The C4 Sub Mk2 is a high-performance 12″/300mm active subwoofer, designed to deliver the exceptional levels of performance demanded by audiophiles and film & music lovers and integral to partnering with ATCs range of loudspeakers. The subwoofer performance and features make it ideally suited to stereo, AV and home cinema applications.
The C4 Sub Mk 2 cabinet
Hand-built and finished at ATC’s cabinet factory and sharing styling with the brand’s ‘Classic’ and ‘Tower’ series loudspeakers, the C4 Sub Mk 2’s 70 litre cabinet employs 25mm/1″ thick panels plus heavy bracing. It’s available in standard Cherry, Black Ash, Walnut and Oak real-wood veneers, as well as Satin Black and Satin White finishes, or in premium Rosewood, European Crown Cut Walnut, Burr Magnolia and Pippy Oak real-wood veneers, with the option of high gloss over veneers and black/white piano lacquers also available.
New 300W ATC amplifier
The all-new 300W class AB design is precisely optimised to the requirements of the new driver, resulting in fast, dynamic bass with minimal colouration. Two balanced line inputs provide connectivity for stereo or AV/home cinema systems while two balanced outputs are available to feed partnering ‘main’ stereo loudspeakers or to ‘daisy-chain’ multiple subs. Low-pass filters are analogue, 4th order Linkwitz-Riley, with filter frequency options ensuring optimal integration with partnering speakers. In addition, an industry-standard 80Hz low-pass filter and an ‘off’ option (for use with external processing) are joined by a polarity switch, variable 180° phase adjustment and a stepped attenuator over a 21 dB range for precise level matching.
Key Features
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
Specifications
Acoustic Specifications | |
Drive Unit – Bass | 1 x 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 |
Balanced Outputs | 2 x Rear Panel Mounted Male XLR, pin 2 hot |
Power Consumption | Idle 8W/14VA. 1/8th Power 170W/230VA. Full Power 500W/600VA |
Physical Specifications | |
Dimensions: (H x W x D) | 568 x 465 x 519mm Heatsink protrudes a further 40mm |
Net Weight | 42kg |
Finish Options | |
Standard veneers | Cherry, walnut, oak, black ash |
Standard finishes | Satin black, satin white |
Premium veneers | European crown cut walnut, pippy oak, rosewood, burr magnolia, burr poplar. Available with High Gloss over veneer (Premium Option) |
