Unlike older amplifiers, more modern home stereos and especially home theater receivers have a subwoofer output jack (or pair of jacks) dedicated to this bass signal a subwoofer uses to create sound. It also has a built-in low-pass crossover to block higher sound frequencies in order to produce clear and great-sounding bass only.įor non-powered subwoofers the problem comes when you connect one to an amplifier or receiver’s outputs without a crossover – it sounds terrible! Old amplifiers and vintage receivers vs new receivers They’re designed for only low-end bass and not voice or other musical instrument frequencies.Ī powered subwoofer includes an amplifier already inside the subwoofer enclosure. As the cone moves the air inside of a specially designed enclosure (speaker box) deep bass, contained in the musical input signal, is produced.
These types are less common.Īn amplifier boosts the low-level input signal in order to drive the subwoofer’s voice coil with sufficient power and move the speaker cone, producing sound. Passive (non-powered) subwoofers are simply a subwoofer speaker inside the bass enclosure which is directly wired to the speaker terminals or a passive bass crossover inside.
These types are one of the most common and in many cases use an RCA type input jack to connect to the receiver for sound.
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