Open-Celling Speaker
RS400i
Technical Information for System Engineers
Key Features
• BroadBeam® waveguide technology
delivers a consistent dispersion pattern
up to 10 kHz for maximum coverage
area per speaker (EASE™ documented).
• One 102 mm (4 in) polypropylene
woofer and one 25 mm (1 in) convex alu-
minum tweeter with FerroFluid cooling.
Specifications: RS400i
System Type
4” coaxial, open-ceiling, ported (20 Watt transformer
for 25/70.7/100 Volt or voice coil/4 Ohm applications)
94 Hz - 22 kHz
72 Hz
40 Watts
20 Watts
98 dB
88 dB
85 dB
• Weatherized components for indoor &
outdoor applications.
Frequency Response (- 3 dB)1
Low Frequency (-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)
• Includes hanging hardware with aircraft
cables and integrated SpeedClamp™
self-locking wire grip for fast, easy &
secure installation. Also includes Euro-
block connector & terminal weather
boot.
4 Ohm
• Patented ZeroReflection™ enclosure
technology for optimal sound reproduc-
tion & cabinet rigidity.
Coverage Angle (-6 dB @ 2 kHz)
Coverage Angle (-6 dB @ 10 kHz)
Directivity Factor (Q)
Directivity Index (DI)
Tap Selector
100º
73º
3.04 (Averaged 100 Hz - 10 kHz); 4.7 @ 2 kHz
4.1 dB (Averaged 100 Hz - 10 kHz); 6.8 dB @ 2 kHz
Weather-proof 5-position tap switch w/ voice coil/4 Ohm direct
• Easy access 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.
Transformer Taps
70.7 V
20w
10w
5w
Output
98w
95w
92w
89w
100 V
20w
10w
5w
Output
98w
95w
25 V
3w
1w
0.63w
0.31w
Output
89w
86w
83w
80w
• Iridite-plated steel grille with protective
powder-coated finish for lasting durability.
92w
• High-quality black or white paint finish.
Custom paint colors optional.
3w
• Optional surface-mount bracket.
Transducer
Low-Frequency Driver
High-Frequency Driver
Low Frequency Voice Coil
Crossover Frequency
1 x 102 mm (4 in) Polypropylene cone, butyl rubber surround
25 mm (1 in) Convex aluminum tweeter with waveguide
25 mm (1 in)
2.27 kHz
Description
The RS400 is a 4” coaxial, ported speaker
with an open-ceiling enclosure design.
Hanging hardware is included & fea-
tures a SpeedClamp™ self-locking wire
grip for fast, easy & secure installation.
SoundTube’s custom-engineered driver
and electro-acoustic network delivers
high-performance sound in a cost-effective
speaker design. The RS400i speaker incorpo-
rates a low-profile grille and a 5-position tap
switch with voice coil/4 Ohm direct.
Network Type
Low Pass
High Pass
Enclosure Material
Grille Material
Inputs
Color Options
Diameter
12 dB per octave, 2nd order
12 dB per octave, 2nd order
Injection molded ABS
Iridite-plated steel with powder-coat finish
4 Pin, 5 mm Euroblock for individual or daisy chain connection
Black, white or custom colors available
197 mm / 7.7 in
Total Height
Weight
229 mm / 9.0 in
1.8 kG / 3.9 lbs
Shipping Weight
3.2 kG / 7.1 lbs
Applications
Accessories
Included
Optional
Designed for indoor & outdoor back-
ground to mid-level SPL applications, the
RS400i includes a single-point mounting
system for rapid open-ceiling installations.
Cost-effective engineering with high-per-
formance sound makes the RS400i speaker
ideal for music & paging applications in
retail, grocery stores, restaurants, hotels,
casinos, museums, trade shows & confer-
ence rooms. For applications where addi-
tional bass is required, SoundTube’s RS801i
8” subwoofer provides bass down to 40 Hz.
Hanging hardware, Euroblock connector & terminal weather boot
Surface-mount bracket (AC-RS-SM5)
1 Per box
Packaging
1
2
3
4
Frequency response is measured in full space.
Continuous power rating, EIA-426-B test.
Average over published frequency response range.
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.
©2006 SoundTube Entertainment, Inc. All rights reserved. PN TS-CM600 REV11.13.06
Download from Www.Somanuals.com. All Manuals Search And Download.
Open-Celling Speaker
RS400i
Preliminary Technical Information for System Engineers
meter) shall be at least 88 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 con-
tinuous power (RMS) and conform to EIA-
426-B testing. Maximum continuous output
at 1 meter shall be 98 dB.
SoundTube Entertainment actively defends
its patents in order to protect SoundTube
resellers and end users.
20/Outline/EASE™ interface.
EASE™ Data – 3-D polar plots.
SoundTubeSPEC™ – Proprietary
SoundTube speaker placement software.
Technical Data and
Specification Tools
Technical assistance:
SoundTube SPEC™ software
and engineering support
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-
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
at [email protected] or call us
at 435-647-9555 or 800-647-8823.
The low-frequency transducer shall
have a polypropylene cone with butyl
rubber surround. The high-frequency
transducer shall be constructed of alu-
minum with a proprietary BroadBeam®
waveguide.
Data Acquisition
All performance data acquired at
SoundTube’s Technical Measurement
Center (TMC) are analyzed using a
variety of standard measurement tech-
niques, 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 proprietary
modeling software. EASE™ data are
acquired through an automated TEF
Architectural Specifications
Installation and safety attachment
for the RS400i shall be by aircraft cable
affixed to the speaker chassis via an
integrated forged aluminum clasp with
safety gate. The external wiring input
connector shall be a 4-pin, 5 mm Euro-
block for 4 Ohm or distributed systems
and shall accept from 10 – 22 gauge
wire. The system shall be for indoor
The loudspeaker shall consist of a
102 mm (4 in) polypropylene woofer
and one 25 mm (1 in) convex aluminum
tweeter with FerroFluid cooling.
Performance specifications of a typical
production unit shall be as follows: Use-
able frequency response shall extend to
72 Hz (-10 dB, no external equalization).
Measured sensitivity (2.83 Volt input, 1
Polar Plots
250 Hz
500 Hz
1,000 Hz
125 Hz
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Technical data, EASE plots, SoundTubeSPEC software & product downloads available at www.soundtube.com
Download from Www.Somanuals.com. All Manuals Search And Download.
Open-Celling Speaker
RS400i
Preliminary Technical Information for System Engineers
Mechanical Drawings
& outdoor applications and shall have a
weather-resistant terminal boot covering
all wire connectors.
The enclosure shall be constructed of
injection-molded ABS. The grille shall
be constructed of iridite-plated, powder-
coated steel for lasting performance in
the elements. Overall cabinet dimensions
shall be no more than 197 mm (7.7 in) in
height by 224 mm (8.8 in) in diameter. The
RS400i shall include hanging hardware,
Euroblock connector and weather-resistant
terminal boot.
228.6 mm
(9.0 in)
The system shall be the SoundTube
RS400i with hanging hardware for both
low & high impedance applications.
SoundTube Entertainment
6430 North Business Park Loop
Park City, Utah 84098
197 mm (7.7 in)
Phone 435.647.9555
Included Accessories
Fax
435.647.9666
Toll Free 800.647.TUBE
All SoundTube products come
with a 5-year limited warranty.
Hanging Hardware: Main & Safety
Cables w/ SpeedClamp™
SoundTube’s hanging cable kit incorpo-
rates hanging & safety cables & Speed-
Clamp™ self-locking cable clamps for
an integrated and easy-to-install system.
Hanging & safety cables are infinitely
adjustable to 2.74 M (9.0 ft).
Optional Accessories
Surface-Mount Bracket (AC-RS-SM5)
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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