How many subwoofers do I need for a conference?

Conferences are a speech-first application. The job of a subwoofer here is not to shake the room, it is to add warmth and fullness to music beds, video playback, walk-in audio and any live performance elements, while never muddying the spoken word. That means you size subs conservatively and prioritise even coverage over raw output.

As a practical starting point, a single well-placed subwoofer per side, or a small centre-clustered pair, is enough for a typical conference hall of a few hundred seats running speech and light music. Larger ballrooms and plenary rooms with 1,000 or more seats usually call for two to four subwoofers, arranged to keep low-frequency energy even across the seating rather than loud at the front and thin at the back.

The number is driven by room volume, seating depth, the low-frequency target you actually need, and how the subs are arrayed. Coupling subs together increases output and extends low-frequency response, while spreading them apart can smooth coverage but risks power alleys and nulls. This is exactly the kind of problem SSOUNDS engineers model before a system ships, using AI-assisted acoustic prediction to place subwoofers and set DSP so the low end supports the message instead of competing with it.

If your conference includes significant live music or high-energy playback, treat it more like a performance system and increase subwoofer count and array design accordingly. If it is pure speech and presentation, resist the urge to over-specify: too much subwoofer in a reflective conference room creates boom and reduces intelligibility.