Built to provide a bass foundation for ATC’s Entry Series speakers, its C1C and C3C centre speakers, HTS Series on-wall speakers and all but the largest satellite speaker systems, the new C1 Sub Mk 2 is a compact real wood veneered design, incorporating a hand-built 12” ATC bass driver and a fully discrete ATC 200W MOSFET power amplifier.

Designed for both music and cinema applications and replacing the Mk1 version, the new C1 Sub promises a quality of low-frequency reproduction that belies its price point. The re-engineered design incorporates ATC’s circuits boosted by larger power supplies, the latest ATC grounded-source 200 watt Class A/B discrete MOSFET power module and improved overload protection circuitry (with front-panel indicator) for greater control at full output. The low-pass filter circuits have been re-worked to facilitate the best possible integration with partnering speakers from ATC and other manufacturers.

Active Subwoofer

Controls include a continuously variable low pass filter, a continuously variable all-pass filter and polarity switch, speaker level L/R inputs, independent L/R RCA line inputs and a summed line output RCA connector to facilitate the daisy-chaining of multiple subwoofers.

12” ATC Driver

Retained by the Mk2 C1 sub is the hand-built 12″ ATC bass driver using a massive motor assembly and 3″ ribbon voice-coil. Its precision pairing with the new C1 Sub amplifier will deliver clean and dynamic low frequencies down to 25Hz (-6dB). ATC recommends that a single C1 sub partners speakers up to the SCM19 and HTS11, and that two subs partner SCM40 and HTS40 (although not essential in all room sizes).

Price And Availability

The C1 Sub is available from November 2019 in four real wood finishes: Cherry, Black Ash, Satin Black, Satin White to match Entry Series speakers, centre speakers and HTS Series on-wall products. £1650.

C1 Sub Mk2 Specifications:

Driver 12” / 314mm

LF Cut Off Frequency (-6dB) 25Hz

Max SPL 103dB

Amplifier output 200W

User Controls Gain, Low Pass Frequency, Polarity, Phase

Inputs Stereo High Level & Stereo Line Level

Outputs Mono Summed Line Level

Dimensions (HxWxD) 450 x 360 x 400 mm (incl. feet and heatsink)

Weight 26.2kg

6 year warranty

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