SUB-A SUBWOOFER INTERCONNECT Symmetrical Coax Design Chassis Ground Wire Solid LGC Copper Gold-Plated, AQ Solder 24 AWG Solid Long-Grain Copper (LGC) Conductor (+) PVC Insulation 24 AWG Solid LGC Conductor (-) Foil/Mylar/Foil Shield Black PVC Ground Wire Black with Black Striped PVC Jacket Identical +/Conductors Sub-A minimizes distortion by using identical solid Long-Grain Copper conductors for “+” and “-“. Solid conductors eliminate distortion caused by strand interaction. The simpler grain structure and fewer impurities within Long-Grain Copper provide significantly clearer sound than normal OFHC copper. Gold-plated high-conductivity plugs are attached with specially formulated AQ Solder. DIRECTIONS: Sometimes there is a hum problem unless the subwoofer and receiver (or processor) are attached to each other through a separate wire. If your system has a hum problem, try attaching the little spade-lug tails to the metal chassis of the subwoofer amp and to the chassis of the sending component. Usually, this extra wire will not be needed.