EAW CAZ2500, CAZ800, CAZ1400 User Manual
CAZ2500
CAZ1400
CAZ800
Power Amplifi ers
INSTRUCTION MAN U AL
30
-
MANUFACTURED IN CHINA
2004 LOUD TECHNOLOGIES
"EAW" IS A REGISTERED
OF LOUD TECHNOLOGIES INC.
SIGOLSIGOL
30
OO
INC.
TRADEMARK
ON
POWER
OFF
PUSH
B (+)
B (--)
LINE
(BALANCED)
GND
PUSH
A (--)
A (+)
LINE
(BALANCED)
INPUT
B
OFF
SUBSONIC
FILTER AT 30Hz
INPUT
OFF
CLIP LIMIT
INPUT
CONNECTION
ON
AMP MODE
MONO
STEREO
A
BRIDGE
ON
CAZ2500-AMPLIFIER
CHANNEL B BRIDGED CHANNEL A
B (+) B (-)
(+) (-) A (+) A (-)
-
CAUTION
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPARATUS TO RAIN OR
MOISTURE. SEE INSTRUCTIONS BEFORE USING.
SERIAL / DATE CODE
BREAKER
dB dB
OO
AB
1. SAFETY INSTRUCTIONS
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 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 registers, stoves, or other apparatus (including
amplifi ers) 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 are provided for your safety. If the provided
19. Exposure to extremely high noise levels may cause
permanent hearing loss. Individuals vary considerably in
susceptibility to noise-induced hearing loss, but nearly
everyone will lose some hearing if exposed to suffi ciently
intense noise for a period of time. The U.S. Government’s
Occupational Safety and Health Administration (OSHA) has
specifi ed the permissible noise level exposures shown in
the following chart.
According to OSHA, any exposure in excess of these
permissible limits could result in some hearing loss.
To ensure against potentially dangerous exposure to
high sound pressure levels, it is recommended that all
persons exposed to equipment capable of producing high
sound pressure levels use hearing protectors while the
equipment is in operation. Ear plugs or protectors in the
ear canals or over the ears must be worn when operating
the equipment in order to prevent permanent hearing loss
if exposure is in excess of the limits set forth here:
plug does not fi t into your outlet, consult an electrician for
replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched
particularly at plugs, convenience receptacles, and the
point where they exit from the apparatus.
11. Only use attachments/accessories specifi ed by the
manufacturer.
12. Use only with a cart, stand, tripod,
bracket, or table specifi ed 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 qualifi ed 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 normally, or has been dropped.
15. WARNING: To reduce the risk of fi re or electric shock, do
not expose this apparatus to rain or moisture.
16. WARNING: The output terminals are HAZARDOUS LIVE
and any external wiring connected to these terminals
requires installation by an INSTRUCTED PERSON or the
use of ready-made leads or cords.
17. WARNING: This apparatus shall be connected to a MAINS
socket outlet with a protective earthing connection.
18. WARNING: Treat all live speaker cords with care, as you
would an AC power cord.
Part No. 0010985 Rev. A 07/2004
© 2004 LOUD Technologies Inc. All Rights Reserved. Printed in China.
Duration Per Day Sound Level dBA, Typical
In Hours Slow Response Example
8 90 Duo in small club
6 92
4 95 Subway Train
3 97
2 100 Very loud classical music
1.5 102
1 105 Tami screaming at Adrian about deadlines
0.5 110
0.25 or less 115 Loudest parts at a rock concert
CAUTION AVIS
RISK OF ELECTRIC SHOCK
RISQUE DE CHOC ELECTRIQUE
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK
NO USER-SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED PERSONNEL
ATTENTION: POUR EVITER LES RISQUES DE CHOC
ELECTRIQUE, NE PAS ENLEVER LE COUVERCLE. AUCUN
ENTRETIEN DE PIECES INTERIEURES PAR L'USAGER. CONFIER
L'ENTRETIEN AU PERSONNEL QUALIFIE.
AVIS: POUR EVITER LES RISQUES D'INCENDIE OU
D'ELECTROCUTION, N'EXPOSEZ PAS CET ARTICLE
The lightning flash with arrowhead symbol within an equilateral
triangle is intended to alert the user to the presence of uninsulated
"dangerous voltage" within the product's enclosure, that may be
of sufficient magnitude to constitute a risk of electric shock to persons.
Le symbole éclair avec point de flèche à l'intérieur d'un triangle
équilatéral est utilisé pour alerter l'utilisateur de la présence à
l'intérieur du coffret de "voltage dangereux" non isolé d'ampleur
suffisante pour constituer un risque d'éléctrocution.
The exclamation point within an equilateral triangle is intended to
alert the user of the presence of important operating and maintenance
(servicing) instructions in the literature accompanying the appliance.
Le point d'exclamation à l'intérieur d'un triangle équilatéral est
employé pour alerter les utilisateurs de la présence d'instructions
importantes pour le fonctionnement et l'entretien (service) dans le
livret d'instruction accompagnant l'appareil.
DO NOT OPEN
NE PAS OUVRIR
DO NOT REMOVE COVER (OR BACK)
A LA PLUIE OU A L'HUMIDITE
2 – CAZ Series
2. INTRODUCTION
Congratulations on the purchase of your new EAW
Commercial power amplifi er. You now own one of the
fi nest professional audio products available - the result of
exceptional engineering and meticulous craftsmanship. Please
read these instructions to get the maximum performance from
your new power amplifi er.
Each EAW Commercial power amplifi er is intended for
professional use. The construction, components, and hardware
have been designed to provide robust, reliable performance
for its intended application. Please ensure that you fully
understand its proper installation and operation before use.
The CAZ series amplifi ers are designed for continuous duty
in speech, music, paging and sound reinforcement applications
in churches, schools, offi ces, arenas, hotel meeting rooms,
convention centers, recreation facilities and other venues
demanding high performance, fl exible features, and rugged
dependability.
A rear panel low-cut switch allows you to remove low
frequencies (below 30 Hz), and a clip-eliminator allows extra
protection for your speakers by preventing the amplifi er from
being overloaded.
The amplifi er can operate in stereo, dual-mono, or bridged
mono.
The outputs are screw terminals that accept bare wire or
spade terminals.
There are screw terminal inputs, and combination inputs,
capable of accepting balanced XLR, 1/4" TRS, or unbalanced
1/4" TS connections from line-level sources. Two front panel
level controls allow adjustment of the input signals.
The front panel has a rocker power switch with a power
LED, and each channel has a signal-present LED and an
overload LED.
The amplifi er output stage is fully protected against
permanent damage caused by overloading, shorts, and extreme
temperatures.
The front panel incorporates holes for rack mounting, and
it will take up two rack spaces. There are two handles fi tted on
the front panel for easy transporting.
• Screw terminal output connectors
• Detented rotary gain controls
• Signal present and OL (overload) LEDs
• Variable speed fans and large fi nned heatsink for
superior cooling
• Robust chassis, proven design
• Discreet component power amplifi ers
• Double-sided, quality circuit boards
APPLICATIONS
• Foreground/Background Music Systems
• Sound Reinforcement Systems
• Paging Systems
• Continuous-Duty Applications
UNPACKING
You should visually inspect the outside of the shipping
carton and note any damage on the shipping bill. After
unpacking, if you fi nd concealed damage, save the packing
materials for the carrier’s inspection, notify the carrier
immediately, and fi le a shipping damage claim. Although
EAW Commercial will help in any way possible, it is always
the responsibility of the receiving party to fi le any shipping
damage claim. The carrier will help prepare and fi le this
claim.
Keep your receipt in a safe place. This is required as proof
if the amplifi er ever needs warranty service.
TABLE OF CONTENTS
1. SAFETY INSTRUCTIONS ............................................2
2. INTRODUCTION...........................................................3
3. FRONT PANEL FEATURES ..........................................4
4. REAR PANEL FEATURES.............................................5
KEY FEATURES
• CAZ800: 800 watts continuous @ 4 ohms bridged
CAZ1400: 1400 watts continuous @ 4 ohms bridged
CAZ2500: 2500 watts continuous @ 4 ohms bridged
• Ultra-low noise/low-distortion design
• Switchable low-cut fi lter @ 30 Hz on both channels
• Switchable limiter on both channels
• Combination 1/4" TRS and XLR line input jacks
• Screw terminal input connectors (balanced)
5. OPERATION..................................................................7
6. CONNECTIONS............................................................9
7. HOOKUP DIAGRAMS..................................................10
8. SPECIFICATIONS.........................................................12
9. BLOCK DIAGRAM........................................................13
10. TROUBLESHOOTING...................................................14
11. SERVICE INFORMATION............................................15
12. EAW COMMERCIAL WARRANTY.............................15
CAZ Series – 3
3. FRONT PANEL FEATURES
1. POWER
Use this rocker switch to turn the unit on or off. This
connects/disconnects the AC power to the AC power
transformer.
The amplifi er is on when the top of the switch is pressed
in. It is off when the bottom of the switch is pressed in.
The Power LED will light when the power switch is on.
2. VENTILATION
Keep these ventilation slots free from any obstructions,
so the air may fl ow freely and cool down the power
transistors.
3. OL LEDs
This is short for “overload.” These red LEDs indicate when
the output of the amplifi er has reached the maximum, and
is right on the edge of clipping. Clipping is bad for speakers
and should be avoided.
It is okay if the OL LED blinks occasionally. It means that
the transient peaks of the music are just hitting the full
output of the amplifi er.
However, if the OL (overload) LED is blinking frequently or
continuously, turn down the source signal (i.e., the mixer’s
master faders) or the amplifi er’s Level controls.
4. SIG LEDs
5. LEVEL CONTROLS
These two knobs control the levels of Channels A and B.
The knobs are detented to make it easy to set both controls
to the same level. Usually, these controls are set all the
way up.
You might turn them down slightly if you have higheffi ciency speakers. Also, you could use them to control the
level of line-level sources such as a CD player connected
directly to the amplifi er without a preamplifi er or mixer.
The amplifi ers are designed so that a +3.4 dBu (1.15V rms)
input signal drives the amplifi er to full power into 4 ohms:
CAZ800 = 300 watts per channel into 4 ohms
CAZ1400 = 450 watts per channel into 4 ohms
CAZ2500 = 750 watts per channel into 4 ohms
This equates to a gain of about 30 dB (30 dB, 32 dB, and 34
dB respectively). The graphics around the knob indicate full
gain of (about) 30 dB when the knob is all the way up (fully
clockwise).
After you have set the levels for the mixer (or other signal
source), adjust the Level controls on the amplifi er as the
fi nal adjustment to set the overall volume for the system.
In stereo and mono mode, use both level controls to control
the levels going to each speaker. In bridged mode, turn the
channel B level control down, and just use the channel A
control.
This is short for “signal present.” These green LEDs
indicate when a signal is present after the Level
controls, at the output stage of the power amplifi er. If
the Level controls are turned all the way down (fully
counterclockwise), these indicators will not light.
1
ON
POWER
OFF
2 3
-
4
SIGOLSIGOL
30
dB dB
OO
AB
30
-
OO
5
4 – CAZ Series
4. REAR PANEL FEATURES
1. SCREW TERMINAL INPUTS
The CAZ series amplifi ers give you three options for
connecting the input signal — these screw terminals,
and XLR or 1/4” connectors via the "combination" input
described below.
You can connect either a balanced or an unbalanced signal
here.
The screw terminal and the combination inputs are in
parallel, and are identical electrically. Since these two
inputs are in parallel, you shouldn’t connect more than one
source to the INPUT A or INPUT B jacks.
2. COMBINATION INPUTS
These inputs allow you to connect balanced XLR plugs or
1/4" TRS or TS plugs from line-level sources.
Use balanced connections where possible, as these offer
better rejection of noise than unbalanced lines.
Use high-quality, three-conductor shielded cable for
balanced connections. The better the shield, the better the
audio signal is protected from induced EMI and RFI.
3. SUBSONIC FILTER
Turn this switch on to engage a low-frequency cutoff (high-
pass) fi lter at 30 Hz. The frequency range below 30 Hz is
attenuated.
The CAZ series amplifi ers can amplify signals below 20 Hz,
but most speakers can’t reproduce frequencies that low.
By engaging the SUBSONIC FILTER, you allow the amplifi er
to power only the frequencies you can hear. In addition,
this fi lter can reduce low-frequency stage noise (footsteps)
and accidental microphone pops that could damage a
loudspeaker.
4. CLIP LIMIT
When engaged, the CLIP LIMIT switch protects your
loudspeakers from the effects of clipping. It is designed to
be virtually transparent, meaning you probably won’t even
notice any audible difference when the switch is turned on.
We recommend that you leave this switch on at all times.
However, if you are working at quiet levels, or you have
already placed a compressor/limiter in the signal path, you
can leave the CLIP LIMIT switch off.
5. AMP MODE
This switch determines the input signal routing within the
amplifi er. For most applications, you will use the STEREO
setting. However, some applications might be better suited
for using either the MONO or the BRIDGE setting.
STEREO: This is the normal position used when amplifying
stereo signals. This mode accepts separate left and right
inputs (A and B), and routes them to the CHANNEL A
and CHANNEL B outputs. Each channel’s Level control
adjusts the gain for its own channel, and each channel is
independent.
MONO: This mode is used when you want to send a mono
signal to both outputs. It accepts a single input (INPUT
A), and routes it to both the CHANNEL A and CHANNEL B
outputs. Each channel’s Level control adjusts the gain for
its own channel.
BRIDGE: This mode accepts a single input (INPUT A), and
uses both amplifi er outputs to double the power to one
speaker. Use the Channel A Level control to adjust the gain
(turn the Channel B Level control all the way down). The
hookup diagrams show how to connect a speaker in Bridge
mode.
Leave this off if you are powering a subwoofer, or if your
speakers can reproduce low frequencies such as the kick
drum range.
B (+)
B (--)
GND
A (--)
A (+)
2 3
PUSH
LINE
(BALANCED)
PUSH
LINE
(BALANCED)
INPUT
B
OFF
SUBSONIC
FILTER AT 30Hz
INPUT
A
OFF
CLIP LIMIT
INPUT
CONNECTION
ON
AMP MODE
MONO
STEREO
BRIDGE
ON
1
4 5
CAZ2500-AMPLIFIER
CHANNEL B BRIDGED CHANNEL A
B (+) B (-)
(+) (-) A (+) A (-)
CAUTION
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPARATUS TO RAIN OR
MOISTURE. SEE INSTRUCTIONS BEFORE USING.
SERIAL / DATE CODE
BREAKER
MANUFACTURED IN
2004 LOUD TECHNOLOGIES INC.
"EAW" IS A REGISTERED TRADEMARK
CHINA
OF LOUD TECHNOLOGIES INC.
CAZ Series – 5
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