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The Audioquest Black Lab Subwoofer Cable delivers superior audio performance with solid Long-Grain Copper conductors and advanced noise dissipation technology, ensuring clear, distortion-free bass for your home theatre system. Key Features Solid Long-Grain Copper (LGC) Conductors: Eliminates strand-interaction distortion for smoother, clearer sound compared to regular OFHC copper. Foamed-Polyethylene Insulation: Air-filled insulation reduces energy loss and distortion, preserving audio clarity. Metal-Layer Noise-Dissipation System (NDS): Minimises radio frequency interference (RFI) to protect your equipment’s ground plane. Symmetrical Coax Geometry: Ensures identical positive and negative conductors, preventing the shield from acting as an inferior audio conductor. Cold-Welded Gold-Plated Plugs: Provides distortion-free connections without solder, using low-distortion metals for enhanced audio fidelity. Grounding Instructions: Includes ground leads to eliminate hum; connect to equipment ground points if necessary. Grounding Instructions If you experience noticeable hum after connecting your subwoofer, attach the cable’s ground leads to your audio equipment. Some devices have a ground (GND) connection on the back panel; if not, connect the ground spade lugs to any screw on the chassis of both the source and the subwoofer. Usually, this wire does not need to be connected.