Open-Celling Speaker
RS4-EZ
Technical Information for System Engineers
Key Features
• One 101 mm (4 in) full-range, treated
fiber driver mounted to an ABS baffle.
Specifications: RS4-EZ
• Weatherized components for indoor &
outdoor applications.
System Type
4” Full-range, open-ceiling, ported (20 Watt transformer
for 25/70.7/100 Volt or voice coil/8Ohm applications)
• Includes hanging hardware with aircraft
cables and integrated SpeedClamp™
self-locking wire grip for fast, easy &
secure installation. Also includes Eurob-
lock connector & terminal weather boot.
• Patented ZeroReflection™ enclosure tech-
nology for optimal sound reproduction
& cabinet rigidity.
Frequency Response (- 3 dB)1
Low Frequency (-10 dB)1
Max. Program Power
Max. Continuous Power2
Max. SPL dB @ 1 M
Sensitivity dB @ 1W/1M3
Impedance (nominal)
Tap Selector / Inputs
94 Hz - 13 kHz
69 Hz - 22 kHz
40 Watts
20 Watts
104.5 dB
91.5 dB (average over published frequency response range, 2.83V)
8 Ohm (nominal)
5-Position rotary switch with voice coil direct (8 Ohm)
Coverage Angle (-6 dB @ 2 kHz)
Directivity Factor (Q)
Directivity Index (DI)
160º
• Easy access 5-position selectable tap
switch for 25, 70.7 and 100 Volt applica-
tions with voice coil/8 Ohm direct sim-
plifies ordering & inventory tracking.
6.66 (Averaged 100 Hz - 10 kHz); 3.52 @ 2 kHz
6.80 dB (Averaged 100 Hz - 10 kHz); 5.47 dB @ 2 kHz
Transformer Taps
70.7 V
20 W
10 W
5 W
Output
100 V
20 W
10 W
5 W
Output
104.5 dB
101.5 dB 1.25 W
98.5 dB
25 V
2.5 W
Output
• Iridite-plated steel grille with protective
powder-coated finish for lasting durability.
104.5 dB
101.5 dB
98.5 dB
95.5 dB
95.5 dB
92.5 dB
89.5 dB
86.5 dB
• 91.5 dB average sensitivity offers high-
output capabilities & reduced amplifica-
tion costs.
0.63 W
0.31 W
2.5 W
• High-quality black or white paint finish.
Transducer
Low-Frequency Driver
1 x 101 mm (4.0 in) Extended-range paper cone,
treated cloth surround
Description
Enclosure Material
Grille
Inputs
Color Options
Diameter
Total Height
Weight
Injection molded ABS, glass fiber reinforced
Iridite-plated, steel with powder-coat finish
4 Pin, 5 mm Euroblock for individual or daisy chain connection
Black or white
197 mm / 7.7 in
224 mm / 8.8 in
The RS4-EZ is a 4.0” extended-range
ported speaker with an open-ceiling
enclosure design. Hanging hardware is
included and features SpeedClamp™
self-locking wire grip for fast, easy and
secure installation. SoundTube’s custom-
engineered driver and electro-acoustic
network delivers high-performance sound
in a cost-effective speaker design. The
RS4-EZ speaker incorporates a low-profile
grille and a 5-position tap switch with
voice coil/8 Ohm direct.
1.8 KG / 3.9 lbs
3.1 hG / 6.8 lbs
Shipping Weight
Accessories
Included
Optional
Hanging hardware, Euroblock connector & terminal weather boot
N/A
1 Per box
Packaging
Applications
Designed for indoor and outdoor back-
ground to mid-level SPL applications, the
RS4-EZ includes a single-point mounting
system for rapid open-ceiling installations.
Cost-effective engineering with high-per-
formance sound makes the RS4-EZ speaker
ideal for music & paging applications in
retail, grocery stores, restaurants, hotels,
casinos, museums, trade shows and confer-
ence rooms. For applications where addi-
tional bass is required, SoundTube’s RS801i
8” subwoofer provides bass down to 40 Hz.
1
2
3
Frequency response is measured in full space and includes a low-frequency peak > + 3 dB.
Continuous power rating, EIA-426-B test.
2.83 Volts at a distance of 1 meter.
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 REV 3.03.06
Open-Celling Speaker
RS4-EZ
Technical Information for System Engineers
The system shall be the SoundTube
RS4-EZ with hanging hardware for both
low and high impedance applications.
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
20/Outline/EASE™ interface.
testing. Maximum continuous output
at 1 meter shall be 104.5 dB.
The transducer shall have a treated fiber
cone with a treated cloth surround and
mated to an ABS baffle.
SoundTube Entertainment
6430 North Business Park Loop
Park City, Utah 84098
Phone 435.647.9555
Installation and safety attachment
for the RS4-EZ 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 8 Ohm or distributed systems
and shall accept from 10 – 22 gauge
wire. The system shall be for indoor &
outdoor applications and shall have a
weather-resistant terminal boot cover-
ing all wire connectors.
EASE™ Data – 3-D polar plots.
Fax
435.647.9666
Toll Free 800.647.TUBE
SoundTubeSPEC™ – Proprietary
SoundTube speaker placement software.
All SoundTube products come
with a 5-year limited warranty.
Architectural Specifications
Theloudspeakershallconsistofa101mm
(4 in) full range driver.
Performance specifications of a
typical production unit shall be as fol-
lows: Useable frequency response shall
extend from 69 Hz – 22 kHz (-10 dB,
half space, no external equalization).
Measured sensitivity (2.83 Volt input,
1 meter) shall be at least 91.5 dB. The
speaker shall have a nominal imped-
ance of 8 Ohms and be available for 25,
70.7 & 100 Volt modes with voice coil/8
Ohm direct. Rated power capacity
shall be at least 20 Watts continuous
power (RMS) and conform to EIA-426-B
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 dimen-
sions shall be no more than 197 mm (7.7
in) in height by 224 mm (8.8 in) in diam-
eter. The RS4-EZ shall weigh no more
than 1.8 kG (3.9 lbs) and shall include
hanging hardware, Euroblock connector
and weather-resistant terminal boot.
Polar Plots
250 Hz
500 Hz
1,000 Hz
125 Hz
4,000 Hz
8,000 Hz
10,000 Hz
2,000 Hz
™
™
Technical data, EASE plots, SoundTubeSPEC software & product downloads available at www.soundtube.com
Open-Celling Speaker
RS4-EZ
Technical Information for System Engineers
Mechanical Drawings
224 mm
(8.8 in)
197 mm (7.7 in)
Included Accessories
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).
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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