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By certification 
SW-112B FullRange & Bass Loudspeaker Systems
SW-112B of 5.S brand is a high sound pressure output and ultra-low frequency enclosure embedded in a 12” 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-08. This product has been equiped with most advanced unit long stroke and great magnetic force that bring a high magnetic flux as a way to increase efficiemcy
SW-112B of 5.S brand is a high sound pressure output and ultra-low frequency enclosure embedded in a 12” 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-08. This product has been equiped with most advanced unit long stroke and great magnetic force that bring a high magnetic flux as a way to increase efficiemcy
