A PA subwoofer is a dedicated low frequency speaker that handles the bass end of a sound system, freeing the top boxes to focus on mids and highs, in active or passive form.
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About PA Subwoofers
A PA subwoofer is a dedicated low-frequency speaker that handles the bass end of your sound system. Handing the lows to a large cone driver frees up your powered speakers or top boxes to focus on mids and highs, giving the whole mix more clarity and punch. It also gives you independent control over the bass level, so you can tune the balance to suit the room and the music.
The range covers active subwoofers with built-in amplification and passive subwoofers for systems running a separate power amplifier, in 12 inch, 15 inch and 18 inch sizes from Vonyx and Power Dynamics. A 12 inch sub suits compact mobile setups, 15 inch models are a strong all-rounder, and 18 inch subs deliver the deepest bass for dance floors and larger venues. Building a complete rig from scratch? See our PA speaker packages.
PA Subwoofer FAQs
What is the difference between active and passive PA subwoofers?
An active subwoofer, also called a powered subwoofer, has a power amplifier built in, so it only needs mains power and a line-level signal. A passive subwoofer needs a separate power amplifier matched to its power handling and impedance, which suits larger installed systems.
What size PA subwoofer should I choose?
A 12 inch sub suits compact mobile PA rigs and small venues, 15 inch is the popular all-round choice, and 18 inch delivers the deepest, loudest bass for DJs and bigger rooms. Larger drivers move more air but add size and weight.
Do I really need a subwoofer in a PA system?
For speech alone, usually not. For music playback, DJ sets and live bands, a subwoofer takes the strain off your top speakers, adds clarity across the whole mix and gives you separate control over the bass level.
