ATC C1 Sub Mk2



  • Compact 12″ Sub suitable for both music and cinema applications

  • Ideal partner to ATC loudspeakers: SCM7, SCM11, SCM19, SCM40, HTS7, HTS11, HTS40

  • Ideal partner to ATC Centre Channel Speakers: C1C & C3C

  • Handmade ATC 12″/314mm driver with massive motor assembly and ribbon voice coil

  • ATC 200W class A/B amplifier

  • High Level and Line Level Inputs

  • Comprehensive user controls to ensure best possible integration with partnering loudspeakers

  • 6 Year warranty

C1 Sub Mk2 Specifications

Driver: 12” / 314mm

LF Cut Off (-6dB): 25Hz

Max SPL: 103dB

Amplifier output: 200W

User Controls: Gain, Low Pass Frequency, Polarity, Phase

Inputs: Stereo High Level Binding Posts & Stereo Line Level RCA/Phono

Outputs: Mono Summed Line Level RCA/Phono

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

Weight: 26.2kg / 57.64lbs

Faithful to the signal, a new C1 subwoofer design will generate deeper, cleaner bass.

Built to provide a dynamic low-distortion 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” (314mm) 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 customarily transparent 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 comprehensively re-worked to facilitate the best possible integration with partnering speakers from ATC and other manufacturers.

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.

The C1 Sub is available now 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. 

Enhanced by ATC’s traditionally robust engineering and scrupulous attention to detail, the new C1 Sub Mk2 active subwoofer will generate a reliably accurate performance over a very long life, backed by ATC’s standard six year warranty.