Phase Technology RS55i User Manual
Rs55i, Open-ceiling speaker
© 2004 SoundTube Entertainment, Inc. All rights reserved. REV 07.20.04
Specifications: RS55i-T32
System Type
5.25” 2-way sealed (32 Watt transformer
for 70.7/100 Volt applications)
Frequency Response (-3 dB)
1
104 Hz - 20 kHz
Frequency Response (-6dB)
80 Hz - 20 kHz
Low Frequency (-10 dB)
2
65 Hz
Max Program Power
150 W
Max Continuous Power RMS
75 W
Max SPL dB @ 1M
106 dB
Sensitivity @ 1W/1M
3
87 dB
Impedance
8 Ohm (nominal value)
Transformer Taps
Selectable via rotary switch.
Transformer Taps
70.7 V
Output
100 V Output
32 W
102 dB
n/a n/a
16 W
99 dB
32 W 102 dB
8 W
96 dB
16 W 99 dB
4 W
93 dB
8 W 96 dB
Coverage Angle
100˚
Directivity Factor (Q)
7.33 (100 Hz to 10 kHz averaged) 7.03 @ 2 kHz
Directivity Index (DI)
7.82 dB (100 Hz to 10 kHz averaged) 8.50 dB @ 2 kHz
Transducers
Low Frequency Driver
1 x 130 mm (5.25 in) polypropylene cone, rubber surround
High Frequency Driver
1 x 25 mm (1.0 in) polypropylene balanced-dome
Crossover Frequency
3.1 kHz
Network Type
Low Pass
12 dB per octave, 2nd order
High Pass
12 dB per octave, 2nd order
Inputs
Spring
terminals
Enclosure Material
Engineered glass-fiber reinforced composite
Colors
Black or white
Diameter
203 mm (8.0 in)
Length
270 mm (10.62 in)
Net Weight
3.4 kG. (7.5 lbs)
Shipping Weight
5 kG. (9.0 lbs)
Accessories
Included
Hanging and Safety Cables w/ SpeedClamps™
Optional
Beam Clamp, Snap Link, Forged Eye Bolt
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
®
balanced-dome tweeter.
• Cast composite enclosure for enhanced
sonic presentation and bass performance.
• Sealed enclosure and weather-
resistant transducers for indoor/
outdoor performance.
• Transformer-equipped models for
70.7 Volt and 100 Volt applications.
• Installation hardware options for over
head applications.
• Integrated hanging and safety cables
for easier and cleaner-looking installs.
• Fine black or white paint finish, custom
color enclosure available.
Applications
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.
For applications where additional bass
is required, an RS801i SoundTube
subwoofer may be added.
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.
1
Frequency response is measured in half & full space.
2
Continuous power rating, EIA-426-B test.
3
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.
RS55i
RS55i
Open-Ceiling Speaker
Technical Information for System Engineers