Specifications: SM400i
System Type
Frequency Response (-3 dB)1
Low Frequnecy (-10 dB)1
Max. Program Power
Max. Continuous Power RMS2
Max. SPL dB @ 1 M
Sensitivity dB @ 1W/1M (2.83V)3
Sensitivity dB @ 1W/1M4
Impedance (nominal)
Coverage Angle (-6 dB @ 2 kHz)
Coverage Angle (-6 dB @ 10 kHz)
Directivity Factor (Q)
Directivity Index (DI)
Tap Selector
Transformer Taps
Transducers
Low-Frequency Driver
High-Frequency Driver
Low Frequency Voice Coil
Crossover Frequency
Network Type
Low Pass
High Pass
Enclosure Material
Grille Material
Inputs
Color Options
Width
Height
Depth (Including Bracket)
Weight
Shipping Weight
Accessories
Included
Optional
Packaging
4” Coaxial, surface mount, ported (25/70.7/100 Volt or
voice coil / 4 Ohm direct)
92 Hz - 22 kHz
73 Hz
40 Watts
20 Watts
98 dB
88.5 dB
85 dB
4 Ohm
92º
71º
2.89 (Averaged 100 Hz - 10 kHz); 5.1 @ 2 kHz
4.0 dB (Averaged 100 Hz - 10 kHz); 7.0 dB @ 2 kH
Weather-proof 5-position tap switch
with voice coil/4 Ohm direct position
1 x 102mm (4in) Polypropylene cone, butyl rubber surround
25mm (1in) Convex aluminum tweeter with waveguide
25 mm (1 in)
2.27 kHz
12 dB per octave, 2nd order
12 dB per octave, 2nd order
Injection molded ABS, glass fiber reinforced
Iridite-plated aluminum with powder-coat finish
4 Pin, 5 mm Euroblock for individual or daisy chain connection
Black, white or custom colors available
177 mm / 6.97 in
246 mm / 9.68 in
190 mm / 7.47 in
1.8 kg / 3.9 lb
3.2 kg / 7.1 lb
Corrosion- & theft resistant u-bracket mount with safety cable,
Euroblock connector, terminal weather boot, port plugs.
Paint mask
1 per box
©2006 SoundTube Entertainment, Inc. All rights reserved. PN TS-SM400 REV 11.13.06
Key Features
• BroadBeam® waveguide tec hnology
delivers a consistent dispersion pattern
up to 10 kHz for maximum coverage
area per speaker (EASE™ documented).
• One 102 mm (4 in) polypropylene woof-
er and one 25 mm (1 in) convex alumi-
num tweeter with FerroFluid cooling.
• Weatheriz ed components for indoor &
outdoor applications.
• Patented ZeroReflec tion™ enclosure
technology for optimal sound reproduc-
tion & cabinet rigidity.
• Easy acce ss 5-position selectable tap
switch for 25, 70.7 and 100 Volt applica-
tions with voice coil/4 Ohm direct sim-
plifies ordering & inventory tracking.
• Ir idite-plated aluminum grille with pro-
tective powder-coated finish for lasting
durability.
• Weatheriz ed components for indoor /
outdoor applications. Includes a tool-
free Stealth™ u-bracket mounting system
for fast & secure installation. Included
accessories: Mounting hardware, Euro-
block connector, & terminal weather boot.
• Vertical a nd horizontal mounting offer
precision aiming for indoor & outdoor
applications.
• Hig h quality black or white paint finish.
Custom colors available.
• Opt ional port plugs are included for
added weather resistance.
Description
The SM400i is a 4” coaxial, porte d
speaker with a low-prof ile surface-mount
enclosure design for indoor/outdoor
applications. Mountin g hardware is
included & features a corrosion- and
theft-resistant Stea lth-Bracket™ for easy &
secure insta llation. Nearly invi sible from
sightlines, the St ealth-Bracket™ includes
uni-directio n fasteners for tool-f ree, theft-
resistant secur ity. SoundTube’s custom-
engineered driver and electro-ac oustic
network deliver high-performance sound
in a cost-effective surface-mount speaker
design. The SM400i speaker incorporates a
5-position tap switch with voice coil/4 Ohm
direct for simplified ordering and stocking.
Provided port plugs can be used for added
weather resisitance.
SM400i
Surface-Mount Speaker
Technical Information for System Engineers
Mounting hardware included
1
Frequency response is measured in Full space.
2
Continuous power rating, EIA-426-B test.
3
Average over published frequency response range.
4
1w1m sensitivity based on voltage required to yield 1w based on the minimum system impedance.
SoundTube continually develops new product innovations and improvements. Updates to existing
products without prior notice are an example of SoundTube’s drive for constant improvement.
70.7 V Output 100 V Output 25 V Output
20w 98.0dB 20w 98.0dB 3w 89w
10w 94.9dB 10w 94.9dB 1w 86w
5w 91.9dB 5w 91.9dB 0.63w 83w
3w 88.9dB 0.31w 80w