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Technical data, EASE
™
plots, SoundTubeSPEC
™
software & product downloads available at www.soundtube.com
SM400i
Surface-Mount Speaker
Technical Information for System Engineers
spectrum (up to 10 kHz, EASE
™
docu-
mented). The result is an audio system
with fewer speakers, reduced power
needs, shorter installation time and cost
savings on shipping & labor.
Patented SoundTube
Technologies
SoundTube Entertainment is con-
stantly developing new technologies that
enhance audio product performance.
SoundTube Entertainment innovations are
protected by multiple U.S. & international
patents, which explicitly cover SoundTube
dome, enclosure and dispersion technolo
-
gies. SoundTube Entertainment actively
defends its patents in order to protect
SoundTube resellers and end users.
Technical Data and
Specification Tools
Technical Data
SoundTube Entertainment strives to
provide complete and effective technical
information and data to dealers, engineers
and designers. All data are available
from SoundTube Entertainment or at
www.soundtube.com.
Data Acquisition
All performance data acquired at
SoundTube’s Technical Measurement
Center (TMC) are analyzed using a vari
-
ety of standard measurement techniques,
including Measured Length Sequence
(MLS) and Time Delay Spectrometry
(TDS). Performance, development and
data acquisition tools include: Gold Line
TEF 20, CLIO, LMS, LEAP, and propri
-
etary modeling software. EASE™ data
are acquired through an automated TEF
20/Outline/EASE
™
interface.
EASE™ Data
– 3-D polar plots.
SoundTubeSPEC™
– Proprietary
SoundTube speaker placement software.
Technical assistance:
SoundTube SPEC™ software
and engineering support
For quick and easy specification,
visit www.soundtube.com and use
SoundTube’s proprietary specification
software. For technical assistance,
including detailed EASE™ plots, con
-
tact SoundTube Entertainment directly
Polar Plots
at techinfo@soundtube.com or call us at
435-647-9555 or 800-647-8823.
Architectural Specifications
The loudspeaker shall consist of a 102 mm
(4 in) polypropylene woofer and one 25 mm
(1 in) convex aluminum tweeter with Ferro
-
Fluid cooling.
Performance specifications of a typical
production unit shall be as follows: Useable
frequency response shall extend to 73 Hz
(-10 dB, full space, no external equalization).
Measured sensitivity (2.83 Volt input, 1
meter) shall be at least 88.5 dB. The speaker
shall have a nominal impedance of 4 Ohms
and be available for 25, 70.7 & 100 Volt
modes with voice coil/4 Ohm direct. The
frequency dividing network shall have a
crossover frequency of 2.27 kHz with slopes
of 12 dB per octave (2nd order) for both low
and high pass filters. Rated power capacity
shall be at least 20 Watts continuous power
(RMS) and conform to EIA-426-B testing.
Maximum continuous output at 1 meter
shall be 98 dB.
The low-frequency transducer shall have
a polypropylene cone with butyl rubber sur
-
round. The high-frequency transducer shall
10,000 Hz
8,000 Hz4,000 Hz
2,000 Hz
1,000 Hz
500 Hz250 Hz
125 Hz
Horizontal
Vert
ical