Crown G160MA, G135MA Users Manual

Operation Manual

Commercial Audio Series

135MA

160MA

Obtaining Other Language Versions: To obtain information in another language about the use of this product, please contact your
local Crown Distributor. If you need assistance locating your local distributor, please contact Crown at 574-294-8000.

This manual does not include all of the details of design, production, or variations of the equipment. Nor does it cover every possible
situation which may arise during installation, operation or maintenance.

The information provided in this manual was deemed accurate as of the publication date. However, updates to this information may have
occurred. To obtain the latest version of this manual, please visit the Crown website at www.crownaudio.com.

Trademark Notice: Crown, Crown Audio, and Amcron are registered trademarks of Crown International. Other trademarks are the
property of their respective owners.

Some models may be exported under the name Amcron

©2008 by Crown Audio®, Inc., 1718 W. Mishawaka Rd., Elkhart, Indiana 46517-9439 U.S.A. Telephone: [phone]

®

140497-2

10/10

Commercial Audio Series Mixer-Amplifiers

Commercial Audio Series Mixer-Amplifiers

Important Safety Instructions

Importantes Instructions de Sécurité

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a dry cloth.

7. Do not block any ventilation openings. Install in accordance
with the manufacturer’s instructions.

8. Do not install near any heat sources such as radiators, heat
reg isters, stoves, or other apparatus (including amplifiers)
that produce heat.

9. Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two blades with
one wider than the other. A grounding-type plug has two
blades and a third grounding prong. The wide blade or
the third prong is provided for your safety. If the provided
plug does not fit into your outlet, consult an electrician for
replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched,
par ticularly at plugs, convenience receptacles, and the point
where they exit from the apparatus.

11. Only use attachments/accessories specified by the manufac­turer.

12. Use only with a cart, stand, tripod, bracket, or table specified
by the manufacturer, or sold with the apparatus. When a
cart is used, use caution when moving the cart/apparatus
combination to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when
unused for long periods of time.

14. Refer all servicing to qualified service personnel. Servicing
is required when the apparatus has been damaged in any
way, such as power-supply cord or plug is damaged, liquid
has been spilled or objects have fallen into the apparatus,
the apparatus has been exposed to rain or moisture, does
not operate nor mally, or has been dropped.

15. Use the mains plug to disconnect the apparatus from the
mains.

16. WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC

SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR
MOISTURE.

17. DO NOT EXPOSE THIS EQUIPMENT TO DRIPPING OR

SPASHING AND ENSURE THAT NO OBJECTS FILLED
WITH LIQUIDS, SUCH AS VASES, ARE PLACED ON THE
EQUIPMENT.

18. THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL

REMAIN READILY OPERABLE.

Wichtige Sicherheitsinstruktionen

Instrucciones de Seguridad Importantes

TO PREVENT ELECTRIC SHOCK DO NOT REMOVE TOP OR
BOTTOM COVERS. NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

À PRÉVENIR LE CHOC ÉLECTRIQUE N’ENLEVEZ PAS LES
COUVERCLES. IL N’Y A PAS DES PARTIES SERVICEABLE
À L’INTÉRIEUR. TOUS REPARATIONS DOIT ETRE FAIRE PAR
PERSONNEL QUALIFIÉ SEULMENT.

PARA PREVENIR UN CHOQUE ELÉCTRICO, NO RETIRE LAS
CUBIERTAS SUPERIOR O INFERIOR. NO EXISTEN PARTES QUE
PUEDAN SER REPARADAS POR EL USUARIO AL INTE RIOR.
REMITA EL SERVICICO AL PERSONAL TÉCHNICAL CALIFI­CADO.

TO COMPLETELY DISCONNECT THIS EQUIPMENT FROM THE
AC MAINS, DISCONNECT THE POWER SUPPLY CORD PLUG
FROM THE AC RECEPTACLE. THE MAINS PLUG OF THE POWER
SUPPLY CORD SHALL REMAIN READILY OPERABLE.

POUR DÉMONTER COMPLÈTEMENT L’ÉQUIPEMENT DE
L’ALIMENTATION GÉNÉRALE, DÉMONTER LE CÂBLE D’ALI­MENTATION DE SON RÉCEPTACLE. LA PRISE D’ALIMEN TATION
RESTERA AISÉMENT FONCTIONNELLE.

PARA DESCONECTAR COMPLETAMENTE EL EQUIPO DEL
SUMINSTRO ELECTRICO, DESCONECTE EL CABLE DE ALI­MENTACION DE LA TOMA DE CA. LAS PATAS DEL CONEC TOR
DEL CABLE DE ALIMENTACIÓN DEBERAN MANTENERSE EN
BUEN ESTADO.

WATCH FOR THESE SYMBOLS:

The lightning bolt triangle is used to alert the user to the risk of
electric shock.

The exclamation point triangle is used to alert the user to
important operating or maintenance instructions.

REGARDEZ CES SYMBOLES:

La triangle avec le sigle ‘’foudre’’ est employée pour alerter
l’utilisateur au risque de décharge électrique. Le triangle avec
un point d’exclamation est employée pour alerter l’utilisateur
d’instruction importantes pour lors opérations de mainte nance.

ATENCION CON ESTOS SÍMBOLOS:

El triángulo con el símbolo de rayo eléctrico es usado para
alertar al usuario de el riesgo de un choque eléctrico.

El triángulo con el signo de admiración es usado para alertar
al usuario de instrucciones importantes de operación o man­tenimiento.

IMPORTANT

Commercial Audio Series mixer-amplifiers require Class 2 output wiring.
Les amplificateurs de série de Commercial Audio exigent des câbles de
sortie de classe 2.
Commercial Audio-Reihe-Verstärker verlangen Klasse die 2
Produktionsverdrah tung.
Los amplificadores de la Serie XTi requieren de un cableado de sal ida
Clase 2.

MAGNETIC FIELD

CAUTION! Do not locate sensitive high-gain equipment such as
preamplifiers or tape decks directly above or below the unit. Because
this amplifier has a high power density, it has a strong magnetic field
which can induce hum into unshielded devices that are located nearby.
The field is strongest just above and below the unit.

If an equipment rack is used, we recommend locating the amplifier(s)
in the bottom of the rack and the preamplifier or other sensitive equip­ment at the top.

FCC COMPLIANCE NOTICE

This device complies with part 15 of the FCC rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired
operation.

CAUTION: Changes or modifications not expressly approved by the party responsible for
complicance could void the user’s authority to operate the equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This equip­ment generates, uses, and can radiate radio frequency energy and, if not installed and used
in accordance with the instruction manual, may cause harmful interference to radio com­munications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television recep­tion, which can be determined by turning the equipment off and on, the user is encouraged
to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

Crown International, Inc.

Issued By: Crown International, Inc.

1718 W. Mishawaka Rd.
Elkhart, IN 46517 U.S.A.

European Representative’s Name and Address:

David J. Budge
10 Harvest Close
Yateley
GU46 6YS
United Kingdom

Equipment Type: Commercial Audio Mixer-Amplifiers
Family Name: Commercial Audio Family
Model Names: 135MA, 160MA

EMC Standards:

EN 55103-1:1995 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 1: Emissions
EN 55103-1:1995 Magnetic Field Emissions-Annex A @ 10 cm and 1 M
EN 61000-3-2:1995+A14:2000 Limits for Harmonic Current Emissions (equipment input current ≤16A per phase)
EN 61000-3-3:1995 Limitation of Voltage Fluctuations and Flicker in Low-Voltage Supply Systems Rated Current ≤16A
EN 55022:1992 + A1: 1995 & A2:1997 Limits and Methods of Measurement of Radio Disturbance Characteristics of ITE: Radiated, Class B Limits; Conducted, Class B
EN 55103-2:1996 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 2: Immunity
EN 61000-4-2:1995 Electrostatic Discharge Immunity (Environment E2-Criteria B, 4k V Contact, 8k V Air Discharge)
EN 61000-4-3:1996 Radiated, Radio-Frequency, Electromagnetic Immunity (Environment E2, Criteria A)
EN 61000-4-4:1995 Electrical Fast Transient/Burst Immunity (Criteria B)
EN 61000-4-5:1995 Surge Immunity (Criteria B)
EN 61000-4-6:1996 Immunity to Conducted Disturbances Induced by Radio-Frequency Fields (Criteria A)
EN 61000-4-11:1994 Voltage Dips, Short Interruptions and Voltage Variation

Safety Standard:

EN 60065: 1998 Safety Requirements - Audio Video and Similar Electronic Apparatus

I certify that the product identified above conforms to the requirements of the EMC Council Directive 89/336/EEC as amended by 92/31/EEC, and the Low Voltage Directive 73/23/EES as amended by 93/68/EEC.

Signed

Larry Coburn

Title: Senior Vice President of Manufacturing

DECLARATION OF CONFORMITY

TFOR COMPLIANCE QUESTIONS ONLY:

Sue Whitfield
574-294-8289
swhitfi[e-mail]

Date of Issue: January 1, 2007

Operation Manualpage 2

Operation Manual page 3

Table of Contents

Important Safety Instructions............................................................... 2

Declaration of Conformity .................................................................. 3

1 Welcome ......................................................... 5

1.1 Features ................................................................................. 5

1.2 Front Panel Controls and Indicators ....................................... 6

1.3 Back Panel Controls, Connectors and Indicators.................... 7

2 Setup.............................................................. 8

2.1 Installation.............................................................................. 8

2.2 How to Attach the Unit to a Rack ............................................ 8

2.3 Choose Input Wire and Connectors........................................ 9

2.4 Choose Output Wire and Connectors ................................... 10

2.5 Wire Your System................................................................. 11

2.6 Phantom Power .................................................................... 11

3 Operation....................................................... 12

3.1 Powering Up ........................................................................ 12

3.2 Priority Muting ..................................................................... 12

3.3 Voice-Activated (VOX) Muting ............................................. 12

3.4 Music-On-Hold .................................................................... 12

3.5 Security Knobs ..................................................................... 12

4 Troubleshooting... ............................................. 13

5 Specifications.................................................. 14

6 Service.......................................................... 15

7 Warranty ....................................................... 16

Product Registration...........................................................................19

Factory Service Information Form ..................................................... 21

Commercial Audio Series Mixer-Amplifiers

Commercial Audio Series Mixer-Amplifiers

135MA

Minimum guaranteed power
into 8 ohms or 70V/100V output

*1 kHz Power: refers to maximum power in watts at
1 kHz with 0.5% THD.

160MA

Minimum guaranteed power
into 8 ohms or 70V/100V output

*1 kHz Power: refers to maximum power in watts at
1 kHz with 0.5% THD.

*

1 kHz
Power

35W

*

1 kHz
Power

60W

1 Welcome

®

The Cr

high-value mixer-amplifiers for com­mercial audio. They provide 8-ohm
and constant-voltage outputs (70V and
100V). Typical uses are paging, back­ground music, and music-on-hold.

The 135MA provides 3 inputs (each with
a volume control) and a 35W amplifier
output. The 160MA provides 4 inputs
(each with a volume control) and a 60W
amplifier output.

Other features include priority muting,
voice-activated muting, phantom power,
and Bass and Treble controls.

own

135MA and 160MA are

1.1 Features

• 3inputs(eachwithavolumecontrol),

and one 35W amplifier output channel
in 135MA

• 4inputs(eachwithavolumecontrol),

and one 60W amplifier output channel
in 160MA

• Idealfor paging, background music,

and music-on-hold

• Balanced Phoenix-type mic/line

input, telephone output, dual RCA
stereo music inputs

• 

Priority mutingby VOX or external

switch

• Bass and Treblecontrols onmaster

output

• Three-Year,No-Fault,FullyTransfer­able Warranty completely protects
your investment and guarantees its
specifications

Operation Manualpage 4

Operation Manual page 5

Commercial Audio Series Mixer-Amplifiers

A

B

C

D

E

A

B

C

D

Commercial Audio Series Mixer-Amplifiers

2 Setup

1.2 Front Panel Controls and Indica­tors

A. Input Signal Presence/Clip Indica­tors: Green LED, one above each channel's

volume control, illuminates when input
signal exceeds –40 dBu, or flashes brightly
at threshold of audible distortion.

B. Master Output Volume Control: Detented
potentiometer with knob.

C. Output Signal Presence Indicator: Green
LED above master output volume control
illuminates when any input signal exceeds
–40 dBu.

D. Output Signal Clip Indicator: Red LED
above master output volume control flashes
brightly at threshold of audible distortion.

E. Power Indicator: Blue LED indicates
power on.

F. Input Volume Controls: One per input,

detentedpotentiometerswithknobs.Four

controls in 160MA; three controls in 135MA.
G. Tone Controls: Bass and Treble non-

detented recessed potentiometers under
master output volume control. Bass ±10 dB
at 100 Hz, Treble ±10 dB at 10 kHz.

H. Power Switch: Pushbuttonon-offswitch.

2 Setup

1.3 Back Panel Controls, Connectors
and Indicators

A. AC Power Inlet:DetachableIECaccepts

US or Euro style power cords.
B. Amplifier Output Connector: 4-position

terminal barrier block with COM (Common),
8 ohms, 70V and 100V terminals. Accepts
up to 10 AWG terminal forks. Clear non­touch cover included.

C. Amp Configuration DIP Switch:DIP

switch selection for multiple functions.

1.On:SetsCH1toMicInput.Off:SetsCH1
toLineInput.

2.On:SetsCH1toNormalmode(noprior-

ity).

3. On: CH1 priority contact closure mutes
other channels.

4.On:CH1VOXmutesotherchannelsby
sensingsignalthroughInput1.

5. On: Routes CH1 to MOH output.

6. On: Routes CH2 to MOH output.

7. On: Routes CH3 to MOH output.

8. On: 15V phantom power.

D: Input Connectors 2-4 (160MA) or 2-3
(135MA)

Unbalanced line-level RCA-type connectors,
summed to mono.

E. Preamp Line Out Connector: 3-pin bal­ancedPhoenix-typeforconnectiontoexter­nal amplifiers. Level independent of master
volume control.

F. MOH Level Control: Trim pot adjusts level
for Music-On-Hold output from Telephone
(MOH) Output Connector.

G. Telephone (MOH) Output Connector:

4-terminalPhoenixconnector(2terminals

for 1W output to 8-ohm speaker, 2 terminals

for600-ohmoutputtoPBXmusic-on-hold

port).
H. VOX Threshold: Trim pot controls how

loud the voice on CH1 must be before
muting other channels. Can be set for no
muting.

I. Input Connector 1:5-terminalPhoenix
connector. 3 terminals for balanced signal, 2
terminals for priority contact closure, which

mutesotherchannelswhenDIPswitch3

is on.

F

Figure 1.1 Front Panel Controls and Indicators

G

H

E

Figure 1.2 Back Panel Controls, Connectors and Indicators

Operation Manualpage 6

Operation Manual page 7

F

G

H

I