eighth power 170 W or 230 VA, full power 500 W or 600 VA
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Power supply: 220 to 230 V or 115 V, factory set
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Heat output: idle 47.8 BTU per hour, one eighth power 458.9 BTU per hour, full power 682.4 BTU per hour
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Additional control: mute via 6.35 mm jack socket, footswitch latching
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Dimensions in mm, W x H x D: 498 x 630 x 608 including heat sink
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Weight: 44.5 kg
