ATC C4 MK2 Subwoofer

ATC Speakers and Hifi components are now available in Queensland and Northern NSW's. Please contact Terry at GC HiFi on 0419448452 to arrange a private listening session from the current list of demo speakers we have on hand for auditions.

World renowned for its signature high output, low-distortion audio engineering and trusted by musicians, studios, live sound engineers and audiophiles over five decades, The Acoustic Transducer Company (ATC) proudly introduces the C4 Sub Mk 2 active subwoofer system. Designed to unite the highest standards of driver and electronics engineering in a single system, the C4 Sub Mk 2 deploys the all-new proprietary 12-inch SS75-314SC sub-bass driver, powered by a newly developed 300W class AB amplifier design, both elements hand-built and installed within a substantial cabinet at the company’s Stroud-based production HQ.

Features

• Proprietary dedicated at sub bass driver.

• On board 300W Misfit Class A/B amplifier.

• Ideal partner to SCM19, SCM20, SCM50 and SCM100.

• Variable low pass filter, adjustable gain, low pass frequency, polarity and phase settings.

• Stereo, home cinema and AV applications compatible.

• Hand-built in England, 6 year warranty. 

ACOUSTIC SPECIFICATIONS

• Drive Unit – Bass: 1 x SS75-314SC 8Ω

• Low Frequency Cut-of f: 22Hz (-6dB, half space, low pass f ilter 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 in to 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

• Net Weight: 42kg

• Dimensions: HxWxD 568x464x500mm

Cabinet Finish: 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.