ATC C4 Sub Mk2 – Active High-End Subwoofer

The ATC C4 Sub Mk2 has been designed to complement music and home cinema systems with precise, deep bass reproduction. The completely redesigned model combines a proprietary 12-inch sub-bass driver with a specially tuned 300-watt Class A/B MOSFET power amplifier. The sealed enclosure ensures exceptionally controlled, fast, and low-distortion bass reproduction – without any artificial bass boost or electronic equalization.

The SS75-314SC driver, developed in-house by ATC, operates on the proven long-gap/short-coil principle and delivers exceptionally linear performance even at high output levels. Extensive adjustment options for gain, phase, polarity, and low-pass filter enable perfect integration into stereo, AV, or home cinema systems. Thanks to balanced XLR inputs and outputs, the C4 Sub Mk2 can be easily combined with active loudspeakers or high-end preamplifiers.

Design principle:
Active subwoofer

Enclosure:
Sealed (Acoustic Suspension)

Woofer:
1 × 314 mm (12") ATC SS75-314SC

Amplifier:
300 W MOSFET Class A/B

Frequency response:
22 Hz (-6 dB)

Low-pass filter:
50 Hz / 65 Hz / 80 Hz / 320 Hz (4th order Linkwitz-Riley)

Maximum sound pressure level:
110 dB continuous
116 dB peak

Inputs:
2 × balanced XLR

Outputs:
2 × balanced XLR (link outputs)

Level adjustment:
21 dB control range

Gain switch:
0 / +6 / +10 dB

Phase control:
0–180°

Polarity:
switchable

Input impedance:
20 kΩ

Power consumption:

Standby:
approx. 8 W

Maximum:
approx. 500 W

Dimensions (H × W × D):
568 × 464 × 500 mm

Weight:
42 kg

Herstellerangaben:

Audio Tuning Sales GmbH
Analog Way 1
A5 Business Park Mistelbach/Wilfersdorf
2130 , Mistelbach
AUSTRIA
info@project-audio.com

Verantwortliche Person:

ATR – Audio Trade HiFi – Sales Company LLC
Wallufer Straße 2
65343 , Eltville am Rhein
Germany
pro-ject@audiotra.de