Cm800i – Phase Technology CM5800i User Manual
Page 3

Technical data, EASE
™
plots, SoundTubeSPEC
™
software & product downloads available at www.soundtube.com
CM800i
In-Ceiling Speaker
Technical Information for System Engineers
Sequence (MLS) and Time Delay Spec-
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 
20/Outline/EASE
™
interface.
EASE™ Data
– 3-D polar plots.
SoundTubeSPEC™
– Proprietary
SoundTube speaker placement software.
Arc
Architectural Specifications
 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).
 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 
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.
 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.
 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.
 The system shall include a 16-gauge 
galvanized steel support backing plate 
Patented SoundTube 
Technologies
 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 
defends its patents in order to protect 
SoundTube resellers and end users.
Technical Data and 
Specification Tools
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-
ment or at www.soundtube.com 
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 
10000 Hz
8000 Hz
4000 Hz
2000 Hz
1000 Hz
500 Hz
250 Hz
125 Hz
Polar Plots
