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 Hz4000 Hz
2000 Hz
1000 Hz
500 Hz250 Hz
125 Hz
Polar Plots