The sub-woofer amplifier control and connection panel provides a range of adjustment functions to assist its integration with the satellite speakers. ATC's C4 sub woofer delivers super clean and controlled bass and is a great match for the any of ATC's SCM speakers. They are unique in their ability to accurately reproduce a wide range of complex material while delivering a consistent and precise response regardless of what is fed into the speaker, the C4 delivers a well balanced and natural sounding performance and is designed for rooms up to 50 square metres.

Full "SL" spec 12"/314mm bass driver.

450W Class G amplifier.

Phase adjustment.

Variable cut off frequency.

Variable gain.

Stereo inputs.

6 year warranty.

Drivers: 314mm (12")

Cut-off Frequencies (-3dB free standing): 18Hz & 250Hz

Max Continuous SPL: 112dB SPL @ 1 metre

Input Connectors: 2 xMale XLR

Input Sensitivity: 1V Balanced

Input Impedance: >10k Ohms

Common Mode Rejection: >90dB

Harmonic Distortion (amplifier): <0.01%

Amplifier Output

Continuous: 650 Watts RMS

Dynamic: 1000 Watts

Overload Protection: Active FET momentary gain reduction

Gain Control Range: ±6dB

Contour Equaliser: 6dB lift @ 40 - 60Hz

Filter Characteristics: 50Hz, 60Hz, 70Hz, 80Hz, 90Hz low pass second order critically damped

Power Requirements: 100, 115, 230V (factory set for territory), 50/60Hz

Cabinet Dimensions (HxWxD): 581 x 530 x 530mm (22.9 x 20.9 x 20.9)

Overall Weight: 68kg (150lb)

Cabinet Finish: Standard real wood veneers are available in Black Ash, Mahogany, Cherry and Natural Oak. Other veneers and finishes can also be supplied to special order.