EAW Stereo Amplifier CAZ1400 User Manual

INSTRUCTION MANUAL  
CAZ2500  
CAZ1400  
CAZ800  
Power Amplifiers  
OL  
SIG  
OL  
SIG  
ON  
POWER  
OFF  
-
dB  
30  
-
O O  
dB  
30  
O O  
A
B
CAUTION  
PUSH  
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,  
DO NOT EXPOSE THIS APPARATUS TO RAIN OR  
MOISTURE. SEE INSTRUCTIONS BEFORE USING.  
INPUT  
INPUT  
B
CONNECTION  
CAZ2500-AMPLIFIER  
SERIAL/DATE CODE  
BREAKER  
OFF ON  
B (+)  
SUBSONIC  
B (--)  
FILTER AT 30Hz  
LINE  
(BALANCED)  
AMP MODE  
GND  
CHANNEL B BRIDGED CHANNEL A  
B (+) B (-) (+) (-) A (+) A (-)  
MONO  
PUSH  
INPUT  
A
MANUFACTURED IN CHINA  
2004 LOUD TECHNOLOGIES INC.  
STEREO  
A (--)  
"EAW" IS  
A
REGISTERED TRADEMARK  
OF LOUD TECHNOLOGIES INC.  
BRIDGE  
A (+)  
OFF ON  
CLIP LIMIT  
LINE  
(BALANCED)  
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• Screw terminal output connectors  
• Detented rotary gain controls  
2. INTRODUCTION  
Congratulations on the purchase of your new EAW  
Commercial power amplifier. 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 amplifier.  
• Signal present and OL (overload) LEDs  
• Variable speed fans and large finned heatsink for  
superior cooling  
• Robust chassis, proven design  
Each EAW Commercial power amplifier 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.  
• Discreet component power amplifiers  
• Double-sided, quality circuit boards  
APPLICATIONS  
• Foreground/Background Music Systems  
• Sound Reinforcement Systems  
• Paging Systems  
The CAZ series amplifiers are designed for continuous duty  
in speech, music, paging and sound reinforcement applications  
in churches, schools, offices, arenas, hotel meeting rooms,  
convention centers, recreation facilities and other venues  
demanding high performance, flexible features, and rugged  
dependability.  
• Continuous-Duty Applications  
UNPACKING  
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 amplifier from  
being overloaded.  
You should visually inspect the outside of the shipping  
carton and note any damage on the shipping bill. After  
unpacking, if you find concealed damage, save the packing  
materials for the carrier’s inspection, notify the carrier  
immediately, and file a shipping damage claim. Although  
EAW Commercial will help in any way possible, it is always  
the responsibility of the receiving party to file any shipping  
damage claim. The carrier will help prepare and file this  
claim.  
The amplifier 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.  
Keep your receipt in a safe place. This is required as proof  
if the amplifier ever needs warranty service.  
The front panel has a rocker power switch with a power  
LED, and each channel has a signal-present LED and an  
overload LED.  
TABLE OF CONTENTS  
The amplifier output stage is fully protected against  
permanent damage caused by overloading, shorts, and extreme  
temperatures.  
1. SAFETY INSTRUCTIONS ............................................2  
2. INTRODUCTION...........................................................3  
3. FRONT PANEL FEATURES ..........................................4  
4. REAR PANEL FEATURES.............................................5  
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  
The front panel incorporates holes for rack mounting, and  
it will take up two rack spaces. There are two handles fitted on  
the front panel for easy transporting.  
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 filter @ 30 Hz on both channels  
• Switchable limiter on both channels  
• Combination 1/4" TRS and XLR line input jacks  
• Screw terminal input connectors (balanced)  
CAZ Series – 3  
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3. FRONT PANEL FEATURES  
1. POWER  
5. LEVEL CONTROLS  
Use this rocker switch to turn the unit on or off. This  
connects/disconnects the AC power to the AC power  
transformer.  
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.  
The amplifier is on when the top of the switch is pressed  
in. It is off when the bottom of the switch is pressed in.  
You might turn them down slightly if you have high-  
efficiency speakers. Also, you could use them to control the  
level of line-level sources such as a CD player connected  
directly to the amplifier without a preamplifier or mixer.  
The Power LED will light when the power switch is on.  
2. VENTILATION  
The amplifiers are designed so that a +3.4 dBu (1.15V rms)  
input signal drives the amplifier to full power into 4 ohms:  
CAZ800 = 300 watts per channel into 4 ohms  
Keep these ventilation slots free from any obstructions,  
so the air may flow freely and cool down the power  
transistors.  
CAZ1400 = 450 watts per channel into 4 ohms  
CAZ2500 = 750 watts per channel into 4 ohms  
3. OL LEDs  
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).  
This is short for “overload.” These red LEDs indicate when  
the output of the amplifier has reached the maximum, and  
is right on the edge of clipping. Clipping is bad for speakers  
and should be avoided.  
After you have set the levels for the mixer (or other signal  
source), adjust the Level controls on the amplifier as the  
fi nal adjustment to set the overall volume for the system.  
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 amplifier.  
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.  
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 amplifier’s Level controls.  
4. SIG LEDs  
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 amplifier. If  
the Level controls are turned all the way down (fully  
counterclockwise), these indicators will not light.  
1
2
3
4
OL  
SIG  
OL  
SIG  
ON  
POWER  
OFF  
-
dB  
30  
-
O O dB  
30  
O O  
A
B
5
4 – CAZ Series  
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4. REAR PANEL FEATURES  
1. SCREW TERMINAL INPUTS  
4. CLIP LIMIT  
The CAZ series amplifiers give you three options for  
connecting the input signal — these screw terminals,  
and XLR or 1/4” connectors via the "combination" input  
described below.  
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.  
You can connect either a balanced or an unbalanced signal  
here.  
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.  
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.  
5. AMP MODE  
This switch determines the input signal routing within the  
amplifier. 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.  
2. COMBINATION INPUTS  
These inputs allow you to connect balanced XLR plugs or  
1/4" TRS or TS plugs from line-level sources.  
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.  
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.  
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.  
3. SUBSONIC FILTER  
Turn this switch on to engage a low-frequency cutoff (high-  
pass) filter at 30 Hz. The frequency range below 30 Hz is  
attenuated.  
The CAZ series amplifiers can amplify signals below 20 Hz,  
but most speakers can’t reproduce frequencies that low.  
BRIDGE: This mode accepts a single input (INPUT A), and  
uses both amplifier 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.  
By engaging the SUBSONIC FILTER, you allow the amplifier  
to power only the frequencies you can hear. In addition,  
this filter can reduce low-frequency stage noise (footsteps)  
and accidental microphone pops that could damage a  
loudspeaker.  
Leave this off if you are powering a subwoofer, or if your  
speakers can reproduce low frequencies such as the kick  
drum range.  
1
2 3  
CAUTION  
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,  
PUSH  
INPUT  
INPUT  
B
DO NOT EXPOSE THIS APPARATUS TO RAIN OR  
CONNECTION  
MOISTURE. SEE INSTRUCTIONS BEFORE USING.  
CAZ2500-AMPLIFIER  
SERIAL/DATE CODE  
BREAKER  
OFF ON  
B (+)  
B (--)  
SUBSONIC  
FILTER AT 30Hz  
LINE  
(BALANCED)  
AMP MODE  
MONO  
GND  
A (--)  
A (+)  
CHANNEL B BRIDGED CHANNEL A  
B (+) B (-) (+) (-) A (+) A (-)  
PUSH  
INPUT  
A
MANUFACTURED IN CHINA  
2004 LOUD TECHNOLOGIES INC.  
"EAW" IS A REGISTERED TRADEMARK  
OF LOUD TECHNOLOGIES INC.  
STEREO  
BRIDGE  
OFF ON  
CLIP LIMIT  
LINE  
(BALANCED)  
4
5
CAZ Series – 5  
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6. FAN VENTS  
9. POWER CORD SOCKET  
Do not obstruct the ventilation openings of the amplifier.  
Here is where you connect the detachable power cord  
included with your amplifier. Plug the other end of the  
power cord into an AC outlet properly configured with the  
voltage required for your particular model.  
7. SPEAKER OUTPUTS  
Connect your speakers to these output screw terminals.  
The hookup diagrams on page 10 show how to connect  
your speakers in various ways.  
Be sure the AC outlet can supply enough current to allow  
full power operation of all the amplifiers plugged into it.  
The outlet should be a three-prong socket that matches the  
power cord.  
There are three pairs of terminals. Use the two outer pairs  
(CHANNEL A and CHANNEL B) when using stereo or mono  
modes.  
Use the center pair (BRIDGED) when using bridge mode.  
Note: When using bridge mode, your speaker's average  
impedance must be 4 ohms or greater.  
This terminal strip is normally covered by a protective  
cover. Remove the two screws and the cover while making  
or undoing connections. Securely refit the cover when you  
have finished making the connections.  
8. BREAKER  
This is a resettable circuit breaker that monitors the  
amount of current being drawn by the amplifier. Under  
normal operating conditions, this should never pop. An  
unusual condition may cause the breaker to pop, such as a  
mains voltage surge occurring at the same time as a peak  
amplifier output.  
Turn the POWER switch off, and push the BREAKER button  
in to reset the circuit breaker. Turn the POWER switch back  
on and the amplifier should resume normal operation. If the  
circuit breaker pops again, something probably isn’t right.  
• Make sure that the total impedance of the speakers  
connected to the outputs is 2 ohms or greater (per channel)  
in stereo mode, or 4 ohms or greater in bridged mode.  
• If the breaker pops right away, even with the Level  
controls turned down and the speakers disconnected, there  
may be something wrong inside the amplifier.  
6
7
8
9
CAUTION  
PUSH  
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,  
DO NOT EXPOSE THIS APPARATUS TO RAIN OR  
MOISTURE. SEE INSTRUCTIONS BEFORE USING.  
INPUT  
INPUT  
B
CONNECTION  
CAZ2500-AMPLIFIER  
SERIAL/DATE CODE  
BREAKER  
OFF ON  
B (+)  
SUBSONIC  
B (--)  
FILTER AT 30Hz  
LINE  
(BALANCED)  
AMP MODE  
GND  
CHANNEL B BRIDGED CHANNEL A  
B (+) B (-) (+) (-) A (+) A (-)  
MONO  
PUSH  
INPUT  
A
MANUFACTURED IN CHINA  
2004 LOUD TECHNOLOGIES INC.  
"EAW" IS A REGISTERED TRADEMARK  
OF LOUD TECHNOLOGIES INC.  
STEREO  
A (--)  
BRIDGE  
A (+)  
OFF ON  
CLIP LIMIT  
LINE  
(BALANCED)  
6 – CAZ Series  
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OPERATING TIPS  
5. OPERATION  
• Do NOT drive any of your electronic equipment into  
clipping, particularly the power amplifiers. This can easily  
damage the loudspeakers.  
The following steps will help you set up your amplifier, and  
get the levels just right.  
GETTING STARTED  
• If driven into clipping, even an amplifier with a power  
output rating lower than the loudspeaker’s power rating  
can cause damage to a loudspeaker.  
1. Be sure the amplifier’s POWER switch is off when  
making any connections to or from the amplifier.  
• Avoid sustained microphone feedback. This can quickly  
cause failure of high frequency drivers.  
2. Turn down both Level controls.  
3. On the rear panel, set the SUBSONIC FILTER switch OFF  
and the CLIP LIMIT switch ON.  
• Sometimes external signal processing is desirable to  
“voice” loudspeakers to accommodate particular program  
material, less than optimum acoustics, feedback control,  
or personal taste. For these purposes, use a suitable  
electronic signal processor. This can be as simple as a 1/3  
octave graphic equalizer or a fully capable DSP (digital  
signal processor) such as the EAW DX810 or MX8750.  
4. Determine which AMP MODE is best for your application.  
CONNECTIONS  
1. In STEREO mode, connect the cables from your mixer  
(or other signal source) main line-level outputs to the  
amplifier’s A and B inputs.  
• Avoid extreme boosts on equalizers as these can cause  
excessive input to the drivers at the boosted frequencies.  
Generally, cutting frequencies is preferred to adjust the  
frequency response.  
2. In MONO or BRIDGE mode, connect one cable from your  
mixer (or signal source) main line-level output to the  
amplifier’s A input only.  
4. In STEREO and MONO modes, connect your speaker  
wires to the CHANNEL A and CHANNEL B screw terminal  
outputs. Take care to observe the correct polarity.  
• With appropriate signal processing, your system should  
produce exceptionally good sound. If it is used in a room  
with problematic acoustics, there is little you can do to  
overcome the room problems with electronic adjustments.  
Your best solution is careful placement and aiming of the  
loudspeakers so most of the sound is directed only at the  
audience.  
The A(+) output terminal connects to the left  
loudspeaker red (+) terminal.  
The A(–) output terminal connects to the left  
loudspeaker black (–) terminal.  
• EAW Commercial amplifiers are capable of producing  
sound levels from speakers that can be damage your  
hearing. Take precautions so that audiences are not  
exposed to such levels. If you must expose yourself to  
these kinds of volume levels, wear adequate hearing  
protection.  
The B(+) output terminal connects to the right  
loudspeaker red (+) terminal.  
The B(–) output terminal connects to the right  
loudspeaker black (–) terminal.  
5. In BRIDGE mode, connect your speaker wires from a single  
loudspeaker to the center pair of screw terminals.  
• Take care when moving or lifting the amplifier. Injury to  
you or damage to the amplifier can result from careless  
handling. Remember to lift by bending your knees, not your  
back.  
6. Plug all the sound system components into suitable AC  
outlets, properly grounded and capable of delivering  
adequate current.  
• Never plug amplifier outputs into anything except speakers.  
7. Make sure your signal source is powered up and delivering  
signal to the amp.  
• Before making connections to an amp or reconfiguring an  
amp’s routing, turn the amp’s level controls down, turn the  
power off, make the changes, turn the power back on, and  
then turn the level controls back up.  
8. Turn the power amplifier’s switch on. Verify that the  
POWER LED lights.  
9. Slowly turn up both Level controls on the amplifier. You  
should hear music and see the SIG LEDs flashing. If the OL  
(Overload) LEDs are flashing, turn down either the Level  
controls on the amp or the source signal’s output level  
controls (i.e., master faders), until the OL LEDs either blink  
occasionally or not at all.  
• If you shut down your equipment, turn off the amplifiers  
fi rst. When powering up, turn on the amplifiers last.  
• Save the shipping box and packing material.  
CAZ Series – 7  
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AC POWER REQUIREMENTS  
RACK MOUNTING  
The amplifier's power cord should be plugged into an AC  
outlet properly configured with the voltage required for  
your particular model.  
The CAZ amplifiers are designed to be mounted in a  
standard rack. They require two rack spaces (2U = 3.5”).  
They also require 15.75” depth inside the rack, including  
the rear support brackets. When designing your rack, put  
the heavier items at the bottom and the lighter items  
toward the top.  
Be sure the AC outlet can supply enough current to allow  
full power operation of all the amplifiers plugged into it.  
The outlet should be a three-prong socket that matches the  
power cord.  
Secure the front panel of the amplifier to the front of  
the rack using four screws with soft washers to prevent  
scratching the panel. In addition, because of the weight  
of the amplifier, you must secure the rear support brackets  
of the amplifier to the back of the rack. You could use a  
support rail or shelf across the back of the rack, or angle  
brackets attached between the rear support rails and  
the rear rails of the rack. This is recommended for all  
components mounted in a rack that is going to be moved  
frequently.  
WARNING: Bypassing the plug’s safety ground pin can  
be dangerous. Don’t do it!  
The AC current demand of an amplifier varies depending  
on several factors, including the load impedance, the crest  
factor, and the duty cycle of the program material. Under  
typical conditions reproducing rock music where musical  
peaks are just below clipping, the amplifiers require the  
following average currents.  
CAZ800 = 5 A  
CAZ1400 = 7 A  
CAZ2500 =10 A  
MAINTENANCE  
Usually, your amplifier will not require regular maintenance  
for normal use. However, you can do several things to keep  
it in good operating and cosmetic condition.  
It is recommended that a stiff supply of AC power be used  
because the amplifier places high current demands on the  
AC line. The more power that is available on the line, the  
louder the amplifier will play and the more peak output  
power will be available for cleaner, punchier bass.  
Testing: Periodically test your system for proper  
performance. A simple test is to play a CD through  
it using well-defined, articulate, wide-range  
program material. Listen to ensure all drivers are  
working properly and for any evidence of distortion  
or other extraneous sounds. Test at several volume  
levels: very low, normal, and high.  
If you have more than one amplifier sharing an AC outlet,  
you should avoid turning them all on at the same time.  
Rather, sequence them on, one at a time, to prevent  
popping the circuit breaker (due to in-rush current).  
Cleaning: Use only a clean dry cloth to dust off  
and clean the surface. Turn off the power to the  
amplifier while you do this.  
THERMAL CONSIDERATIONS  
The power amplifier is fan cooled. Air is drawn through the  
rear panel vents, to cool down the amplifier heatsinks, and  
then expelled through the front panel vents.  
When installing, be sure to allow sufficient air space  
around the front and rear of the amplifier for adequate  
cooling for the heatsinks. Leave at least one rack space  
above and below, and at least 6 inches behind and in front  
of the chassis to allow proper ventilation.  
If the amplifier should overheat, a thermal switch turns  
off the power amplifier, allowing the heatsink to cool  
down. Once the amplifier has cooled to a safe operating  
temperature, the thermal switch resets and reactivates  
the amplifier. If this should occur, identify the cause of the  
problem and take corrective action. For example:  
Provide better ventilation  
Install a fan in the rack to move more air  
Make sure the amplifier is not overloaded with too  
low of a load impedance or by a short circuit on the  
speaker line  
8 – CAZ Series  
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1/4" TS Phone Plugs and Jacks  
6. CONNECTIONS  
“TS” stands for Tip-Sleeve, the two connections available  
on a mono 1/4" phone jack or plug. They are used for  
unbalanced signals.  
Use a high-quality 3-conductor shielded cable to connect  
the signal between the signal source (mixing console,  
equalizer, etc.) and the balanced inputs to the amplifier.  
If you are using unbalanced inputs, use a high-quality  
2-conductor shielded cable. Here are some common audio  
connectors and their internal wiring:  
SLEEVE  
SLEEVE  
TIP  
TIP  
TIP  
SLEEVE  
XLR Connectors  
1/4" TS Unbalanced Wiring  
XLR connectors are commonly wired as follows (according  
to standards specified by the Audio Engineering Society):  
Sleeve = Shield  
Tip = Hot (+)  
2
SHIELD  
HOT  
Loudspeaker Cable  
1
3
COLD  
Use loudspeaker  
Minimum AWG 4 ohm 8 ohm  
SHIELD  
1
cables with a minimum  
conductor size for the  
length you need as  
listed in these tables.  
18  
16  
14  
12  
10  
10 ft  
25  
25 ft  
50  
3
COLD  
2
HOT  
25  
75  
SHIELD  
COLD  
HOT  
1
This will minimize power  
losses to less than 0.5  
dB. The cable lengths  
listed are “up to”  
3
50  
125  
200  
2
100  
XLR Balanced Wiring  
Min Metric WG 4 ohm 8 ohm  
lengths. For in-between  
lengths, use the next  
larger conductor  
gauge. Using larger  
than the recommended  
conductor size is  
Pin 1 = Shield  
Pin 2 = Hot (+)  
Pin 3 = Cold (–)  
12  
14  
16  
20  
25  
3 m  
8
8 m  
15  
8
25  
1/4" TRS Phone Plugs and Jacks  
15  
30  
40  
“TRS” stands for Tip-Ring-Sleeve, the three connections  
available on a stereo 1/4" or balanced phone jack or plug.  
TRS jacks and plugs are used for balanced signals and  
stereo headphones.  
always permissible.  
Using smaller than  
60  
recommended conductor size will result in higher power  
losses.  
RING SLEEVE  
SLEEVE RING TIP  
The recommended conductor gauges are listed for  
AWG (American Wire Gauge) and Metric WG (Metric  
Wire Gauge). Note that smaller AWG numbers = larger  
conductors and smaller Metric WG numbers = smaller  
conductors. The Metric WG is equal to ten times the  
nominal conductor diameter in millimeters.  
TIP  
RING  
TIP  
SLEEVE  
1/4" TRS Balanced wiring  
Sleeve = Shield  
Tip = Hot (+)  
Longer Lengths  
Ring = Cold (–)  
For cable lengths over 200 feet / 60 m at 8 ohms, and over  
100 feet / 30 m at 4 ohms, the conductor sizes needed  
for less than 0.5 dB power losses are rarely practical for  
physical and cost reasons.  
As a practical compromise for these situations the  
recommended conductor gauge is 10 AWG or 25 metric.  
CAZ Series – 9  
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7. HOOKUP DIAGRAMS  
STEREO HOOKUP  
CAUTION  
FROM MIXING CONSOLE  
PUSH  
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,  
DO NOT EXPOSE THIS APPARATUS TO RAIN OR  
MOISTURE. SEE INSTRUCTIONS BEFORE USING.  
INPUT  
INPUT  
B
CONNECTION  
CAZ2500-AMPLIFIER  
BREAKER  
SERIAL/DATE CODE  
STEREO MAIN OUT  
+
OFF ON  
B (+)  
SUBSONIC  
FILTER AT 30 HZ  
B (--)  
LINE  
(BALANCED)  
AMP MODE  
MONO  
GND  
A (--)  
A (+)  
CHANNEL B BRIDGED CHANNEL A  
B (+) B (-) (+) (-) A (+) A (-)  
PUSH  
INPUT  
A
MANUFACTURED IN CHINA  
2004 LOUD TECHNOLOGIES INC.  
STEREO  
BRIDGE  
"EAW" IS  
A
REGISTERED TRADEMARK  
OF LOUD TECHNOLOGIES INC.  
OFF ON  
CLIP LIMIT  
+
LINE  
(BALANCED)  
AMP MODE SWITCH  
STEREO  
+
+
Passive Speakers (EAW Commercial VR21)  
MONO HOOKUP  
CAUTION  
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,  
PUSH  
INPUT  
INPUT  
B
DO NOT EXPOSE THIS APPARATUS TO RAIN OR  
CONNECTION  
MOISTURE. SEE INSTRUCTIONS BEFORE USING.  
CAZ2500-AMPLIFIER  
BREAKER  
SERIAL/DATE CODE  
FROM MIXING CONSOLE  
MONO MAIN OUT  
OFF ON  
B (+)  
SUBSONIC  
FILTER AT 30 HZ  
LINE  
(BALANCED)  
B (--)  
AMP MODE  
MONO  
GND  
A (--)  
A (+)  
CHANNEL B BRIDGED CHANNEL A  
B (+) B (-) (+) (-) A (+) A (-)  
PUSH  
INPUT  
STEREO  
A
BRIDGE  
MANUFACTURED IN CHINA  
2004 LOUD TECHNOLOGIES INC.  
"EAW" IS  
A
REGISTERED TRADEMARK  
OF LOUD TECHNOLOGIES INC.  
OFF ON  
CLIP LIMIT  
+
LINE  
(BALANCED)  
AMP MODE SWITCH  
MONO  
+
+
Passive Speakers (EAW Commercial VR21)  
BRIDGED HOOKUP  
CAUTION  
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,  
PUSH  
INPUT  
INPUT  
B
DO NOT EXPOSE THIS APPARATUS TO RAIN OR  
CONNECTION  
MOISTURE. SEE INSTRUCTIONS BEFORE USING.  
CAZ2500-AMPLIFIER  
BREAKER  
SERIAL/DATE CODE  
OFF ON  
B (+)  
B (--)  
FROM MIXING CONSOLE  
MAIN OUT  
SUBSONIC  
FILTER AT 30 HZ  
LINE  
(BALANCED)  
AMP MODE  
MONO  
GND  
A (--)  
A (+)  
CHANNEL B BRIDGED CHANNEL A  
B (+) B (-) (+) (-) A (+) A (-)  
PUSH  
INPUT  
MANUFACTURED IN CHINA  
2004 LOUD TECHNOLOGIES INC.  
STEREO  
A
BRIDGE  
"EAW" IS  
A
REGISTERED TRADEMARK  
OF LOUD TECHNOLOGIES INC.  
OFF ON  
CLIP LIMIT  
+
LINE  
(BALANCED)  
AMP MODE SWITCH  
BRIDGE  
+
Passive Speaker (EAW Commercial VR18)  
10 – CAZ Series  
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DAISY CHAINING  
CAUTION  
FROM MIXING CONSOLE  
STEREO MAIN OUT  
PUSH  
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,  
DO NOT EXPOSE THIS APPARATUS TO RAIN OR  
MOISTURE. SEE INSTRUCTIONS BEFORE USING.  
INPUT  
INPUT  
B
CONNECTION  
CAZ2500-AMPLIFIER  
BREAKER  
SERIAL/DATE CODE  
+
OFF ON  
B (+)  
B (--)  
SUBSONIC  
FILTER AT 30 HZ  
E  
NCED)  
AMP MODE  
MONO  
GND  
A (--)  
A (
CHANNEL B BRIDGED CHANNEL A  
B (+) B (-) (+) (-) A (+) A (-)  
PUSH  
INPUT  
A
MANUFACTURED IN CHINA  
2004 LOUD TECHNOLOGIES INC.  
STEREO  
BRIDGE  
"EAW" IS  
A
REGISTERED TRADEMARK  
OF LOUD TECHNOLOGIES INC.  
OFF ON  
CLIP LIMIT  
+
CED)  
AMP MODE SWITCH  
STEREO  
+
+
Passive Speakers (EAW Commercial VR21)  
CAUTION  
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,  
P
INPUT  
INPUT  
B
DO NOT EXPOSE THIS APPARATUS TO RAIN OR  
CONNECTION  
MOISTURE. SEE INSTRUCTIONS BEFORE USING.  
CAZ2500-AMPLIFIER  
BREAKER  
SERIAL/DATE CODE  
FF ON  
B (+)  
B (--)  
SUBSONIC  
FILTER AT 30 HZ  
LINE  
(BALAN
AMP MODE  
MONO  
GND  
A (--)  
A (+)  
CHANNEL B BRIDGED CHANNEL A  
B (+) B (-) (+) (-) A (+) A (-)  
P
INPUT  
A
MANUFACTURED IN CHINA  
2004 LOUD TECHNOLOGIES INC.  
STEREO  
BRIDGE  
"EAW" IS  
A
REGISTERED TRADEMARK  
OF LOUD TECHNOLOGIES INC.  
OFF ON  
CLIP LIMIT  
LINE  
(BALANCED)  
AMP MODE SWITCH  
STEREO  
+
+
Passive Speakers (EAW Commercial VR21)  
CAZ Series – 11  
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8. SPECIFICATIONS  
Continuous Sine Wave Average Output Power,  
both channels driven, 20 Hz to 20 kHz  
Physical Dimensions and Weight  
Height:  
Width:  
Depth:  
Weight:  
3.5 in/89 mm  
19.0 in/483 mm  
15.7 in/400 mm  
CAZ800  
480 W  
300 W  
205 W  
CAZ1400  
800 W  
450 W  
CAZ2500  
1400 W  
750 W  
2 ohms:  
4 ohms:  
8 ohms:  
CAZ800:  
CAZ1400:  
CAZ2500:  
43.6 lb/19.8 kg  
48.5 lb/22.0 kg  
56.2 lb/25.5 kg  
310 W  
575 W  
Bridged Mono Operation, 20 Hz to 20 kHz  
Warranty  
5 years, parts and labor  
CAZ800  
800 W  
560 W  
CAZ1400  
1400 W  
900 W  
CAZ2500  
2500 W  
1500 W  
4 ohms:  
8 ohms:  
DISCLAIMER  
Note: Power ratings are specified at 120 VAC line voltage.  
EAW Commercial continually engages in research related  
to product improvement, new materials, and production  
methods. Design refinements are introduced into existing  
products without notice as a routine expression of that  
philosophy. For this reason, any current EAW Commercial  
product may differ in some respect from its published  
description, but will always equal or exceed the original design  
specifications unless otherwise stated.  
Power Bandwidth  
5 Hz to 50 kHz (+0, –3 dB)  
Frequency Response  
25 Hz to 25 kHz (+0, –1 dB)  
Distortion  
THD and SMPTE IMD; 20 Hz to 20 kHz  
< 0.03 % @ 8 ohms  
Signal-to-Noise Ratio  
> 100 dB below rated power into 4 ohms  
“EAW Commercial” is a trademark of LOUD Technologies  
Inc. All other brand names mentioned are trademarks or  
registered trademarks of their respective holders, and are  
hereby acknowledged.  
Channel Separation  
> 90 dB @ 1 kHz  
Damping Factor  
> 300 @ 1 kHz and below  
Input Impedance  
20 kbalanced  
10 kunbalanced  
Input Sensitivity  
1.15 V (+3.4 dBu) for rated power into 4 ohms  
Gain  
CAZ800:  
CAZ1400:  
CAZ2500:  
30 dB  
32 dB  
34 dB  
Maximum Input Level  
9.75 Vrms (+22 dBu)  
Turn On Delay  
2.5 seconds  
Subsonic Filter  
– 9 dB @ 30 Hz  
Topology  
CAZ800, CAZ1400:  
CAZ2500:  
Class AB  
Class H  
Cooling  
Dual variable-speed fans with back to front airflow  
Indicators  
Channels A and B  
SIG (Signal Present), OL (Overload)  
POWER  
Current Consumption  
CAZ800  
0.5 A  
3.9 A  
5.0 A  
7.0 A  
CAZ1400  
CAZ2500  
1.0 A  
8.1 A  
10.0 A  
17.2 A  
Idle  
0.5 A  
5.1 A  
6.7 A  
10.6 A  
Musical Program @ 8Ω  
Musical Program @ 4Ω  
Musical Program @ 2Ω  
AC Power Requirements  
U.S.  
Europe  
120 VAC, 60 Hz  
240 VAC, 50 Hz  
12 – CAZ Series  
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9. BLOCK DIAGRAM  
T E R M I N A L S  
S C R E W  
CAZ Series – 13  
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operation. Ensure level controls on electronic crossovers  
and associated amplifiers are correctly set and that all  
cables and connections for such equipment are connected  
and working properly.  
10. TROUBLESHOOTING  
Sound system difficulties usually fall into one of the  
following categories.  
No Sound or Low Output  
• Loudspeaker not working properly. Swap with a good one.  
• Loudspeaker cables or connectors are not wired correctly  
or they are faulty. Check all cabling, referring to these  
instructions for the correct connections. The best way to  
check a suspect cable is to swap it with a known good  
cable. Read the loudspeaker’s input panel to verify correct  
cable connections.  
No Power  
• Make sure the AC outlet is live and the POWER switch on.  
• Is the LED next to the POWER switch illuminated? If not,  
make sure the AC outlet is live.  
• Has the BREAKER switch popped?  
• Loudspeaker is not working. Connect the loudspeaker cable  
to a known good loudspeaker leaving all equipment set to  
the same levels. If the problem disappears, the loudspeaker  
is probably not working correctly.  
• The fuses inside the amplifier have blown. These are not a  
user-serviceable. See next page about service.  
One side is louder than the other  
• Are the channel Level controls turned up? Slowly turn them  
up and see if you hear anything.  
• Are both Level controls set to the same position?  
• Check your source signal to make sure the left and right  
signals are balanced.  
• Is the signal source turned up? Make sure the signal level  
from the mixing console (or whatever device immediately  
precedes the amplifier) is high enough to produce sound in  
the amplifier. The SIG LEDs should be blinking to indicate  
that signal is present.  
• Are the speaker impedances matched? Different speaker  
loads can cause different volume levels on each side.  
• Try switching sides: Turn off the amp, swap the speaker  
cables at the amp, turn the amp back on. If the same side is  
still louder, the problem is with your speaker cabling. If the  
other side is louder now, the problem is with the mixer, the  
amp, or the line-level cabling.  
• If the speakers are wired for BRIDGE mode, make sure the  
AMP MODE switch is set to BRIDGE.  
• If the amplifier has gotten extremely hot, the thermal  
protection circuit may have activated. Allow the amplifier  
to cool down and normal operation should resume.  
Poor Bass response  
• Are there fuses in the speakers, or in-line fuses in the  
speaker wire? Check to see if they’re blown.  
• Check the polarity of the speaker cable connections. You  
may have your positive and negative reversed at one end of  
one speaker cable.  
Distorted Sound  
As the music gets loud, the amp shuts down  
• The power amplifier is clipping. The signal level is  
exceeding the limits of your system and you must reduce  
the level from your mixer or signal source.  
• Make sure the OL LEDs are not lighting continuously. If so,  
turn down the signal source or the amp Level controls.  
• Ensure that no equipment in the signal chain is being over  
driven. For example: input(s) or summing bus in the mixing  
console, equalizers etc.  
• Can the amp breathe? It needs plenty of fresh air to stay  
cool. Do not block the ventilation holes.  
Noise/Hum  
• Is the input connector plugged completely into the  
jack? Check the speaker connections and verify that all  
connections are tight and that there are no stray strands of  
wire shorting across the speaker terminals.  
• Check the signal cable between the mixer and the  
amplifier. Make sure all connections are good and sound.  
• Make sure the signal cable is not routed near AC cables,  
power transformers, or other EMI-inducing devices.  
• If possible, listen to the signal source with headphones  
plugged into the console. If it sounds bad there, the  
problem is not in the amplifier.  
• Is there a light dimmer or other SCR-based device on the  
same AC circuit as the amplifier? Use an AC line filter, or  
plug the amplifier into a different AC circuit.  
• Loudspeakers not working properly.  
Partial Sound (frequency band missing)  
• If possible, listen to the signal source with headphones  
plugged into the console. If it sounds noisy there, the  
problem is not in the amplifier.  
• Incorrect EQ settings in the electronic equipment. Ensure  
all EQ settings and filters on the mixing console or  
preamplifier and on other equipment are set for normal  
• Is there a cable-TV audio feed in your system? An incorrect  
ground may causes a "ground loop" hum.  
14 – CAZ Series  
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11. SERVICE INFORMATION  
In the event that your CAZ amplifier should require  
servicing, please follow these instructions.  
12. EAW COMMERCIAL  
WARRANTY  
Warranty: LOUD Technologies Inc. requires its authorized  
EAW Commercial distributors to abide by the following  
warranty terms for all EAW Commercial brand products  
(all dates are from the date of delivery from an Authorized  
EAW Commercial Distributor to the end user/installation  
site): Loudspeakers – 5 years; Active Electronics – 5 years;  
Accessories – 2 years.  
Important: Retain your sales receipt as this is proof of your  
warranty coverage period.  
1. Call EAW Commercial Tech Support at 1-888-337-7404,  
7 am to 5 pm PST (Monday-Friday), to verify the problem  
and obtain a Return Authorization (RA) Number. Be sure to  
have the serial number of the unit when you call. You must  
have a Return Authorization Number in order to obtain  
warranty service at the factory or at an authorized service  
center. You can also email EAW Commercial Tech Support  
What Is Covered: Defects in workmanship and materials  
and against malfunctions. EAW Commercial distributors  
must remedy all such defects and malfunctions without  
charge for parts or labor if the warranty applies. Final  
determination of warranty coverage lies solely with each  
authorized EAW Commercial distributor.  
2. Pack the unit in its original packaging. THIS IS VERY  
IMPORTANT. EAW Commercial is not responsible for  
any damage that occurs during shipping due to non-  
conventional packaging. Original packaging helps to  
minimize the possibility of shipping damage.  
What Is Not Covered: This warranty does not extend  
to damage or malfunctions resulting from, but not limited  
to, shipment, improper installation, misuse, neglect,  
abuse, normal wear, accident, or to any product on  
which the serial number has been modified or removed.  
Exterior defects in or damage to the exterior appearance  
are specifically excluded from this warranty. EAW  
Commercial distributors shall not be liable for incidental  
or consequential damages resulting from the use of EAW  
Commercial products. Repairs and/or modifications by  
other than an Authorized EAW Commercial Distributor  
automatically voids this warranty.  
3. Include a legible note stating your name, (no P.O. boxes),  
daytime phone number, Return Authorization Number, and  
a detailed description of the problem, including how we  
can duplicate it.  
4. Write the Return Authorization Number in BIG BOLD PRINT  
on the top of the box.  
5. Tech Support will tell you where to ship the unit when you  
call for an RA Number. We suggest insurance for all forms  
of cartage.  
EAW Commercial Technical Support  
Phone (USA/Canada)  
888-337-7404  
Phone  
Fax  
425-892-6503  
425-485-1152  
Address  
One Main Street  
Whitinsville, MA 01588  
Web site  
e-mail  
CAZ Series – 15  
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EAW Commercial A LOUD Technologies Inc. Company  
EAW Commercial | One Main Street | Whitinsville, MA 01588 USA | TEL toll free within US/Canada 888.337.7404  
TEL outside US 425.892.6503 | FAX 425.485.1152 | www.eawcommercial.com  
© 2004 LOUD Technologies Inc. All Rights Reserved.  
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