Owner's Manual

© 2010 SoundTube Entertainment. All rights reserved. PN-TS-CMEZ REV 05.20.11
Key Features
•Engineeredforapplicationswithlim-
itedplenumspaceincorporatingaSound-
Tube-specificshallowbackcanwithan
installeddepthofonly3.5inches.
•One4inch(102mm)treatedfiber
wooferwithclothsurroundandone0.75
inch(19mm)silkdometweeter.
•Easy-accesssix-positiontapswitchfor
25/70.7/100-voltand16ohmtransformer
bypasspositionallowsforeasyordering,
stockingandinstallation.
•Reducedamplificationcostswithmaxi-
mumefficiencyincluding87.5dBsensitiv-
ityand16ohmimpedance.
•Superiorvoiceintelligibilitywithan
averagecoverageangleof100°(2–10kHz,
independentlyverified).
•Cost-effective16ohmsettingsallows
fortheuseofmultiplesoftwo,four,orsix
speakersinasystemusingastandard
amplifierwithoutatransformer.
•Incorporatesapaintedsteelgrillefor
lastingdurability.
•Clampingallowancefrom0.00in.(0.0
mm)to1.50in.(38.1mm).
•UL1480(UEAY)and2043,CE(EMC
Directive89/366/EEC,EN55020,EN55013)
approved.
•High-qualityblackorwhitepaintedfin-
ish.Customcolorsavailable.
•Includedaccessories:Tilebridge,UL-
listed0.5-inchflexconduitclamp,paint
shieldandtwowirenuts.
•Optionalaccessories:Color-coded
(orange)pre-constructionbracket
(AC-CM4-PCB),junctionbox(AC-CM-EZ-
JBOX).
Description
TheCM42-EZs-IIisa4-inch,coaxial,
two-way,blind-mount,in-ceilingspeaker
whichdeliverstruehighefficiencyand
performanceacrosstheoperatingband-
width.Byincorporatinga4-inchtreated-
fiberdriverwithclothsurroundina
sealeddrawnsteelbackcan,thisspeaker
deliversmaximumfrequencyresponse
(125Hz–22kHz,-10dB)inacompact
design.
 Mountinghardwareisincludedand
featuresaconstant-tensionwinged
mountingsystemwitha21-gauge“full-
metal”steeltilebridgeensuringrapid
andsecureinstallationinanysheet-
rockordrop-tileapplication.Foreasy
ordering,stockingandinstallation,this
CM42-EZs-II
In-Ceiling Speaker
Preliminary Technical Information
Tile bridge included
Preliminary Specifications:
CM42-EZs-II
System Type
Impedance (nominal)
Sensitivity dB @ 2.83 V/1 m
Sensitivity dB @ 1 W/1m
1
Frequency Response (- 3 dB)
2
Frequency Response (-10 dB)
2
Max. Program Power
3
Max. Continuous Power RMS
4
Max. Power SPL @ 1 m
5
Coverage Angle (-6 dB @ 2 kHz)
Coverage Angle (-6 dB @ 10 kHz)
Coverage Angle (Avg. 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 Alignment
Enclosure Material
Grille
Inputs
Colors
Backcan Diameter
Backcan Height
Visible Diameter
Visible Height
Mounting Hole Diameter
Min. / Max. Ceiling Thickness
Weight
Shipping Weight
Included Accessories
Optional Accessories
Packaging
Regulatory - UL
Regulatory - CE
RoHS
4-inch, coaxial, in-ceiling, sealed (20-watt transformer for
25/70.7/100-volt or transformer bypass)
16 ohm
84.5 dB
87.5 dB
160 Hz - 20 kHz
125 Hz - 22 kHz
40 W
20 W
100.5 dB
170º
95º
100º
4.3 (averaged 100 Hz - 10 kHz); 4.2 (2 kHZ)
5.7 dB (averaged 100 Hz - 10 kHz); 6.2 dB (2 kHz)
Six-position rotary switch with transformer bypass position
102 mm (4 in.) Treated fiber cone, cloth surround
19 mm (0.75 in.) Silk dome tweeter
12.70 mm (0.50 in.)
5.0 kHz
12dB per octave, 2nd order
6 dB per octave, 1st order
Sealed
Drawn steel backcan with ABS baffle
Painted Steel
4 position ceramic terminal strip
Black or white
146.8 mm (5.78 in.)
95.3 mm (3.75 in.)
190.5 mm (7.50 in.)
8.4 mm (0.33 in.)
165.1 mm (6.50 in.)
0.0 mm (0.0 in.) – 24.6 mm (0.97 in.)
1.8 kg (4.0 lb.)
2.3 kg (5.0 lb.)
Tile bridge, UL-listed flex conduit clamp, paint shield, hole template,
wire nuts
Pre-construction bracket (AC-CM4-PCB); junction box (AC-CM-EZ-
JBOX)
One per box
1480 (UEAY) and 2043 approved
Approved
Approved
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 W 88.5 dB
0.63 W 85.5 dB
0.31 W 82.5 dB
1 W 1 m sensitivity determined using nominal
impedance
Frequency response measured in half or full space
as dictated by speaker mounting configuration
Max program power is 3 dB above max
continuous power
Continuous power rating, EIA-426-B test
Max output based on max continuous power
Max useable SPL based on testing
by NWAA Labs
1
2
3
4
5
6
Transformer Taps