The REL Bassline Blue Line Array Connectors are built for vertical stacks of Serie S and Reference models, these connectors keep installations organised while maintaining sonic transparency. Bassline Blue Line Array Connectors are used to daisy-chain each of the subwoofers together in a Line Array. By using these connectors each Line Array stack only requires a single high-level cable to be run from the amplifier to the bottom subwoofer. The Line Array Connectors will then feed the signal from the bottom to the top units. A pair is required for each vertical level of the Line Array stack in a stereo configuration.