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Soundtube SM400i

Wide dispersion cabinet speaker. 4" driver + 1" tweeter, 20 watts, 100 volt line or 8 ohms.
List price Ex. VAT: £172.22

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Soundtube SM400i mkiI 4″ coaxial wide dispersion surface mount loudspeaker designed for both low impedance (4 ohm) and high impedance (100 volt line or 70.7 volt line) public address sound systems. Rated at 20 watts, 100 volt line or 4 ohms, low impedance.

The smart design cabinet is constructed from glass reinforced ABS and is weather resistant making it ideal for use indoors or outdoors.

The versatile mounting bracket with integral safety cable is included for an easy and flexible installation.

  • Tool-free Stealth u-bracket mounting system provides fast & secure installation included with each SM400i speaker
  • Vertical and horizontal pivoting offer precision aiming for indoor & outdoor applications
  • New speed-tap power settings save customers time and money on ordering, inventory tracking, installation and system tuning
  • 25, 70.7 and 100 Volt transformer options with coice coil / 8 Ohm direct
  • High-frequency driver protection with automatic reset
  • Durable construction, powder-coated grille, weatherized components and terminal weather boot allow for indoor or outdoor installations
  • Optional port plugs provided for added weather resistance

Additional Information

Frequency Response(-3 dB)

97 Hz - 22 kHz

Low Frequency(-10 dB)

76 Hz - 22 kHz


82.5 dB

Power Capacity RMS

20 W

Max SPL dB @ 1 M

95.5 dB

Nominal Impedance

4 ohm


1" / 25 mm Convex Aluminium w/ BroadBeam® Waveguide


4" (102mm) Poly


4-pin Euroblock


246 mm (9.68 in)


177 mm (6.97 in)


190 mm (7.47 in)


2.4 kg (5.3 lbs)


Black or White

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