ATC C4 Sub


ATC C4 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.


  • 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: 450 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, 70Hz, 90Hz, 120Hz, 180Hz low pass 2nd 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.