Single Voice Coil Vs. Dual Voice Coil Subwoofers
By Mona Prestenbach
Subwoofers produce very low frequency sounds also known as bass. Subwoofers can be wired with either single- or dual-voice coils. The coil wiring in the subwoofer works with current sent from the amplifier to produce sound.
Single-voice coils will offer one set of negative and positive terminals. These terminals are used to connect audio equipment to the subwoofer. There is a single coil wrapped around the speaker cylinder. Single-voice coil subwoofers can only be wired for the ohm (the amount of current the speaker will draw) specified.
Dual-voice coils offer two sets of negative and positive terminals. Two coils are wrapped around the speaker cylinder in a dual-voice coil. Dual-voice has multiple wiring options such as parallel, series and independent wiring. Parallel wiring produces the most output. Series wiring is using one amplifier with several subwoofers; independent wiring is using one coil per channel.
The prominent difference between single-voice coil subwoofers and dual-voice subwoofers is that the dual-voice have more wiring options. In most cases, single- and dual-voice subwoofers offer the same frequency, power and box specifications.
Mona Prestenbach is from south Louisiana and started writing professionally in 2010. With over two decades of extensive office experience she offers excellent communication and organizational skills. She is a state-licensed, nationally certified Massage Therapist with a Master of Science from Blue Cliff College.