SoundTube SM52-EZ Outdoor Surface Mount Speaker in Black

The SM52-EZ is an economical solution for integrators who need a surface-mount indoor or outdoor speaker option for music and paging applications. The speaker incorporates a dedicated 5.25 inch polypropylene woofer and an offset 1 inch soft dome tweeter with Waveguide to deliver superb intelligibility for background to foreground music and messaging (up to 100.0 dB max. SPL). 


SoundTube’s proprietary BroadBeam Ring technology in all models ensures high intelligibility, even well off-axis. Enclosures for the SM52-EZ are ported, with port plugs included for outdoor use; grilles and mounting hardware are powder coated aluminum. With its 32 watt transformer and 6 position tap switch, the SM52-EZ offers 25.5 V, 70.7 V and 100 V operation with an 8 ohm bypass. Inputs are made via ceramic terminal strips, making these speakers suitable for European voice evacuation systems. A safety cable, wall mount bracket, conduit connector and port hole plug are all included.

  • ColorBlack
    Manufacturer’s Suggested Retail Price 
    Manufacturer’s CategorySM-EZ Economical Surface Mount
    Height11.88 in / 301.8 mm
    Width/Diameter7.5 in / 190.5 mm
    Shipping Weight8.95 lbs / 4.06 kg
    Carton Height12 in / 304.8 mm
    Carton Length15.25 in / 387.35 mm
    Carton Width10.5 in / 266.7 mm
    CertificationsCE, EN54, IP65, RoHS, UL1480A
    Enclosure PropertiesPolystyrene, Ported
    Included AccessoriesBack Cover, Mounting Hardware, Port Plug, Safety Cable, Wire Gland
    Optional AccessoriesBlack Surface Mount Bracket (AC-SMB-SM52-SS-BK)
    Source Inputs4 Pin Ceramic Terminal
    Crossover Frequency3.5 kHz
    Directivity Factor (Q) (Averaged 100Hz – 10kHz, @ 2kHz)6.9 and 5.9
    Directivity Index (DI) dB (Averaged 100Hz – 10kHz, @ 2kHz)5.2dB and 7.7dB
    Frequency Response (± 10 dB)55 Hz – 22 kHz
    Frequency Response (± 3 dB)65 Hz – 20 kHz
    Grille PropertiesAluminum, Powder-Coated
    Low Frequency Voice Coil1 in / 25.4 mm
    Low Pass Crossover12 dB per octave 2nd order
    Magnetically BoostedNo
    Max. Continuous Power RMS50W
    Max. Program Power100 W
    Minimum Impedance (Ω Ohms)8 Ω
    Mounting Depth6.63 in / 168.4 mm
    Network Type: High Pass12 dB per octave 2nd order
    Nominal Impedance (Ω Ohms)8 Ω
    Tweeter Driver1″ Soft Dome
    Woofer Driver5.25″ Polypropylene
    Sensitivity dB @ 1W/1M84 dB
    Sensitivity dB @ 2.83V/1M84 dB
    Tap SelectorRotary Switch
    Transformer Options25 / 70.7 / 100 V, 8 Ohm direct