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Soundtube SM31-EZ-WH 3in Full-Range Surface-Mount Speaker / 170Hz-14kHz / White

SKU: SM31-EZ-WH
Brand: Soundtube
$128.00
Brand Soundtube
SKU SM31-EZ-WH
Weight 2.00 lbs
Warranty 3 Years
Condition New
Status Available
Expert

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Description

The SM31-EZ-WH is a 3 inch full-range surface-mount speaker designed to deliver clear voice and music reproduction in compact indoor and outdoor installations. It provides a focused frequency response of 170 Hz-14 kHz and a nominal impedance of 8 ohm for conventional audio systems. The enclosure is low-profile and intended for locations where discreet appearance and stable performance are required.

Precision aiming is provided by an indexed swivel-joint mounting mechanism that permits full hemispherical orientation – 0 to 90 degrees vertical and 0 to 359 degrees axial. The driver is a 76.1 mm polypropylene unit with a butyl rubber surround and a 19 mm voice coil that balances sensitivity and durability. Corrosion-resistant, powder-coated aluminum grille and weatherized components make the cabinet suitable for indoor/outdoor environments.

Performance specifications include 85 dB sensitivity at 1 W/1 m and a maximum continuous RMS rating of 20 W with 40 W program power capability. Maximum SPL at 1 m is 98.0 dB, and directivity metrics indicate controlled coverage averaging 80 degrees from 2 to 10 kHz. The SM31-EZ-WH meets UL 1480 and CE requirements and is RoHS compliant.

Connection is by a screw terminal input for straightforward wiring to amplifiers and distributed audio systems. An optional transformer accessory (AC-SM31-XFMR) adds a five-position tap selector for 25V/70.7V/100V constant-voltage systems and mounts in a single-gang deep junction box. The speaker is available in black or white finishes to match venue aesthetics.

Typical applications include paging and background music in retail, hospitality, corridors, stairwells, and outdoor covered areas where compact size and controlled coverage are necessary. The measured frequency response and SPL make the SM31-EZ-WH suitable for intelligible speech reproduction and light music reinforcement. Its theft- and corrosion-resistant mounting ensures long-term reliability in public spaces.

Installation is straightforward with the included indexed swivel mounting interface and screw-terminal wiring – no specialized tools or brackets are required for basic deployment. The ABS enclosure, powder-coated grille, and weatherized internal components provide robust build quality. The SM31-EZ-WH delivers a compact, reliable solution where small footprint and consistent acoustic performance are needed.

Specifications

System Type3 in full-range surface-mount, 8 ohm, optional 10W transformer, 25V/70.7V/100V
Impedance (nominal)18 ohm
Sensitivity dB @ 2.83 V/l m85.0 dB
Sensitivity dB @ 1 W/l m285.0 dB
Frequency Response (- 3 dB)3170 Hz-14 kHz
Frequency Response (-10 dB)3120 Hz-22 kHz
Max. Program Power440 W
Max. Continuous Power RMS520 W
Max. Power SPL @ 1 m698.0 dB
Coverage Angle {-6 dB @ 2 kHz)70 deg
Coverage Angle {-6 dB @ 10 kHz)45 deg
Coverage Angle (averaged from 2 to 10 kHz)80 deg
Angle of Portability0 to 90 deg vertical, 0 to 359 deg axial
Directivity Factor (Q)4.9 avg 100Hz-10kHz, 7.1 2kHz
Directivity Index (Dl) dB5.1 avg 100Hz-10kHz, 8.5 2kHz
Tap SelectorFive-position tap switch (transformer accessory only)
Transducer - Full-Range Driver76.1 mm (3.0 in) polypropylene driver, butyl rubber surround
Low Frequency Voice Coil19.0 mm (0.75 in)
Enclosure MaterialABS
GrilleCorrosion-resistant powder-coated aluminum
InputsScrew terminal
ColorsBlack, White
Height110.4 mm (4.35 in)
Width110.4 mm (4.35 in)
Depth (including mounting bracket)96.9 mm (3.81 in)
Weight0.6 kg (1.4 lbs)
Shipping Weight0.9 kg (2.0 lbs)
PackagingOne per box
Included AccessoriesN/A
Optional Accessories10W transformer AC-SM31-XFMR, Single-gang junction box mounting plate AC-SM31-MP
Regulatory - ULUL 1480 UEAY approved
Regulatory - CECE approved
RoHSRoHS approved

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