The small sub-woofer is immensely powerful for its size. It houses a heavy duty 8\" long throw bass unit with fourlayer voice coil and titanium former for high power handling and efficient thermal dissipation. Fully active with a built-in amplifier and crossover network, it can be used for either 5.1 applications or two-channel audio.

For ProAc, the development of a sub-woofer has only recently become a priority. In our opinion early designs blurred detail and imagery in stereo systems. We felt that it was only with the advent of the more compact active sub-woofers with their own electronics and filters that matching capability and sound quality were improved, but we still did not feel the need to produce our own unit.