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By certification 
SW-115B FullRange & Bass Loudspeaker Systems
SW-115B of 5.S brand is a high sound pressure output and ultra-low frequency enclosure embedded in a 15" high-power low distortion unit,The bass horn is designed to bring a close and precise bass response to the wooden box,is the most ideal collocation with LY-10.
SW-115B of 5.S brand is a high sound pressure output and ultra-low frequency enclosure embedded in a 15" high-power low distortion unit,The bass horn is designed to bring a close and precise bass response to the wooden box,is the most ideal collocation with LY-10.
