Simple Explanation

A speaker design where two sets of drivers on opposite sides move together in phase to create a wide, immersive sound.

Concise Technical Definition

A loudspeaker configuration with drivers mounted on opposing sides of the enclosure, wired in phase so both sides move synchronously. Used to produce a more ambient sound field, often for surround channels in home theaters.

Layman-Friendly Analogy

Like two people clapping in sync on either side of a room—the sound comes from both sides at once, filling the space.

Industry Usage Summary

Bi-pole speakers are typically used in home theater systems as surround speakers to broaden sound dispersion and reduce localization, enhancing immersion without pinpointing the speaker’s exact location.

Engineering Shortcut

Bi-pole = drivers on opposite sides firing in-phase.

Full Technical Explanation

Bi-pole (or bipolar) speakers use two sets of drivers positioned on opposite sides of the speaker cabinet, with both sets operating in-phase—moving in and out together. This design produces a more diffuse sound field than direct-radiating speakers but is more directional than di-pole designs. Bi-poles are effective in home theater environments where ambient, non-localizable sound from surround channels is desired without compromising clarity or tonal balance.