Soundtube RS400i

The Soundtube RS400i is a pendant loudspeaker with enhanced bass response, suitable for use indoors and outdoors.

The RS 400i can be used on 70.7v or 100 volt line distributed sound systems as well as low impedance, 4 ohm background music and paging systems.

Rated at 20 watts RMS and avaialable in Black or white.

SoundTube speakers deliver more intelligible sound through Broad-Beam dispersion technology, which distributes the higher frequencies of sound in a wider, more effective pattern than conventional speakers. This allows for wider spacing of speakers and fewer speakers overall, without sacrificing intelligibility, with the added benefit of reduced installation time and associated costs.

Perfect for sound systems in shops and restaurants as well as entertainment venues, schools and colleges.

• Patented BroadBeam® waveguide technology delivers a consistent dispersion pattern for maximum intelligibility and edge-to-edge coverage (up to 10 kHz, independently verified).
• Fitted with 4" (102 mm) polypropylene woofer and 1" (25 mm) convex titanium tweeter with FerroFluid cooling.
• Weatherized components for indoor and outdoor applications.
• Includes UL listed hanging hardware with adjustable galvanized steel cables and integrated SpeedClamp™ self-locking cable grip for fast, easy and secure installation. Also includes Euroblock connector and terminal weather boot.
• Patented ZeroReflection™ enclosure technology for optimal sound reproduction and cabinet rigidity.
• Easy access five-position selectable tap switch for 25-, 70.7- and 100-volt applications with transformer bypass position simplifies ordering and inventory tracking.
• Steel grille with protective powder-coated finish for lasting durability.
• Average sensitivity of 82.5 dB offers high-output capabilities and reduced amplification costs.
• UL 1480 (UEAY) approved.
• High-quality black or white paint finish. 
• Optional accessory: AC-RS-SM5 bracket for surface-mount applications.

100V IPxx 4ohms
List Ex VAT: £196.67
Log in for Trade Prices


Frequency Response(-3 dB)

95 Hz - 20 kHz

Low Frequency(-10 dB)

76 Hz - 22 kHz



Power Capacity RMS

20 W

Max SPL dB @ 1 M

95.5 dB

Nominal Impedance

4 ohm


1" / 25 mm BroadBeam® 


4" Poly


4-pin Euroblock


223.5 mm (8.8 in)


195.6 mm (7.7 in)


2.3 kg (5 lbs)


Black or White