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Bi-wiring is a means of connecting a loudspeaker to an audio amplifier, primarily used in hi-fi systems. Normally, there is one pair of connectors on a loudspeaker and a single cable (two conductors) runs from the amplifier output to the terminals at the loudspeaker housing.
Bi-amping - An active crossover with two amplifiers. Bi-amping and tri-amping is the practice of using two or three audio amplifiers respectively to amplify different audio frequency ranges, with the amplified signals being routed to different speaker drivers, such as woofers, subwoofers and tweeters.
Any technique that uses crossover filtering followed by amplification is commonly known as bi-amping, tri-amping, quad-amping, and so on, depending on the minimum number of amplifier channels. [ 32 ] Some loudspeaker designs use a combination of passive and active crossover filtering, such as a passive crossover between the mid- and high ...
The four-pole connector is the most common at least from the availability of ready-made leads, as it allows for things like bi-amping (two of the four connections for the higher-frequency signal, with the other two for the lower-frequency signal) without two separate cables.
Using a crossover to separate the sound into low, middle and high frequencies can lead to a "cleaner", clearer sound (see bi-amplification) than routing all of the frequencies through a single full-range speaker system. Nevertheless, many small venues still use a single full-range speaker system, as it is easier to set up and less expensive.
The article describes active loudspeaker systems. In audiophile circles though, bi- or tri-amping refers to the act of hooking up multiple amps to the individual binding posts of a passive speaker where each amp and speaker terminal receives the full signal and the passive crossover still does what it always does.
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Sometimes true point-to-point wiring—without terminal strips—with very short connections, is still used at very high radio frequencies (in the gigahertz range) to minimise stray capacitance and inductance; the capacitance between a circuit-board trace and some other conductor, and the inductance of a short track, become significant or ...