SoundTube SM400I 4" Surface Mount Speaker, Black, Single
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SoundTube SM400I 4" Surface Mount Speaker, 20W RMS, Black, Single

SKU: SOSM400IBK MFR: SM400I-BK
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Key Features

  • Experience superior audio with this SoundTube surface mount speaker, perfect for any space.
  • Enjoy clear, crisp sound from 97 Hz - 22 kHz, ideal for immersive home theater audio.
  • This durable speaker is weather-resistant, ensuring long-lasting performance indoors or out.
  • Achieve optimal sound coverage with a wide 125° x 165° dispersion angle for balanced audio.
  • Customize your sound with a five-position tap switch, including a transformer bypass option.
  • Easy to install with a corrosion/theft-resistant bracket & Euroblock connector for secure setup.
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Special Order?Estimated to Ship: 09/14/2025
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SoundTube SM400i Specifications

  • System Type

    4", coaxial, surface-mount, ported (20W transformer for 25/70.7/100V or transformer bypass)

  • Impedance

    4 Ohms (Nominal)

  • Sensitivity

    At 2.83V/1m: 85.5 dB
    At 1W/1m: 82.5 dB

  • Frequency Response

    97 Hz - 22 kHz (-3 dB)
    76 Hz - 22 kHz (-10 dB)

  • Max. Program Power

    35W

  • Max. Continuous Power RMS

    20W

  • Max. SPL

    At 1m: 95.5 dB

  • Coverage Angle

    125 deg. horizontal / 165 deg. vertical (-6 dB at 2 kHz)
    75 deg. horizontal / 70 deg. vertical (-6 dB at 10 kHz)
    125 deg. horizontal / 125 deg. vertical (Ave from 2 to 10 kHz)

  • Angle of Pointability

    0 to 90 deg. horizontal

  • Directivity Factor (Q)

    3.7dB (Averaged 100 Hz - 10 kHz); 3.9dB at 2 kHz

  • Directivity Index (DI)

    4.9 dB (Averaged 100 Hz - 10 kHz); 5.9 dB at 2 kHz

  • Tap Selector

    Weather-proof, five-position tap switch with transformer bypass position

  • Frequency Driver

    Low-Frequency Driver: 102mm (4") polypropylene cone, butyl rubber surround
    High-Frequency Driver: 25mm (1") convex titanium tweeter with waveguide

  • Low Frequency Voice Coil

    25mm (1")

  • Crossover Frequency

    2.27 kHz

  • Network Type

    Low-Pass: 12 dB per octave, 2nd order
    High-Pass12 dB per octave, 2nd order

  • Enclosure Material

    Injection-molded ABS, glass fiber reinforced

  • Grille Material

    Powder-coated aluminum

  • Inputs

    Four-pin, 5.08mm Euroblock for individual or daisy chain connection

  • Regulatory

    1480 (UEAY) Approved; CE Approved

  • RoHS

    Approved

  • Dimensions (HxWxD)

    Including Bracket: 246 x 177 x 190mm (9.69 x 6.97 x 7.48")

  • Weight

    2.4kg (5.3 lbs)

  • UPC Code

    644216203208

About SoundTube SM400i

The SM400i is a 4", coaxial, ported speaker with a low-profile surface-mount enclosure design for indoor/outdoor applications that delivers a consistent dispersion pattern (2 to 10 kHz, independently verified.) Mounting hardware is included and features a corrosion and theft resistant Stealth U-bracket for easy and secure installation. Nearly invisible from sightlines, the Stealth U-bracket includes one way fasteners for tool-free, theft-resistant security. SoundTube's custom-engineered driver and electro-acoustic network deliver high-performance sound in a cost-effective surface-mount speaker design.

The SM400i speaker incorporates a five-position tap switch with transformer bypass position for simplified ordering and stocking. Included port plugs can be used for added weather resistance.

Applications
Engineered with professional grade components, the SM400i delivers high-quality music and messaging for indoor and outdoor background to mid-level SPL applications. Cost-effective engineering with high-performance sound makes the SM400i speaker ideal for applications including retail, grocery stores, restaurants, hotels, casinos, museums, trade shows and conference rooms. For applications where additional bass is required, SoundTube's RS1001i-II-T and SM1001p subwoofers provide bass down to 41 Hz.

SoundTube SM400i Features

  • BroadBeam waveguide technology delivers a consistent dispersion pattern up to 10 kHz for maximum coverage area per speaker (independently verified)
  • One 4" (102mm) polypropylene woofer and one 1" (25mm) convex titanium tweeter with FerroFluid cooling
  • Includes port plugs and weatherized components for indoor and outdoor applications
  • Patented ZeroReflection enclosure technology for optimal sound reproduction and cabinet rigidity
  • Easy access, five-position selectable tap switch for 25-, 70.7- and 100V applications with transformer bypass position
  • Iridite-plated aluminum grille with protective powder-coated finish for lasting durability
  • Includes a tool-free Stealth U-bracket mounting system for fast and secure installation
  • Vertical and horizontal mounting offer precision aiming for indoor and outdoor applications
  • High quality black paint finish

Warranty Information

This product has a limited warranty of 60 months.

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Key Features

  • Experience superior audio with this SoundTube surface mount speaker, perfect for any space.
  • Enjoy clear, crisp sound from 97 Hz - 22 kHz, ideal for immersive home theater audio.
  • This durable speaker is weather-resistant, ensuring long-lasting performance indoors or out.
  • Achieve optimal sound coverage with a wide 125° x 165° dispersion angle for balanced audio.
  • Customize your sound with a five-position tap switch, including a transformer bypass option.
  • Easy to install with a corrosion/theft-resistant bracket & Euroblock connector for secure setup.

What's in the box:

  • SoundTube SM400I 4 " Surface Mount Speaker
  • Corrosion and Theft-Resistant U-Bracket Mount with Safety Cable
  • Euroblock Connector
  • Paint Mask
  • Terminal Weather Boot
  • Port Plugs
  • SoundTube 5 Year Limited Warranty