Peavey Subcompact 18 Subwoofer is a small and lightweight subwoofer that can be used to enhance the low end of full-range speaker systems. It is also suitable for bass guitar and drum monitoring. The subwoofer features an 18-inch Black Widow woofer with a Kevlar impregnated cone, mounted in a dual resonant chamber configuration. This design provides high output at low distortion by controlling speaker excursion and acoustically filtering out high frequencies.