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SoundTube SM52-EZ

Weather-resistant 5-1/4" 2-way surface-mount speaker for commercial sound systems (Black)

Item # 298SM52B

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Our take on the SoundTube SM52-EZ

The SoundTube SM52-EZ is a weather-resistant speaker that can be mounted horizontally or vertically, indoors or out. It features a 5-1/4" woofer and 1" soft dome tweeter that make sure customers hear music and important announcements.

Solid sound, indoors or out

The SoundTube SM52-EZ is a weather-resistant speaker that can be mounted horizontally or vertically, indoors or out. It features a 5-1/4" woofer and 1" soft dome tweeter that make sure customers hear music and important announcements.

A built-in transformer tap lets you use one amplifier to drive several speakers in an efficient distributed audio system. Mounting hardware is included.

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Product Highlights:

  • weather-resistant 5-1/4" poly woofer with butyl rubber surround
  • 1" soft dome tweeter with Broadbeam Ring™ waveguide technology for wide dispersion
  • 95° x 100° coverage area
  • built-in transformer for use with 70-volt commercial systems
    • power taps at 2, 4, 8,16 and 32 watts
    • 8-ohm transformer bypass
  • power handling: 100 watts continuous program power (when using transformer bypass)
  • frequency response: 65-20,000 Hz (±3dB)
  • maximum SPL: 101 dB
  • can be mounted horizontally or vertically with included U-bracket and hardware
  • powder-coated aluminum grille
  • 7-1/2"W x 11-15/16"H x 6-11/16"D
  • weight: 7.4 lbs.
  • warranty: 5 years
  • Our 60-day money-back guarantee

What's in the Box:

  • One surface-mount speaker
  • U-bracket
  • Back plate
  • Port plug
  • Conduit connector
  • 2 Screw caps
  • 10" Safety cable
  • 4mm Allen key
  • Two 1/2" hex-socket screws
  • Four 5/8" Phillips-head screws
  • Installation manual
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Hands-on research

Features and Specs

Drivers per speaker 2
Woofer Size (inches) 5.25
Tweeter Size (inches) 1.0
System Frequency response 65-20k
Maximum SPL 101
Power Handling
Power rating 50
Peak Power rating ---
Width (inches) 7-5/8
Height (inches) 12
Depth (inches) 6-5/8
Weight 7.4 lbs

Product Research


Overview: The Soundtube SM52-EZ is a commercial 25/70/100 volt surface mount speaker featuring a 5.25" coaxial driver mounted in a ported enclosure. Designed for both indoor and damp outdoor applications, the speaker features a full frequency dispersion pattern and a high sensitivity, making it ideal for music and paging in retail, amusement parks, airports, hotels, schools, and many applications.

Two-Way Driver Design: The SM52-EZ features a 5.25" woofer, with polypropylene cone and butyl rubber surround, with a coaxially mounted 1" soft dome tweeter. Utilizing Soundtube's BroadBeam Ring technology, the speaker offers increased midrange clarity and ultra wide off axis performance, up to 10 kHz, for maximum coverage area per speaker.

Enclosure: Available in black or white, the speaker is housed in a durable high impact polystyrene enclosure with a powder-coated aluminum grill. A back plate and conduit connector help protect the input terminal strip and tap dial from dust and moisture. The enclosure comes ported, but can be sealed with the included rubber port plug after removing the front grill. The speaker is IP65 rated for high dust and water resistance when the included port plug is installed. 

Multi-tap Transformer: The SM52-EZ includes a 50-watt multi-tap transformer for 25-, 70-, or 100-volt installations. There is also a bypass position that allows normal 8-ohm operation for installations that do not require a transformer. Tap settings are done on a rear-mounted rotary switch and include the following choices:

  • 25 Volt: 0.3W, 0.5W, 1W, 2W, and 4W
  • 70 Volt : 2W, 4W, 8W, 16W, and 32W
  • 100 Volt: 4W, 8W, 16W, and 32W
  • Bypass Setting: 8 Ohm nominal

Terminal Strip: A 4-position ceramic terminal strip is provided for wiring connections. One set of terminals provides the signal input while the other set provides a pass-thru for daisy-chaining multiple speakers. Each terminal can accommodate speaker wire up to 12 gauge in size and includes a set-screw to hold the wire firmly in place.

Mounting Bracket: The included heavy-gauge U-style mounting bracket offers great placement flexibility. It allows you to rotate the speaker almost 180° after mounting, letting you direct the sound as needed. If the speaker is mounted vertically, the bracket allows it to swivel side to side. If the speaker is mounted horizontally, the bracket allows it to swivel up and down. The speaker's shape makes corner placement easy. Once positioned, the speaker can be locked down at the desired angle with the included U-bracket screws and screw caps. A 10" safety cable is provided that attaches to the speaker enclosure on one end and the U-bracket on the other end.


  • Speaker Type: 5.25", coaxial, surface-mount
  • Woofer: 5.25" Polypropylene cone with butyl rubber surround
  • Tweeter: 1" Soft dome
  • Impedance (nominal): 8Ω
  • Sensitivity (1W @ 1M): 84dB
  • Frequency Response (-3 dB): 65Hz - 20kHz
  • Frequency Response (-10 dB): 55Hz - 20kHz
  • Maximum Program Power: 100W
  • Maximum Continuous Power: 50W
  • Maximum SPL: 101dB
  • Coverage Angle (-6dB @ 2kHz): 91˚ horizontal / 120˚ vertical
  • Coverage Angle (-6dB @ 10kHz): 70˚ horizontal / 110˚ vertical
  • Coverage Angle (Avg. 2 to 10kHz): 95˚ horizontal / 100˚ vertical
  • Crossover Frequency: 3.5kHz
  • Tap Settings:
    • 25 Volt: 0.3W, 0.5W, 1W, 2W, and 4W
    • 70 Volt: 2W, 4W, 8W, 16W, and 32W
    • 100 Volt: 4W, 8W, 16W, and 32W
    • 8Ω
  • Enclosure Material: High Impact Poly Styrene (HIPS)
  • Grill: Painted steel-mesh
  • Inputs: 4-Position ceramic terminal strip
  • Dimensions: Width - 7.625", Height - 12.0", Depth - 6.625"
  • Weight: 7.4 lbs.

Our Product Research Team

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Q & A

Customer Q&A


Looking for more? Check out the next model in this lineup.

SoundTube 8

A larger woofer and greater power handling

The SoundTube SM82-EZ-II offers these features:

8" poly woofer and 1" aluminum dome tweeter

power handling: 128 watts continuous program power (with transformer bypass)

100° x 100° coverage area


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