Home Speakers & Audio Monoprice Monolith 15" 1000W Powered Subwoofer (THX Ultra Certified) $1149.99 Speakers & Audio Monoprice Monolith 15" 1000W Powered Subwoofer (THX Ultra Certified) $1149.99 By ARCOM - 11 August 2021 84 0 SHARE Facebook Twitter Go to the deal page: Monoprice Monolith 15" 1000W Powered Subwoofer (THX Ultra Certified) $1149.99