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By certification 
D-115B FullRange & Bass Loudspeaker Systems
D-115B of 5.S brand is embedded in a pcs of 15”(100mm) voice coil, high-power of ultra-low distortion unit which is imported from Italy. D-115B of 5.S is suitable for stadium, auditorium,theater, large-scale activities etc; bring a strong solution to the audio system.
D-115B of 5.S brand is embedded in a pcs of 15”(100mm) voice coil, high-power of ultra-low distortion unit which is imported from Italy. D-115B of 5.S is suitable for stadium, auditorium,theater, large-scale activities etc; bring a strong solution to the audio system.
