Bi-wiring

Bi-wiring is a method of connecting a loudspeaker to an audio amplifier using two pairs of wires for each speaker. In a typical bi-wiring setup, one pair of wires connects to the high-frequency (tweeter) terminals of the speaker, and the other pair connects to the low-frequency (woofer) terminals.

The purpose of bi-wiring is debated, with proponents arguing it can improve audio quality by reducing intermodulation distortion within the speaker cable and allowing the amplifier to better control the different drivers. The theory behind this claim is that separating the high and low frequency signals into separate cables reduces the interaction between them, potentially resulting in a cleaner and more detailed sound.

Skeptics argue that any audible difference between bi-wiring and traditional single-wiring is negligible or non-existent, and that any perceived improvement is more likely due to other factors, such as the use of higher-quality speaker cables or placebo effect. They point out that the crossover network within the speaker is still common to both the high- and low-frequency drivers, effectively negating any separation achieved by bi-wiring.

To implement bi-wiring, the loudspeaker must have separate terminals for the high-frequency and low-frequency sections, which are normally connected by metal jumper bars. These jumpers must be removed before bi-wiring. The amplifier must also have the capacity to drive the additional speaker wire pairs.

Alternative configurations related to bi-wiring include bi-amping, which involves using separate amplifiers for the high-frequency and low-frequency sections of the speaker.