The SoundTube SM31-EZ is a compact 3" surface-mount speaker designed for clear speech, background music, and paging in commercial audio environments. Its low-profile enclosure and BroadBeam® technology deliver smooth, even audio coverage, making it ideal for retail stores, offices, hallways, hospitality spaces, and any application requiring high intelligibility from a small-footprint speaker.
The SM31-EZ features a 3" polypropylene driver, built-in transformer with multiple tap settings, and SoundTube’s proprietary mounting bracket for fast, secure installation. Available in black or white, this speaker blends easily into any architectural environment and offers reliable long-term performance for 25V, 70V, and 100V distributed audio systems.
SoundTube SM31-EZ Key Features
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3" polypropylene driver for clear voice and music reproduction
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BroadBeam® technology ensures wide, consistent coverage
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Surface-mount enclosure ideal for low-profile or architectural applications
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Built-in transformer for 25V/70V/100V systems with multiple tap settings
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Rugged ABS housing with attractive paintable finish
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Fast, secure installation using SoundTube’s proprietary mounting system
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Available in black or white to match any environment
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Perfect for paging, voice announcements, and ambient music
Ideal Applications
The SoundTube SM31-EZ is an excellent fit for:
SoundTube SM31-EZ Specifications
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Specification
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Details
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Driver
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3" (76 mm) polypropylene cone
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Frequency Response
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~ 125 Hz – 20 kHz (varies by model verification)
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Sensitivity
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86–88 dB (typical for this model range)
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Power Handling
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15–30 W (depending on transformer tap)
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Transformer Taps
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25V/70V/100V multi-tap
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Enclosure Material
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ABS plastic
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Mounting System
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Surface-mount with pivoting bracket
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Colors
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Black or White (paintable)
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Applications
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Voice, paging, background music
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Inputs
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Euroblock connector
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