Faithful to the signal

The ATC badge that adorns the company’s speakers marks the firm’s pride in their ‘Acoustic Engineer’ credentials. They’ve used this know-how, acquired since their inception back in the mid-seventies, to update their C1 subwoofer to a new Mk2 version.

UK speaker specialists, ATC Loudspeakers’ original C1 sub was previously found as part of the company’s ATC C1 5.1surround system and the new C1 Sub Mk2 keeps everything that was successful about the first one, such as the hand-built 12″ ATC bass driver that used a massive motor assembly and 3″ ribbon voice-coil, and adds to it.
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https://www.avforums.com/news/atc-launches-c1-sub-mk2-active-subwoofer.16841