Subwoofers — ATC C4 Sub Mk2

The C4 Sub Mk2 is a powered subwoofer from ATC, a British manufacturer with a considerable reputation for professional studio-monitor engineering, built with substantial internal amplification suited to complementing ATC's active monitor range. The C4 Sub Mk2 brings ATC's professional monitoring heritage to dedicated bass reinforcement.

Key specs that matter

Rated response spans down to 22Hz (-6dB). Internal amplification delivers 300W. At 56.8 x 46.4 x 50.0cm and 42kg, the C4 Sub Mk2 represents a serious subwoofer commitment consistent with ATC's professional-derived engineering standards.

Sound and use context

Expect controlled, accurate bass reinforcement reflecting ATC's professional studio-monitoring heritage, suited to complementing the brand's active monitor range with genuine low-frequency authority.

Pairing

As a self-powered subwoofer, the C4 Sub Mk2 connects to a preamplifier, integrated amplifier or AV receiver's subwoofer output directly, pairing naturally with ATC's own active monitor range.

Alternatives

ATC's own C6 Sub sits above this model with somewhat deeper bass extension and greater amplification, worth the further investment for buyers wanting additional low-frequency authority.