ATC HIFI Series User Manual

The ATC C4 Sub Mk2 is a high-performance 12”/300mm active subwoofer, designed from the ground up to deliver the exceptional levels of
performance required to partner ATC’s active and passive loudspeaker range. Its performance and features make it ideally suited to use within
stereo, multi-channel surround and immersive audio systems.
The sub features a sealed-box (innite bae) design, chosen for its balance of sub-bass extension and driver control. The cabinet is heavy and inert
to minimise cabinet colouration.
The S S 7 5 - 314 S C driver employed has been meticulously optimised to reproduce the lowest 3 octaves of the audio band within the design of the
C4 Sub Mk2 subwoofer system. It employs a short-coil operating in an exceptionally long magnetic gap to deliver high sound pressure levels with
very low levels of distortion.
The C4 Sub Mk2’s convection cooled amplier is mounted in the rear of the cabinet. Two balanced Inputs enable connection to mono or stereo
sources. A pair of buered, un-ltered balanced Outputs provide connection to partnering active monitor loudspeakers, ampliers or to daisy
chain multiple subs. 21dB range of gain control, three low pass frequency settings, polarity switch and a 18 0 degree continuously variable phase setting
allow the user to optimise the subwoofer for use with a very wide range of partnering loudspeakers. The low pass lter can also be set to ‘O’
(320Hz) should the user wish to use the C4 Sub Mk2 with external processing. The amplier features fault monitoring of amp panel temperature
and power amplier DC oset and either fault condition is indicated via illumination of a single red LED mounted on the amp panel.
When in use, the subwoofer output can be muted using a single latching footswitch connected via a ¼”/6.35mm jack. The mute function does not
aect the Outputs to the primary loudspeakers, only the output from the sub itself. Additional subs can be muted using the same single footswitch
via connection to the mute ‘Thru’ jack.
Product Description
2 .1
SECTION TWO

ATC HIFI Series Specifications

General

Brand	ATC
Model	HIFI Series
Category	Subwoofer
Language	English