SoundTube CM400I 4" 2-way In Ceiling Speaker with BroadBeam, Black, Single
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SoundTube CM400I 4" 2-Way In-Ceiling Speaker with BroadBeam, 20W RMS, Black, Single

SKU: SOCM400IBK MFR: CM400I-BK
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Key Features

  • Experience exceptional audio with this SoundTube in-ceiling speaker system.
  • Enjoy wide sound dispersion with BroadBeam technology for immersive sound.
  • This 4" speaker delivers clear audio, perfect for background music or paging.
  • Easy to install with a tile bridge and Euroblock connector for quick setup.
  • Durable steel & ABS construction ensures lasting performance for years to come.
  • Optimize sound with adjustable tap selector for tailored audio experiences.
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Special Order?Estimated to Ship: 08/19/2025
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SoundTube CM400I Specifications

  • System Type

    4" coaxial, in-ceiling, ported (20W transformer for 25-;70.7-, 100V or transformer bypass)

  • Impedance

    4 Ohms (nominal)

  • Sensitivity

    90.0dB At 2.83 V/1m
    87.0dB At 1W/1m

  • Frequency Response

    90 Hz - 22 kHz(- 3dB)
    75 Hz - 22 kHz(-10dB)

  • Max. Program Power

    40W

  • Max. Continuous Power RMS

    20W

  • Max. Power SPL

    At 1m: 100.0dB

  • Coverage Angle

    100 deg. (-6dB at 2 kHz)
    65 deg. (-6dB at 10 kHz)
    95 deg. (Avg. 2 - 10 kHz)

  • Directivity Factor (Q)

    4.6 (avg. 100 Hz - 10 kHz); 4.3 (2 kHz)

  • Directivity Index (DI)

    5.6dB (avg. 100 Hz - 10 kHz); 6.3dB (2 kHz)

  • Tap Selector

    Five-position rotary switch with transformer bypass

  • Transducer

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

  • Low-Frequency Voice Coil

    19.0mm (0.75")

  • Crossover Frequency

    1.8 kHz

  • Network Type

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

  • Enclosure Material

    Drawn steel backcan with ABS baffle

  • Grille

    Powder coated steel with integrated ABS bezel

  • Inputs

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

  • Mounting Hole Diameter

    167.6mm (6.60")

  • Min / Max Ceiling Thickness

    0.6mm (0.025") / 47.5mm (1.87")

  • Regulatory

    UL 1408 (UEAY), 2043 Approved; CE Approved

  • RoHS

    Approved

  • Dimensions (Dia.xH)

    Backcan: 153.7 x 166.4mm (6.05 x 6.55")
    Visible: 207.0 x 11.9mm (8.15 x 0.47")

  • Weight

    2.5kg (5.5 lbs)

  • UPC Code

    752830440487

About SoundTube CM400I

The CM400i is a 4", two-way, blind mount in-ceiling speaker that delivers effective low-end response (75 Hz, -10 dB) and optimal off-axis performance (2 to 10 kHz, independently verified). The CM400i speaker design incorporates a low-profile grille and five-position tap switch with a transformer bypass position. Mounting hardware is included and features a fast and secure constant-tension fixed-wing mounting system.

Applications
Designed for in-ceiling background to mid-level SPL applications, the CM400i is ideal for music and paging in courthouses, schools, retail stores, grocery, restaurants, hospitals, hotels, casinos, museums, conference rooms and churches. For applications where additional bass is required, SoundTube's CM1001d-T or SM1001p 10" subwoofers provide additional low-end response down to 41 Hz (-10 dB).

SoundTube CM400I Features

  • One 4.0" (102mm) polypropylene woofer and one 1.0" (25mm) convex aluminum tweeter with FerroFluid cooling
  • Rapid installation blind-mount, fixedwing mounting mechanism with constant tension design affixing to ceiling thicknesses ranging from 0.025" (0.6mm) to 1.87" (47.5mm)
  • Easy access five-position selectable tap switch for 25-, 70.7- and 100-volt applications with transformer bypass position
  • Separate tool-free magnetic grille and bezel assembly for ease of install and in-field painting
  • Powder-coated steel grille for lasting durability
  • 90dB average sensitivity offers high-output capabilities and reduced amplification costs
  • High-quality black painted finish

Warranty Information

This product has a limited warranty of 60 months.

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Key Features

  • Experience exceptional audio with this SoundTube in-ceiling speaker system.
  • Enjoy wide sound dispersion with BroadBeam technology for immersive sound.
  • This 4" speaker delivers clear audio, perfect for background music or paging.
  • Easy to install with a tile bridge and Euroblock connector for quick setup.
  • Durable steel & ABS construction ensures lasting performance for years to come.
  • Optimize sound with adjustable tap selector for tailored audio experiences.

What's in the box:

  • SoundTube CM400I 4 " 2-Way In Ceiling Speaker
  • Tile Bridge
  • Euroblock Connector
  • UL Cover Plate
  • SoundTube 5 Year Limited Warranty