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SoundTube 3" Surface Mount Speaker in White

SoundTube SM31-EZ Surface Mount Speaker in White

The SM31-EZ is a premium full range 3 inch surface mount speaker, with overall dimensions smaller than a 4 inch sphere. The speaker incorporates a theft and corrosion resistant mounting mechanism with indexed swivel joint for complete hemispherical aiming. SM31-EZ speaker components have been weatherized for indoor and outdoor applications. The SM31-EZ is an 8 ohm speaker with an ultra-low profile ZeroReflection ABS enclosure (4 inch diameter by 3.5 inch deep, including mounting plate).

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About SoundTube
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Manufacturer's CategorySM-EZ Economical Surface Mounts
Height4.35 in / 110.5 mm
Width/Diameter4.35 in / 110.5 mm
Shipping Weight1.85 lbs / 0.84 kg
Carton Height6.25 in / 158.75 mm
Carton Length6.5 in / 165.1 mm
Carton Width6.25 in / 158.75 mm
CertificationsCE, RoHS, UL1480A
Enclosure PropertiesABS Glass Fiber Reinforced, Injection Molded, Sealed
Enclosure Volume60 cu in / 983.22 cu cm
Optional AccessoriesJunction Box (AC-SM31-JBOX)|White Transformer (AC-SM31-XFMR-WH)|White Wall Plate (AC-SM31-MP-WH)|White Grille (GRL-RS31-WH)
Source InputsTerminal Strip
Coverage Angle (-6dB @ 2kHz) 43°
Directivity Factor (Q) (Averaged 100Hz - 10kHz, @ 2kHz)4.9 and 7.1
Directivity Index (DI) dB (Averaged 100Hz - 10kHz, @ 2kHz)5.1dB and 8.5dB
Frequency Response (± 10 dB)120 Hz - 22 kHz
Frequency Response (± 3 dB)170 Hz - 14 kHz
Grille PropertiesAluminum, Powder-Coated
Low Frequency Voice Coil0.75 in / 19 mm
Magnetically BoostedNo
Max. Continuous Power RMS20W
Max. Program Power40 W
Minimum Impedance (Ω Ohms)8 Ω
Mounting Depth3.81 in / 96.8 mm
Nominal Impedance (Ω Ohms)8 Ω
Fullrange Driver3" Polypropylene driver with butyl rubber surround
Sensitivity dB @ 1W/1M85 dB
Sensitivity dB @ 2.83V/1M85 dB
Transformer Options25 / 70.7 / 100 V
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