The GRS 15PR-8 speaker is the best choice you can make if you need to replace a worn out, blown 15" woofer.
GRS 10PF-8 10" paper cone woofers are ideal replacement speakers for use in sealed-box loudspeaker systems in almost any application.
Bic America. Bic Rtr Rtr-Ev1200 12" 475-Watt Eviction Series Front-Firing Subwoofer. Specs: 475W Peak Power; Bash-Designed Amplifier; 12" Custom Eviction Series Woofer With High-Power Magnet; Freq Resp: 25 Hz-200 Hz; Variable/Adjustable Crossover: 40 Hz-180 Hz; Gold-Plated Speaker Level Inputs; Rca Input; Auto On/Off; Phase Switch; Adjustable Vo. Warranty: Five Years Woofer, 2 Years Amp.