Simple Explanation

An active device needs power to work, unlike a passive one. Examples include active speakers and active crossovers.

Concise Technical Definition

In loudspeakers, “active” refers to any unit that requires external power or has built-in amplification. An active speaker must be plugged into the wall, whereas a passive speaker connects to an external amplifier via cables.

Layman-Friendly Analogy

Think of an active speaker like a smart device with its own power plug and brain, while a passive one is just the speaker and needs an outside source to run it.

Industry Usage Summary

“Active” is commonly used to describe powered speakers, signal processors, and crossovers. These devices include built-in amplification or electronics and must be connected to power. Especially common in studio monitors and portable PA systems.

Engineering Shortcut

Active = requires power (e.g. amp built-in); opposite of passive.

Full Technical Explanation

An active device in audio requires an external power source to function and typically includes internal circuitry for amplification or processing. Active speakers, for example, include built-in amplifiers and often signal processing like crossovers or EQ. This contrasts with passive systems, which rely on external components. The term applies broadly in audio gear, from loudspeakers and crossovers to DI boxes and filters. Active systems simplify setup and tuning but often trade off flexibility and repairability.