... amplifier,loudspeaker,subwoofer, micphone, pro audio 15 inch speaker CBX-215 , box sound system ,pro fessional karaoke equipment, professional vocal sound ... bass speaker 99db SPL 15 inch pro audio speaker CBX-215 Features:*A unique polygon two-way speaker.*Good Midrange performance ... Steel with Acoustic Cloth insideDimensions (mm)408*395*700Net. W.27.5 kg