The Bose F1 subwoofer is a great compact sub for the F1 system. Its 1,000-watt platform and twin 10" drivers make sure your low end stays punchy. You can even switch between full-range and highpass-filter modes, making the F1 sub great with a main speaker. And best of all, the whole subwoofer package weighs under 60 lbs — a mobile rig's dream sub. And there's no more carrying around pesky speaker stands, because the F1 sub comes with a built-in bracket for mounting Bose's F1 812 flexible-array loudspeaker.