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terminal for 8 Ohm or distributed systems
and shall accept from 10 – 22 gauge wire.
The grille shall be constructed of pow-
der-coated steel for lasting performance
and attach via pressure fit directly to the
ABS baffle.
The system shall be the SoundTube
IW500i with mounting hardware for both
low & high impedance applications.
SoundTube Entertainment
6430 North Business Park Loop
Park City, Utah 84098
Phone 435.647.9555
Fax 435.647.9666
Toll Free 800.647.TUBE
www.soundtube.com
Architectural Specifications
The loudspeaker shall consist of a 133
mm (5.25 in) low-frequency transducer and
a 25 mm (1 in) high-frequency transducer
with a frequency-dividing network installed
to an infinite baffle. The low-frequency
transducer shall have a polypropylene cone
with a butyl rubber surround. The high-fre-
quency transducer shall be constructed of
aluminum with a proprietary BroadBeam®
waveguide. The low-frequency voice coil
diameter shall be 25.4 mm (1 in).
Performance specifications of a typical
production unit shall be as follows: Useable
frequency response shall extend from 55
Hz – 22 kHz (-10 dB, half space, no exter-
nal equalization). Measured sensitivity
(2.83 Volt, 1 meter) shall be at least 88 dB.
The speaker shall have a nominal imped-
ance of 8 Ohms and shall be available for
25/70.7/100 Volt modes with voice coil/8
Ohm direct. The frequency-dividing net-
work shall have a crossover frequency of 3
kHz with slopes of 12 dB per octave (second
order) for both low and high-pass filters.
Rated power capacity shall be at least 75
Watts continuous power (RMS) and con-
form to EIA-426-B testing. Maximum con-
tinuous output at 1 meter shall be 107 dB.
Installation for the IW500i shall be by
4-screw, optimally engineered constant-
tension mounting assembly. The external
wiring input connector shall be a spring
Phase/Impedance Reponse
Frequency Response
vations are protected by multiple U.S. &
international patents, which explicitly cover
SoundTube dome, enclosure and disper-
sion technologies. The MSE Audio Group
actively defends its patents in order to pro-
tect SoundTube resellers and end-users.
Technical Data and
Specification Tools
Technical Data
SoundTube Entertainment strives to
provide complete and effective techni-
cal information and data to dealers,
engineers and designers. All data are
available from SoundTube Entertain-
ment or at www.soundtube.com and
includes EASE™ Data – 3-D polar plots
and SoundTubeSPEC™ – Proprietary
SoundTube speaker placement software.
Independent Data Acquisition &
Verification
All data for SoundTube speakers is inde-
pendently collected from and verified by
NWAA Labs (www.nwaalabs.com) using
their proprietary MACH testing system.
All data is collected and analysed accord-
ing to ASTM, ISO and AES standards using
EASERA, TEF and MLSSA. Full balloon
data including both phase and magnitude
is compiled into a variety of formats includ-
ing EASE 4.x, GLL and CLF.
100
1000
10000
20
50
200
500
2000
5000
20000
Hertz
0
10
20
30
40
50
60
70
80
90
100
110
dBSPL
Frequency Response
100
1000
10000
20
50
200
500
2000
5000
20000
Hertz
0
8
16
24
32
40
48
56
64
Ohms
-180
-135
-90
-45
0
45
90
135
180
Phase(Degrees)
Impedance/Phase
Impedance
Phase
IW500i
In-Wall Speaker
Technical Information for System Engineers
Graphs and Plots