ATC has introduced the SCS140iW Pro and SCS240iW Pro subwoofers as dual-driver versions of its SCS70iW Pro and SCS120iW Pro in-wall subwoofers respectively.
Capable of exceptional low-frequency extension, expanded dynamic range and use in stereo, surround and immersive systems, including Dolby Atmos, the SCS140iW Pro is a 2x12-inch design, advanving the SCS70iW Pro with a pair of 12-inch/300mm drivers and dual remote amplifiers. This lifts the output of an already dynamic subwoofer by 6dB, resulting in a continuous and peak SPL capability of 116dB and 121dB (at 1m). Physically, SCS140iW Pro’s cabinet size is relatively compact given that high output, with the width matching the SCM200AiW in-wall main monitor for visual integration when used together. This sub can also partner smaller ATC models, or work with any system where an extended bass response and high SPL/headroom is required.
The larger and more powerful SCS240iW Pro is suited to large control rooms, supporting ATC’s SCM300AiW in-wall main monitor as a 2x15-inch design derived from the SCS120iW Pro in-wall subwoofer. Amplifier and driver count is doubled, resulting in a 6dB increase in continuous and peak output – 119dB continuous and 126dB peak (at 1m). The width of the SCS240iW Pro matches that of the SCM300AiW in-wall monitor. It can also partner smaller ATC models, or work with any system where an extended bass response and very high SPL/headroom is required.
The 12-inch/300mm and 15-inch/375mm drivers used in SCS140iW Pro and SCS240iW Pro are both built by ATC –and optimised for reproduction of the lowest four octaves of the audio band. Both feature a 30mm magnetic gap that is 50 per cent longer than any other offered by its maker. This long gap and short-coil configuration takes a longstanding ATC design feature to its limit, ensuring magnetic nonlinearities are minimised while simultaneously delivering the high excursion required to generate accurate, dynamic low frequency from modest cone area.
The advanced transducer combines a powerful short-coil motor system featuring optimised airflow and cooling with a carbon-paper composite cone, and results in deep, clean bass from 120Hz down to below 20Hz (in SCS240iW Pro’s case) – and all with minimal distortion and maximum impact.
Both subwoofers share some features with sealed box designs, including in-wall-specific cabinets with recessed input panels and full-face square-edge baffles and drivers. Both being partnered with dual R1-300 Pro remote-mounted 7U-high/19-inch amplifiers allows for flexible installation in a suitable wall close to the subwoofer, in a control room rack or machine room, with connections made via NL4 speaker and 5-pin XLR cables.
Connectivity and control includes balanced stereo Inputs, balanced (full-range) Outputs, and analogue fourth-order Linkwitz-Riley filters with multiple crossover options – including an industry-standard 80Hz setting and bypass setting for external processing – while a Polarity switch, variable Phase control, and stepped Attenuator allow precise system tuning. The 300W class A-B amplifiers are hand-built for fast, dynamic response and feature a mute control via footswitch, with daisy-chain capability for multiple subs.
SCS140iW Pro is available at a RRP of £7,700 (exc VAT), including its dual R1-300 Pro remote power amplifier (exc cables). SCS240iW Pro costs £10,817 (RRP, exc VAT), including its dual R1-300 Pro remote power amplifier (exc cables).