This crossover filter lets you split the signal run in from a single amplifer into seperate sub/bass and tops/high mids. This enables you to connect a specific speaker to the sub/bass output and for the top/high mids. A fanstastic device allowing for different frequencies to directed at the right type of speaker making it a much safer way to reduce the possibility of damage from putting too much sub/bass through a speaker that is not capable of handling it. .
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