A subwoofer cable is used for connecting an amplifier or a receiver to a subwoofer to carry bass signals. It is made of special copper conductors that transmit very low frequencies common to film and movie scores. The conductors are protected by thick shields that block electromagnetic noise and radio frequency interference. Subwoofer cables are available in oval, hollow oval, and sidewinder types.
An Oval subwoofer cable has a smaller loop area between the return and the signal conductor to reduce low-frequency noise. It produces deep bass responses for more realistic sounds.
A hollow Oval subwoofer cable transmits very low frequencies. It is ideal for in-wall use. It is made with a hollow Oval geometry that prevents muddy bass sounds and current bunching.
A Sidewinder subwoofer cable is similar to a coaxial cable, but it uses the same connector for both ground and positive connections. Its solid center conductors are covered by foil shields to produce extremely clear sounds.
Solid conductors: Choose a subwoofer cable made with solid conductors rather than strands of wire to eliminate distortion and produce clear sounds.
Conductor material: Look for a subwoofer cable made of Long Grain Copper (LGC) rather than Oxygen Free High Conductivity (OFHC) copper, as it produces clearer sounds. It also has less grain boundaries and impurities.
Insulating material: Choose a subwoofer cable made of PVC dielectric that is resistant to energy absorption and sound distortion. Do not get one with a solid, protective covering, as a solid material connected to a conductor can absorb energy, which results in distortion.
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