In-Ceiling Speaker
CM800i
Technical Information for System Engineers
Key Features
• BroadBeam11® waveguide technology
delivers a consistent BroadBeam™ dis-
persion pattern for maximum coverage
area per speaker (up to 10 kHz, EASE™
documented).
• One 203 mm (8.0 in) polypropylene
woofer and one 25 mm (1.0 in) convex
aluminum tweeter with FerroFluid™
cooling mounted to a proprietary cast-
aluminum M8™ baffle and heat sink.
Tile bridge included
Specifications: CM800i
System Type
8” Coax, in-ceiling, ported (64 Watt transformer for
• 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).
25/70.7/100 Volt or voice coil/8 Ohm direct)
85 Hz - 22 kHz
60 Hz - 22 kHz
250 Watts
125 Watts
114.5 dB
93.5 dB
8 Ohm (nominal value)
Frequency Response (-3 dB)1
Low Frequnecy (-10 dB)1
Max. Program Power
Max. Continuous Power RMS2
Max. SPL dB @ 1 M RMS
Sensitivity dB @ 1W/1M3
Impedance (nominal)
Coverage Angle (-6 dB @ 2 kHz)
Coverage Angle (-6 dB @ 10 kHz)
Directivity Factor (Q)
• Separate tool-free magnetic grille &
bezel assembly for ease of install &
in-field painting.
100º
100º
• Iridite-plated steel grille with protective
powder-coated finish for lasting durability.
5.00 (Averaged 100 Hz - 10 kHz); 8.05 @ 2 kHz
6.08 dB (Averaged 100 Hz - 10 kHz); 9.06 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
64 W
32 W
16 W
8 W
Output
100 V
64 W
32 W
16 W
8 W
Output
25 V
4 W
2 W
1 W
.5 W
Output
111.5 dB
108.5 dB
105.5 dB
102.5 dB
99.5 dB
111.5 dB
108.5 dB
105.5 dB
102.5 dB
99.5 dB
96.5 dB
93.5 dB
90.5 dB
• 93.5 dB average sensitivity offers high-
output capabilities & reduced amplifi-
cation costs.
4 W
• UL 1480 & 2043, CE (EMC Directive
89/366/EEC, EN55020, EN55013), Mil-
spec 810 & IEC529 approval pending.
Transducer
Low Frequency Driver
High Frequency Driver
Low Frequency Voice Coil
Crossover Frequency
1 x 203 mm (8.0 in) Polypropylene cone, butyl rubber surround
25 mm (1.0 in) Convex aluminum tweeter with waveguide
30.4 mm (1.2 in)
3 kHz
• Included accessories: Tile bridge,
Euroblock connector & paint mask.
• Optional accessories: Pre-Construction
Bracket, Junction Box and Square Grille
for architectural specifications.
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
• High-quality black or white paint
finish. Custom paint colors optional.
Description
Inputs
Colors
The CM800i is an 8” 2-way blind-mount
in-ceiling speaker design that delivers
extended low-end response (60 Hz) and
optimal off-axis performance (up to 10
kHz, EASE™ documented). SoundTube’s
proprietary BroadBeam11® waveguide
tweeter system delivers consistent high-
performance audio across the operating
bandwidth. The CM800i speaker design
incorporates a low-profile grille, propri-
etary M8™ motor-board and 6-position
tap switch with voice coil/8 Ohm direct.
Mounting hardware is included & features
a fast & secure constant tension fixed-wing
mounting system.
Backcan Diameter
Backcan Height
Visible Diameter
Visible Height
Weight
296.7 mm / 11.68 in
201.7 mm / 7.94 in
27.5 mm / 1.08 in
375.0 mm / 14.76 in
5.7 kG / 12.5 lbs
17.7 kG / 39 lbs (2 per box, includes tile bridges)
Shipping Weight
Accessories
Included
Optional
Tile bridge, Euroblock connector & installation aid
Pre-Construction Bracket (AC-CM8-PCB), Junction Box
(AC-CM-JBOX) & architectural Square Grille (AC-CM8-SG)
2 Per box
Packaging
1
2
3
Frequency response is measured in half 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.
© 2003 SoundTube Entertainment, Inc. All rights reserved. REV 07.20.04
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In-Ceiling Speaker
CM800i
Technical Information for System Engineers
Sequence (MLS) and Time Delay Spec-
with voice coil/8 Ohm direct. The fre-
quency-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 125 Watts con-
tinuous power (RMS) and conform to
EIA-426-B testing. Maximum continuous
output at 1 meter shall be 114.5 dB.
Patented SoundTube
Technologies
trometry (TDS). Performance, devel-
opment and data acquisition tools
include: Gold Line TEF 20, CLIO,
LMS, LEAP, and proprietary modeling
software. EASE™ data are acquired
through an automated TEF
SoundTube Entertainment is constantly
developing new technologies that enhance
audio product performance. SoundTube
Entertainment innovations are protected
by multiple U.S. & international patents,
which explicitly cover SoundTube dome,
enclosure and dispersion technologies.
SoundTube Entertainment actively
20/Outline/EASE™ interface.
EASE™ Data – 3-D polar plots.
Installation for the CM800i shall be
by 2-screw blind-mount, constant tension
winged assembly and shall attach to ceiling
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.
SoundTubeSPEC™ – Proprietary
SoundTube speaker placement software.
defends its patents in order to protect
SoundTube resellers and end users.
Architectural Specifications
Technical Data and
Specification Tools
The loudspeaker shall consist of a 203
mm (8.0 in) low-frequency transducer and
a 25 mm (1.0 in) high-frequency trans-
ducer with a crossover network installed
in the ported enclosure. The low-fre-
quency voice coil diameter shall be 30.4
mm (1.2 in).
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-
The maximum backcan dimensions
shall be no more than 201.7 mm (7.94 in) in
height by 296.7 mm (11.68 in) in diameter.
The maximum visible dimensions shall be
no more than 27.5 mm (1.08 in) in height
by 375 mm (14.76 in) in diameter. The
backcan shall be constructed of aluminum.
Performance specifications of a typical
production unit shall be as follows: Use-
able frequency response shall extend from
60 Hz – 22 kHz (-10 dB, half space, no
external equalization). Measured sensi-
tivity (2.83 Volt input, 1 meter) shall be
at least 93.5 dB. The speaker shall have
a nominal impedance of 8 Ohms and be
available for 25, 70.7 & 100 Volt modes
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
The system shall include a 16-gauge
galvanized steel support backing plate
Polar Plots
250 Hz
500 Hz
1000 Hz
125 Hz
4000 Hz
8000 Hz
10000 Hz
2000 Hz
™
™
Technical data, EASE plots, SoundTubeSPEC software & product downloads available at www.soundtube.com
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In-Ceiling Speaker
CM800i
Mechanical Drawings
Sidde
Technical Information for System Engineers
(tile bridge) to reinforce the ceiling material
and tile support rails. The maximum tile
bridge dimensions shall be no more than
600.1 mm (23.62 in) in length by 428.2 mm
(16.86 in) in width and 10.4 mm (0.41 in) in
thickness with 325.1 mm (12.80 in) cutout for
speaker mounting.
Top
The grille shall be constructed of iri-
dite-plated, powder-coated steel with an
ABS baffle for lasting performance. 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.
296.7 mm
(11.68 in)
201.7 mm
(7.94 in)
375 mm (14.76 in)
27.5 mm (1.08 in)
The CM800i has an optional Pre-Con-
struction Bracket (AC-CM8-PCB) that shall
be compatible with an optional Junction
Box (AC-CM-JBOX). An 18-gauge wire
whip and Euroblock connector shall be
included with the Junction Box. The maxi-
mum dimensions of the Pre-Construction
Bracket shall be no more than 635 mm
(25.0 in) in length by 457.2mm (18.0 in)
in width and 127 mm (5.0 in) in thickness
with a 326.1 mm (12.85 in) cutout for speaker
mounting.
Included Accessories
The CM800i will also have an optional
Square Grille (AC-CM8-SG) for architec-
tural applications.
325.1 mm
(12.80 in)
600.1 mm
(23.62 in)
The system shall be the SoundTube
CM800i for both low & high impedance
applications.
Max.
42.9 mm (1.69 in)
Min.
6.4 mm (0.25 in)
Fixed Wing Mounting System
SoundTube Entertainment
6430 North Business Park Loop
Park City, Utah 84098
428.2
(16.86 in)
Phone 435.647.9555
Tile Bridge
Fax
435.647.9666
Toll Free 800.647.TUBE
All SoundTube products come
with a 5-year limited warranty.
Paint Mask
Optional Accesories (not shown)
Pre-Construction Bracket (AC-CM8-PCB)
Square Grille (AC-CM8-SG)
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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