ATC has made substantial improvements to their middle-of-the-range subwoofer which include a new 300-watt Class A/B amplifier and custom built 12-inch Sub-bass Driver. The subwoofer category has grown ...

Design and Controls The Super Eight isn't quite a 12-inch cube ... which contains a 10-inch woofer and 300-watt amplifier, and is roughly an inch and a half larger on all sides.