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E-Lektron STP-1 Pair Passive Crossover Crossover
2-way frequency soft pair, 2 x STP-1 passive crossover for connecting subwoofer and top parts to the speaker output of a power amplifier. The intermediate circuit of the switches transmits the appropriate part of the frequency spectrum to the subwoofer and top section and you can hear that: clean bass response and more power per speaker.