Go Deep: British-Built ATC C4 Sub Mk2 Subwoofer Designed for Audiophiles, Blends Seamlessly with ATC Loudspeakers
Designed and built to perfectionist standards in England, the ATC C4 Sub Mk2 subwoofer functions as an ideal complement to any pair of ATC bookshelf or tower loudspeakers and expands your listening horizons. Anchored by a proprietary 12-inch driver and 300W convention-cooled discrete MOSFET Class AB amplifier, this massive active sub (it weighs in at nearly 90 pounds) delivers the exceptional performance demanded by audiophiles, cineophiles, and music lovers alike.
Able to be used in 2.1 systems as well as home-theater setups, C4 Sub Mk2 plays with reference-setting standards of clarity in the lowest four octaves, enhancing not only low-end detail, solidity, and foundations but providing harmonic support. A pair of balanced XLR inputs, a pair of balanced XLR outputs, and user-friendly features such as adjustable gain plus low-pass frequency, polarity, and phase settings ensure you can dial in C4 Sub Mk2 to your personal and room's specifications.
- High performance sealed box design using 12"/314mm ATC proprietary sub driver
- Ideal partner to SCM19, SCM20, SCM40, SCM50, SCM100
- Suitable for use in stereo, AV and home cinema applications
- On-board 300W convention cooled discrete MOSFET class A/B amp
- 2 x balanced XLR inputs
- 2 x balanced XLR outputs (un-filtered/processed)
- User adjustable gain, low pass frequency, polarity and phase settings
- 6 Year warranty.
- Acoustic Specifications:
- Drive Unit – 12″ SS75-314SC 8Ω
- Low Frequency Cut-off: 22Hz (-6dB, half space, low pass filter set at 80Hz).
- Low Pass Filters: 50Hz, 65Hz, 80Hz, 320Hz. (-6dB, 4th order Linkwitz Riley).
- MaxSPL: 110dB continuous, 116dB peak (IEC Weighted Pink Noise, 1m, half space, low pass filter @ 80Hz).
- Sensitivity: +4dBu ref. 88dBC (single channel driven, Gain +6dB, Level 0dB, pink noise, low pass filter @ 80Hz).
- Electronic Specifications:
- Amplifier type: Grounded Source MOSFET based Class A-B, convection cooled
- Output Power: 300W into 8Ω
- THD+N: <0.003%/-90dB, at 100Hz, 300W into 8Ω over 90kHz bandwidth
- Balanced Inputs: 2 x Rear Panel Mounted Female XLR, pin 2 hot
- Input CMRR: 90dB at 200Hz
- Input Impedance: 20kΩ (differential)
- Balanced Outputs: 2 x Rear Panel Mounted Male XLR, pin 2 hot
- Output Impedance: 100Ω (differential)
- Frequency Response: <2Hz (-3dB) – 320Hz (-6dB, set by panel-controlled LP filter)
- Low Pass Filters: 4th Order Linkwitz Riley
- Gain Control: 0, +6dB, +10dB
- Level Control: 0dB -11dB in 1dB steps. Total range 21dB with use of Gain switch
- Phase Control: 0-180° ref. Input
- Polarity Control: In-phase/Out-of-phase ref. Input
- Limiter: ATC Active FET Momentary Gain Reduction.
- Sensitivity: 1.55Vrms for full power (single channel driven, Gain 0dB, Level 0dB)
- Mains Input: 220-230V or 115V – Factory set. Please observe panel markings and labels!
- Power Consumption: Idle 8W/14VA. 1/8th Power 170W/230VA. Full Power 500W/600VA.
- Additional: Mute via ¼"/ 6.35mm Jack socket, controlled via latching footswitch*.
- *Footswitch supplied separately, latching type, ¼"/6.35mm jack connection.
- Physical Specifications:
- Dimensions: (H x W x D): 568 x 465 x 519mm / 22 3/8 x 18 5/16 x 20 7/16 inches
- Heatsink protrudes a further 40mm / 1 9/16 inches from rear and optional spikes add an additional 22mm/ 7/8 inches to height.
- Net Weight: 42kg / 92.6lbs.
User Manual (PDF, 1.9 MB)
