Open-Ceiling Speaker
RS55i
Technical Information for System Engineers
Key Features
• BroadBeam™ wide dispersion pattern
provides smooth off-axis coverage and
reduces overall system costs.
• One 130 mm (5.25 in) polypropylene
woofer and one 25 mm (1.0 in)
polypropylene FerroFluid®
Specifications: RS55i-T32
balanced-dome tweeter.
System Type
• Cast composite enclosure for enhanced
sonic presentation and bass performance.
5.25” 2-way sealed (32 Watt transformer
for 70.7/100 Volt applications)
104 Hz - 20 kHz
80 Hz - 20 kHz
65 Hz
150 W
75 W
Frequency Response (-3 dB)1
Frequency Response (-6dB)
Low Frequency (-10 dB)2
Max Program Power
Max Continuous Power RMS
Max SPL dB @ 1M
Sensitivity @ 1W/1M3
• Sealed enclosure and weather-
resistant transducers for indoor/
outdoor performance.
• Transformer-equipped models for
70.7 Volt and 100 Volt applications.
106 dB
87 dB
• Installation hardware options for over
head applications.
Impedance
8 Ohm (nominal value)
Selectable via rotary switch.
Transformer Taps
• Integrated hanging and safety cables
for easier and cleaner-looking installs.
Transformer Taps
70.7 V Output
32 W 102 dB
16 W 99 dB
8 W 96 dB
100 V Output
n/a n/a
32 W 102 dB
16 W 99 dB
8 W 96 dB
• Fine black or white paint finish, custom
color enclosure available.
Applications
4 W 93 dB
The SoundTube RS55i is a compact,
premium 2-way loudspeaker solution for
general background or satellite/subwoofer
applications. The RS55i is specifically
designed for applications requiring full-
range background music plus clear,
intelligible paging. The wide coverage
pattern makes the RS55i an ideal choice
for use in museums, retail establishments,
restaurants, outdoor applications and
open-ceiling environments.
Coverage Angle
Directivity Factor (Q)
Directivity Index (DI)
100˚
7.33 (100 Hz to 10 kHz averaged) 7.03 @ 2 kHz
7.82 dB (100 Hz to 10 kHz averaged) 8.50 dB @ 2 kHz
Transducers
Low Frequency Driver
High Frequency Driver
Crossover Frequency
1 x 130 mm (5.25 in) polypropylene cone, rubber surround
1 x 25 mm (1.0 in) polypropylene balanced-dome
3.1 kHz
Network Type
Low Pass
High Pass
Inputs
12 dB per octave, 2nd order
12 dB per octave, 2nd order
Spring terminals
Enclosure Material
Colors
Diameter
Engineered glass-fiber reinforced composite
Black or white
203 mm (8.0 in)
For applications where additional bass
is required, an RS801i SoundTube
subwoofer may be added.
Length
270 mm (10.62 in)
Net Weight
Shipping Weight
3.4 kG. (7.5 lbs)
5 kG. (9.0 lbs)
Cast Composite Enclosure
SoundTube’s RSi Series cast composite
enclosure provides a low-resonance plat-
form with effective self-damping properties
for a clean, tight sound. Compression
cast glass-fiber composite material coupled
with SoundTube’s patented ZeroReflec-
tion™ internal shaping provide extreme
stiffness, eliminating internal standing
waves and external diffraction distortions.
The result is accurate sound and tight bass
in a commercial speaker.
Accessories
Included
Optional
Hanging and Safety Cables w/ SpeedClamps™
Beam Clamp, Snap Link, Forged Eye Bolt
1
Frequency response is measured in half & full space.
Continuous power rating, EIA-426-B test.
2.83 Volts at a distance of 1 meter.
2
3
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.
© 2004 SoundTube Entertainment, Inc. All rights reserved. REV 07.20.04
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Open-Ceiling Speaker
RS55i
Technical Information for System Engineers
Horizontal One Octave Polars
125 Hz
250 Hz
500 Hz
1000 Hz
2000 Hz
4000 Hz
8000 Hz
™
™
Technical data, EASE plots, SoundTubeSPEC software & product downloads available at www.soundtube.com
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Open-Ceiling Speaker
RS55i
Technical Information for System Engineers
Mechanical Drawings
components and network shall be at least
75 Watts continuous RMS power.
The enclosure shall be constructed of a
glass-fiber reinforced composite for max-
imum performance. All transducers and
input panels are weather resistant to pro-
vide optimum sound quality for indoor
and outdoor applications. The grille shall
be constructed of heat-resistant ABS plastic
material.
The low-frequency transducer shall have
a polypropylene cone material and butyl
rubber surround that is formulated to
resist weather elements and insects. The
high-frequency transducer shall be con-
structed of a polypropylene material using
a balanced-dome configuration.
270 mm (10.62 in)
203 mm (8.0 in)
Installation shall be by a single hanging
aircraft cable with a 1/4-20 stud into
threaded insert on rear input panel. A
safety cable shall be included as a seismic/
safety redundancy system. The external
wiring input connector shall be a quick
release spring loaded terminal for 16 to 22
gauge wire. Overall cabinet dimensions
shall be no more than 203 mm (8.0 in) in
diameter, by 270 mm (10.62 in) in length,
and weigh no more than 3.4 kG (7.5 lbs.).
Installation Options
The system shall be the RS55i-T32 (trans-
former equipped) for pendant applications.
SoundTube Entertainment
6430 North Business Park Loop
Park City, Utah 84098
Hanging/Safety Cables
with SpeedClamps™
Phone 435.647.9555
Fax
435.647.9666
Toll Free 800.647.TUBE
All SoundTube products come
with a 5-year limited warranty
.
Optional Accessories
(not shown)
AC-CC-10 – 10’ adjustable Combi-Cable AC-CC-20 – 20’ adjustable Combi-Cable
AC-HK-10 – 10’ hanging cable AC-HK-20 – 20’ hanging cable AC-BC1 – Beam Clamp
AC-SL1 – Snap Link AC-FE1 – Forged Eyebolt
SoundTube Entertainment manufactures a complete line of speakers for:
Open-Ceiling • In-Ceiling • Surface-Mount • Outdoor • Sound-Focusing
All SoundTube products are designed and engineered in the USA.
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