SoundTube CM-EZ-II-BK Data Sheet

CM-EZ-II

Specifications: CM-EZ-II

System Type

Impedance (nominal)
Sensitivity dB @ 2.83 V/1 m
Sensitivity dB @ 1W/1m
Frequency Response (- 3 dB)
Frequency Response (-10 dB)
Max. Program Power
Max. Continuous Power RMS
Max. Power SPL @ 1 m
Coverage Angle (-6 dB @ 2 kHz)
Coverage Angle (-6 dB @ 10 kHz)
Coverage Angle (averaged 2-10 kHz)
Directivity Factor (Q)
Directivity Index (DI) dB
Tap Selector
Transducer - Low-Frequency Driver
Transducer - High-Frequency Driver
Low-Frequency Voice Coil
Crossover Frequency
Network Type: Low-Pass
Network Type: High-Pass
Enclosure Material
Grille
Inputs
Colors
Backcan Diameter
Backcan Height
Visible Diameter
Visible Height
Mounting Hole Diameter
Min / Max Ceiling Thickness
Weight
Shipping Weight
Packaging
Included Accessories
Optional Accessories

UL Approval
CE Approval

1

Impedance listed per IEC 60268-5 with a minimum
less than 80% the nominal impedance

2

1 W 1 m sensitivity determined using nominal
impedance

3

Frequency response measured in half or full space
as dictated by speaker mounting configuration

4

Max program power is 3 dB above max
continuous power

5

Continuous power rating, EIA-426-B test

6

Max output based on max continuous power

1

2

3

3

4

5

6

In-Ceiling Speaker

Technical Information for System Engineers

Tile Bridge Included

8-inch coax, open-ceiling, sealed (20-watt transformer for
25/70.7/100-volt or voice-coil-direct)
8 ohm

87.5 dB

87.5 dB
73 Hz - 19 kHz
54 Hz - 22 kHz
80 W
40 W

103.5 dB
125°
55°
92°

5.1 (averaged 100 Hz - 10 kHz); 5.5 (2 kHz)

5.9 dB (averaged 100 Hz - 10 kHz; 7.4 dB (2 kHz)
Six-position rotary switch with voice coil direct
203 mm (8.00 in.) polypropylene cone, butyl rubber surround
25 mm (1.00 in.) polypropylene dome tweeter

25.4 mm (1.00 in.)

5.6 kHz
6 dB per octave, 1st order
6 dB per octave, 1st order
Drawn steel backcan with ABS baffle
Steel with powder-coat finish
18-gauge hard-wired leads
Black or white

231.8 mm (9.13 in.)

190.5 mm (7.50 in.)

273.1 mm (10.75 in.)

5.1 mm (0.20 in.)

247.7 mm (9.75 in.)

12.7 mm (0.50 in.) / 19.1 mm (0.75 in.)

3.2 kg (7.0 lbs.)

3.6 kg (7.9 lbs.)
One per box
Tile bridge, UL-listed flex conduit clamp, paint shield
Pre-construction bracket (AC-CM-EZ-PCB), junction box (AC-CM-EZ­JBOX)
UL 1480- and 2043-approved
Approved

Transformer Taps

70.7 V Output 100 V Output 25 V Output

20 W 100.5 dB
10 W 97.5 dB
5 W 94.5 dB

2.5 W 91.5 dB

1.25 W 88.5 dB

20 W 100.5 dB
10 W 97.5 dB
5 W 94.5 dB

2.5 W 91.5 dB

2.5 W 91.5 dB

1.3 W 88.5 dB

0.63 W 85.5 dB

Key Features

• SnapCam™ four-point, spring-loaded
mounting system for rapid installation.

• One 203 mm (8 in.) polypropylene cone
with butyl rubber surround and one 25
mm (1 in.) polypropylene balanced dome
tweeter with FerroFluid.™

• Integrated backcan with 25/70.7/100-volt
and voice-coil-direct tap settings for ease
of ordering, stocking and installation.

• Quick-release mechanism for easy servic­ing.

• UL 1480 and 2043 approved.

• Adaptable to ceiling thicknesses ranging
from 12.70 mm (0.5 in.) to 19.05 mm (0.75
in.).

• Included accessories: tile bridge, UL-listed
flex conduit clamp, paint shield.

• Optional accessories: pre-construction
bracket, junction box.

• High-quality black or white paint finish.
Custom colors optional.

Description

The CM-EZ-II is a two-way, blind-mount,
in-ceiling speaker. The CM-EZ-II speaker
design incorporates an 8-inch polypro­pylene driver with rubber surround and
a 7.3 liter steel backcan for extended fre­quency response (54 Hz – 22 kHz, (- 10 dB).
SoundTube’s integrated CM-EZ-II design
includes unique and patented blind-mount
SnapCam™ installation technology and a
21-gauge steel tile bridge ensuring rapid and
secure installation in any drop-tile ceiling.
For easy ordering, stocking and installation,
the CM-EZ-II comes with a six-position tap
switch for 25-, 70.7- and 100-volt modes with
voice-coil-direct position.

Applications

Engineered for general background to fore­ground music and paging applications, the
CM-EZ-II is ideal for medical facilities, retail
stores, restaurants, airports, churches, confer­ence centers and boardrooms.

© 2009 SoundTube Entertainment. All rights reserved. CMEZ REV 02.12.10

CM-EZ-II

In-Ceiling Speaker

Technical Information for System Engineers

Patented SoundTube
Technologies

SoundTube Entertainment and the
MSE Audio Group constantly develop
new technologies which enhance audio
product performance. SoundTube Enter­tainment innovations are protected by
multiple U.S. and international patents,
which explicitly cover SoundTube dome,
enclosure and dispersion technologies.
The MSE Audio Group 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 technical
information and data to dealers, engi­neers and designers. All data are avail­able from SoundTube Entertainment or at
www.soundtube.com.

Technical data and downloads include:

EASE™ data – 3-D polar plots.

EASE™ Address – 2-D modeling for dis­tributed systems

Autodesk® Revit® software

Tech Sheets – Technical information and
architectural specs for system engineers

SoundTubeSPEC™ – Proprietary speaker
placement software

Acquisition and Verification

All data for SoundTube speakers are
independently collected from and veri­fied by NWAA Labs (www.nwaalabs.
com) using their proprietary MACH
testing system. All data are collected and
analyzed according to ASTM, ISO and
AES standards using EASERA, TEF and
MLSSA. Full balloon data including both
phase and magnitude is compiled into
a variety of formats including EASE 4.x,
GLL and CLF.

Architectural Specifications

The loudspeaker shall consist of a 203
mm (8.0 in.) low-frequency transducer
and one 25 mm (1.0 in.) high-frequency
transducer with a frequency dividing
network installed in a sealed enclosure.
The low-frequency voice coil diameter
shall be 25 mm (1.0 in.).

Performance specifications of a typical
production unit shall be as follows: Use­able frequency range shall extend from
54 Hz - 22 kHz (-10 dB). The speaker shall
have a nominal impedance of 8 ohms.
The loudspeaker shall be available with
selectable 25/70.7/100-volt and voice-coil­direct tap switch. The frequency-dividing
network shall have a crossover frequency
of 5.6 kHz. Rated power capacity of the
components and network shall be at least
40 watts continuous (RMS).

The backcan dimensions shall be no
more than 7.50 in. (190.5 mm) in height
by 9.13 in. (231.8mm) in diameter. Visible
dimensions shall be no more than .20 in.
(5.1 mm) in height by 10.75 in. (273.1 mm)
in diameter.

The backcan shall be constructed
of plated steel with an ABS plastic
bezel. The grille shall be constructed of
powder-coated steel. The low-frequency
transducer shall have a polypropylene
cone material with butyl rubber sur­round. The high-frequency transducer
shall be constructed of polypropylene
material using a balanced-dome configu­ration.

Shipped complete with UL-listed flex
conduit clamp, tile bridge, grille, cut­out template and paint shield, the inte­grated CM-EZ-II open-ceiling speaker
is engineered for high performance and
rapid installation in plenum spaces.
The CM-EZ-II incorporates a secondary
attachment bolt for added security and
code satisfaction where required.

The CM-EZ-II installation shall be by
four-point blind-mount system using

spring-loaded cams and a tile bridge.
The CM-EZ-II’s spring-loaded cams are
adaptable to stable surfaces including
drop tile and sheetrock and can accomo­date material thicknesses ranging from

12.70 mm (0.50 in.) to 19.05 mm (0.75
in.). For surfaces thicker than 15.87 mm
(0.625 in.), proper installation requires
removing the rubber feet on the cam
mechanisms. Refer to the CM-EZ-II
installation instructions at www.sound­tube.com.

Designed for both 25/70.7/100-volt
and voice-coil-direct applications, the
CM-EZ-II is factory preset to the 70.7
at 20 watts operating mode with a tap
switch located on the backcan. The sys­tem shall be the SoundTube CM-EZ-II
for both low- and high-impedance appli­cations.

SoundTube Entertainment

6430 Business Park Loop Road
Park City, Utah 84098
Phone [phone]
Fax [phone]
Toll Free 800.647.TUBE
www.soundtube.com

All SoundTube products come
with a 5-year limited warranty.