In-Ceiling Speaker
CM500i
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 133 mm (5.25 in) polypropylene
woofer and one 25 mm (1.0 in) convex
aluminum tweeter with FerroFluid™
cooling mounted to a proprietary cast-
aluminum M5™ baffle and heat sink.
Tile bridge included
Specifications: CM500i
System Type
5.25” Coax, in-ceiling, ported (33 Watt transformer for
25/70.7/100 Volt or voice coil/8 Ohm direct)
Frequency Response (- 3 dB)1
Low Frequency (-10 dB)1
Max. Program Power
Max. Continuous Power RMS2
Max. UL Power Rating3
Max. SPL dB @ 1 M
Sensitivity dB @ 1W/1M4
Impedance (nominal)
Coverage Angle (-6 dB @ 2 kHz)
Coverage Angle (-6 dB @ 10 kHz)
Directivity Factor (Q)
78 Hz - 22 kHz
55 Hz - 22 kHz
150 Watts
75 Watts
50 Watts
107.5 dB
88.5 dB
8 Ohm (nominal value)
• Rapid installation blind-mount, fixed-
wing mounting mechanism with con-
stant tension design affixing to ceiling
thickness tolerances ranging from 6.4
mm (0.25 in) to 42.9 mm (1.69 in).
• Separate tool-free magnetic grille &
bezel assembly for ease of install &
in-field painting.
140º
105º
• Iridite-plated steel grille with protec-
tive powder-coated finish for lasting
durability.
4.82 (Averaged 100 Hz - 10 kHz); 5.78 @ 2 kHz
6.21 dB (Averaged 100 Hz - 10 kHz); 7.62 dB @ 2 kHz
6-Position rotary switch with voice coil/8 Ohm direct
Directivity Index (DI)
Tap Selector
• Easy access 6-position selectable tap
switch for 25, 70.7 and 100 Volt applica-
tions with voice coil/8 Ohm direct sim-
plifies ordering & inventory tracking.
Transformer Taps
70.7 V Output
33 W 105.5 dB
17 W 103.0 dB
9 W 100.0 dB
6 W 98.5 dB
3 W 95.5 dB
100 V Output
33 W 105.5 dB
17 W 103.0 dB
9 W 100.0 dB
6 W 98.5 dB
25 V Output
5 W 97.5 dB
2.5 W 94.5 dB
1.3 W 91.5 dB
0.63 W 88.5 dB
• 88.5 dB average sensitivity offers high-
output capabilities & reduced amplifica-
tion costs.
• UL 1480 rev. 5 & 2043, CE (EMC Direc-
tive 89/366/EEC, EN55020, EN55013 &
IEC529 approval pending. Milspec 810
approved.
Transducers
Low Frequency Driver
High Frequency Driver
Low Frequency Voice Coil
Crossover Frequency
1 x 133 mm (5.25 in) Polypropylene cone, butyl rubber surround
25 mm (1.0 in) Convex aluminum tweeter with waveguide
25 mm (1.0 in)
3 kHz
• Included accessories: Tile bridge,
Euroblock connector & paint mask.
Network Type
Low Pass
High Pass
Enclosure Material
Motor Board
Grille
12 dB per octave, 2nd order
12 dB per octave, 2nd order
Drawn aluminum backcan with ABS baffle
Cast aluminum
Iridite-plated steel with powder-coat finish
4 Pin, 5 mm Euroblock for individual or daisy chain connection
Black or white
• Optional accessories: Pre-Construction
Bracket, Junction Box and Square Grille
for architectural specifications.
• High-quality black or white paint
finish. Custom paint colors optional.
Inputs
Colors
Description
Backcan Diameter
Backcan Height
Visible Diameter
Visible Height
Weight
219.2 mm / 8.63 in
197 mm / 7.75 in
271.9 mm / 10.71 in
24.5 mm / .96 in
3.4 kG / 7.5 lbs
10.7 kG / 23.5 lbs (2 per box, includes tile bridges)
The CM500i is a 5.25” 2-way blind-mount
in-ceiling speaker that delivers effective
low-end response (55 Hz) and optimal off-
axis performance (up to 10 kHz, EASE™
documented). SoundTube’s proprietary
BroadBeam® waveguide tweeter system
delivers consistent high-performance
audio across the operating bandwidth.
The CM500i speaker design incorporates a
low-profile grille, proprietary M5™ motor-
board, 6-position tap switch with voice
coil/8 Ohm direct. Mounting hardware is
included & features a fast & secure con-
stant-tension fixed-wing mounting system.
Shipping Weight
Accessories
Included
Optional
Tile bridge, Euroblock connector & installation aid
Pre-Construction Bracket (AC-CM5-PCB),
Junction Box (AC-CM-JBOX)
Packaging
2 Per box
1
2
3
4
Frequency response is measured in half space and includes a low-frequency peak > + 3 dB.
Continuous power rating, EIA-426-B test.
UL testing specifies band-limited pink noise over the indicated frequency spectrum.
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.
© 2005 SoundTube Entertainment. All rights reserved. PN TS-CM500 REV 08.29.05
In-Ceiling Speaker
CM500i
Preliminary Technical Information for System Engineers
shall have a nominal impedance of 8
Ohms and be available for 25, 70.7 & 100
Volt modes with voice coil/8 Ohm direct.
The frequency-dividing network shall
have a crossover frequency of 3 kHz with
slopes of 12 dB per octave (2nd order) for
both low & high pass filters. Rated power
capacity shall be at least 75 Watts continu-
ous power (RMS) and conform to EIA-426-
B testing. Maximum continuous output at
1 meter shall be 107.5 dB.
variety of standard measurement tech-
niques, including Measured Length
Sequence (MLS) and Time Delay Spec-
trometry (TDS). Performance, develop-
ment 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.
Patented SoundTube
Technologies
SoundTube Entertainment is con-
stantly developing new technologies
that enhance audio product per-
formance. SoundTube Entertainment
innovations are protected by multiple
U.S. & international patents, which
explicitly cover SoundTube dome,
enclosure and dispersion technologies.
SoundTube Entertainment actively
defends its patents in order to protect
SoundTube resellers and end users.
EASE™ Data – 3-D polar plots.
SoundTubeSPEC™ – Proprietary
SoundTube speaker placement software.
The low-frequency transducer shall
have a polypropylene cone with rubber
surround. The high-frequency transducer
shall be constructed of aluminum with a
proprietary BroadBeam® waveguide.
Architectural Specifications
Technical Data and
Specification Tools
The loudspeaker shall consist of a 133
mm (5.25 in) low-frequency transducer
and a 25 mm (1.0 in) high-frequency
transducer with a crossover network
installed in the enclosure. The low-fre-
quency voice coil diameter shall be 25
mm (1.0 in).
Technical Data
Installation for the CM500i shall be by
2-screw, blind-mount, constant tension
winged assembly and shall attach to ceil-
ing thickness tolerances ranging from
6.4 mm (0.25 in) to 42.9 mm (1.69 in). The
fixed-wing assembly shall be constructed
of glass-filled ABS material. The external
wiring input connector shall be a 4-pin,
5 mm Euroblock for 8 Ohm or distributed
systems and shall accept from 10 – 22
gauge wire.
SoundTube Entertainment strives to
provide complete and effective technical
information and data to dealers, engi-
neers and designers. All data are avail-
able from SoundTube Entertainment or
at www.soundtube.com.
Performance specifications of a typi-
cal production unit shall be as follows:
Useable frequency response shall extend
from 55 Hz – 22 kHz (-10 dB, half space,
no external equalization). Measured
sensitivity (2.83 Volt input, 1 meter)
shall be at least 88.5 dB. The speaker
Data Acquisition
All performance data acquired at
SoundTube’s Technical Measurement
Center (TMC) are analyzed using a
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
In-Ceiling Speaker
CM500i
Preliminary Technical Information for System Engineers
Mechanical Drawings
The maximum backcan dimensions
shall be no more than 197 mm (7.75 in)
in height by 219.2 mm (8.63 in) in diam-
eter. The maximum visible dimensions
shall be no more than 24.5 mm (0.96 in)
in height by 271.9 mm (10.71 in) in diam-
eter. The backcan shall be constructed of
aluminum.
Side
Top
197 mm
(7.75 in)
219.2
mm
(8.63 in)
The system shall include a 16-gauge
galvanized steel support backing plate
(tile bridge) to reinforce the ceiling mate-
rial and tile support rails. The maximum
tile bridge dimensions shall be no more
than 600.1 mm (23.62 in) in length by 323.9
mm (12.75 in) in width and 11 mm (0.41
in) in thickness with a 228.6 mm (9.0 in)
cutout for speaker mounting.
271.9 mm (10.71 in)
24.5 mm
(0.96 in)
The grille shall be constructed of an
ABS bezel and iridite-plated, powder-
coated steel for lasting performance in
the elements. The affixed grille and
bezel shall be mounted to the speaker
enclosure (backcan) via magnetic strip
and include safety wire. Also included
are a paint mask for in-field painting
and an installation aid that serves as a
handhold during mounting.
Included Accessories
600.1 mm
(23.62 in)
228.6 mm
(9.00 in)
The CM500i has an optional Pre-Con-
struction Bracket (AC-CM5-PCB) that
shall be compatible with an optional
Junction Box (AC-CM-JBOX). An 18-
gauge wire whip and Euroblock connec-
tor shall be included with the junction
box. The maximum dimensions of the
Pre-Construction Bracket shall be no
more than 635 mm (25.0 in) in length by
381 mm (15.0 in) in width and 128 mm
(5.0 in) (includes affixed junction box) in
thickness with a 228.6 mm (9.0 in) cutout
for speaker mounting.
Max.
42.9 mm (1.69 in)
Min.
6.4 mm (0.25 in)
Fixed Wing Mounting System
323.5 mm (12.75 in)
Tile Bridge
The system shall be the SoundTube
CM500i for both low & high impedance
applications.
Paint Mask
Optional Accesories
SoundTube Entertainment
6430 North Business Park Loop
Park City, Utah 84098
Phone 435.647.9555
Fax
435.647.9666
Toll Free 800.647.TUBE
All SoundTube products come
with a 5-year limited warranty.
Pre-Construction Bracket (AC-CM5-PCB)
Junction Box (AC-CM-JBOX)
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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