The SI-X series has three (3) subs can help: SI-12BX & SI-15BX are folded horns that give you the lowest frequencies and the punch you need.
的SI - X系列有三（3）潜艇可以帮助：许仕12BX与许仕15BX折叠号角，让您最低的频率和力度需要。
The SI-X series has three (3) subs can help: SI-12BX & SI-15BX are folded horns that give you the lowest frequencies and the punch you need.
的SI - X系列有三（3）潜艇可以帮助：许仕12BX与许仕15BX折叠号角，让您最低的频率和力度需要。
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