ATC Loudspeakers SCS140iW Pro

Installation subwoofer 2x12"

ATC The SCS140iW Pro is a high-performance active subwoofer with two 12-inch speakers, designed for wall-mounting in large control rooms. It works perfectly with the SCM200AiW Pro main monitors in stereo, multi-channel and immersive configurations. The width of the cabinet is matched to the model SCM200, which provides an aesthetically pleasing, consistent appearance when both units are installed. The SCS140iW Pro also complements smaller monitors where extended bass response and high sound pressure levels are required.

Acoustic Specifications:

• The ideal partner for the SCM200AiW Pro main monitors.
• Wall-mounted (flat) enclosure with recessed entrance panels.
• ATC's handcrafted 12-inch/314mm SS75-314SC subwoofer drivers.
• R1-300 (7U/19”) dual rack-mount remote amplifiers.
• Connection of the amplifier to the subwoofer via NL4 speaker cable and 5-pin XLR LED cable*.
• Stereo symmetrical inputs and stereo symmetrical „link” outputs.
• Adjusts level, low-pass frequency and phase.
• Remote muting via foot switch**.
• Handmade in England and covered by a 6-year warranty.

*Cables supplied separately, prices depending on length.
** Foot switch supplied separately, snap-on type, 1/4”/6.35mm jack connector.

Electronic specification:

Note - the specifications are for a single amplifier, and there are two amplifiers in each enclosure.

• Symmetrical input: 2 x female XLR, pin 2 hot.
• Input impedance: approximately 20 kΩ (differential).
• Input CMRR: 90 dB at 200 Hz.
• Input sensitivity: 6 dBu / 1.55 Vrms at full power (single channel driven, 0 dB gain, 0 dB level).
• Gain adjustment: 0, +6 dB, +10 dB.
• Level adjustment: 0 dB - 11 dB in 1 dB steps. Total range of 21 dB with gain switch.
• Phase adjustment: 0-180° input reference.
• Polarity adjustment: in-phase/out-of-phase reference to input.
• Low pass filters: 4th order Linkwitz Riley.
• Output impedance: approximately 100 Ω (differential).
• Amplifier type: class A-B based MOSFET transistor with grounded source, convection cooled.
• Output power: 300 watts at 8 ohm. THD+N: <0.003%/-90 dB, at 100 Hz, 300 W at 8 Ω in 90 kHz bandwidth.
• Frequency response: <2 Hz (-3 dB) - 320 Hz (-6 dB, adjustable with panel-controlled LP filter).
• Limiter: ATC Active FET Momentary Gain Reduction, active limiter indicated on front panel.
• Electronic amplifier protection: amplifier DC offset and overheating (both indicated on the rear panel).
• Power consumption: at idle 16 W/60 VA, at 1/8 power 170 W/230 VA, at full power 500 W/600 VA.
• Mains input: 220-230 V, 115 V - factory setting. Observe the markings and labels on the panel.
• Thermal efficiency: at rest 47.8 BTU/h, at 1/8 power 458.9 BTU/h, at full power 682.4 BTU/h.
• Additional: mute via a ¼”/ 6.35mm jack socket, controlled by a footswitch with a latch.