Zenith CD 4400 User manual

CD Series Ampliers
User Manual
Order codes:
AMP10 - CD2400
AMP09 - CD4400

www.prolight.co.uk CD Series Ampliers User Manual 2
Safety advice
WARNING
FOR YOUR OWN SAFETY, PLEASE READ THIS USER MANUAL
CAREFULLY BEFORE YOUR INITIAL START-UP!
• Immediately upon receiving this product, carefully unpack the carton and check the contents
to ensure that all the parts are present.
• Before initial start-up, please make sure that there is no damage caused during transportation.
• Should there be any damage, consult your dealer and do not use the equipment.
• Retain the carton and all packaging materials.
• In the event that the equipment must be returned to the supplier, it is important that
the equipment is returned in the original carton and packaging.
• To maintain the equipment in good working condition and to ensure safe operation,
it is necessary for the user to follow the safety instructions and warning notes written in this manual.
• Please note that damages caused by user modications to this equipment are not subject to warranty.
IMPORTANT:
The manufacturer will not accept liability for any resulting damages caused by the non-observance
of this manual or any unauthorised modication to the equipment.
OPERATING DETERMINATIONS
If this equipment is operated in any other way, than those described in this manual, the product may suffer damage and
the warranty becomes void. Incorrect operation may lead to danger e.g: short-circuit, burns and electric shocks etc.
In case of malfunction this unit should be returned for service or inspection.
Do not endanger your own safety and the safety of others!
Incorrect installation or use can cause serious damage to people and/or property.
• Never let the power cable come into contact with other
cables. Handle the power cable and all mains voltage
connections with caution!
• Never remove warning or informative labels from the
equipment.
• Do not open or modify the equipment.
• Do not connect this equipment to a dimmer-pack.
• Do not switch the equipment on and off in short intervals,
as this will reduce the system’s life.
• Only use the equipment indoors.
• Do not expose to ammable sources, liquids or gases.
• Always disconnect the power from the mains when
equipment is not in use or before cleaning! Only handle
the power cable by the plug. Never pull out the plug by
pulling the power cable.
• Make sure that the available voltage
is between 220-240V, 50/60Hz AC.
• Make sure that the power cable is never crimped
or damaged. Check the equipment and the power
cable periodically.
• If the equipment is dropped or damaged, disconnect
the mains power supply immediately. Have a qualied
engineer inspect the equipment before operating again.
• If the equipment has been exposed to drastic temperature
uctuation (e.g. after transportation), do not switch it on
immediately. The arising condensation might damage the
equipment. Leave the equipment switched off until it has
reached room temperature.
• If the product fails to function correctly, discontinue use
immediately. Pack securely (preferably in the original
packing material), and return to your dealer for service.
• Only use fuses of same type and rating.
• Repairs, servicing and power connection must only be
carried out by a qualied technician. THIS UNIT CONTAINS
NO USER SERVICEABLE PARTS.
• WARRANTY: One year from date of purchase.
CAUTION!
KEEP THIS EQUIPMENT
AWAY FROM MOISTURE,
RAIN AND LIQUIDS, AND
OUT OF DAMP/HUMID
ENVIRONMENTS
CAUTION!
TAKE CARE USING
THIS EQUIPMENT!
HIGH VOLTAGE-RISK
OF ELECTRIC SHOCK!!

www.prolight.co.uk CD Series Ampliers User Manual 3
Product overview & technical specications
The Zenith CD Series
feature high power,
outstanding sound quality
and superior stability for
a wide range of installed
sound systems as well
as portable live sound
applications. Automatic
clip limiting along with high
efciency tunnel cooling
and DC fans ensure
reliability time after time.
• Protection circuits: Soft
start, limit, thermal, short
circuit, overload, DC fault
protection & AC power
supply fuse
• LED indicators: Active,
signal & clip
• Input connections:
2 x XLR sockets
(CD2400 only),
4 x XLR sockets
(CD4400 only),
1 x powerCON input
• Output connections:
2 x speakON connectors
(CD2400 only),
4 x speakON connectors
(CD4400 only)
• Additional features:
Switchable stereo,
parallel and bridge and
low pass filter
CD Series Ampliers
Specications CD2400 CD4400
Power output @ 8Ω 2 x 400Wrms 4 x 400Wrms
Power output @ 4Ω 2 x 700Wrms 4 x 700Wrms
Power output bridge @ 8Ω 1 x 1200Wrms 2 x 1200Wrms
Frequency response 20Hz to 20kHz 20Hz to 20kHz
Input sensitivity 0.775V, 32dB or 26dB 0.775V, 32dB or 26dB
Min. Load impedance (Stereo) 4Ω 4Ω
Min. Load impedance (Bridge) 8Ω 8Ω
Power supply 220-240V AC 50/60Hz 220-240V AC 50/60Hz
Power consumption 250W (1/8 power @ 8Ω) 530W (1/8 power @ 8Ω)
Dimensions 88 x 483 x 460mm 88 x 483 x 460mm
Weight 8kg 9.6kg
Order code AMP10 AMP09
88mm
483mm 460mm
CD2400
CD4400

www.prolight.co.uk CD Series Ampliers User Manual 4
Front panel
Technical specications
01 - Clip LEDs - These LEDs ash red to indicate when the
output of the ampli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 LED blinks
occasionally. It means that the transient peaks of the
music are just hitting the full output of the amplier.
Gain control - These knobs control the levels of Channels
A & B (CD2400), or A, B, C & D (CD4400). Usually, these
controls are set all the way up. After you have set the
levels for the mixer (or other signal source), adjust the
Level controls on the amplier as the nal adjustment to
set the overall volume for the system.
In stereo and mono mode, use the level controls to
control the levels going to each speaker.
In bridged mode, turn the Channel B (CD2400) and
Channel B & D (CD4400) level controls down, and just
use Channel A (CD2400) and Channel A & C (CD4400)
level controls.
02 - Signal LEDs - These LEDs illuminate when the amplier
is relieving an input signal.
03 - Power switch - Press this switch to power on the amplier
Ampliers should be the last device in the audio chain to
be powered on.
04 - Active LED - These LEDs illuminate when the amplier is
powered up.
CLIP
SIGNAL
I
O
POWER
CH A
-80
-30
-15
-10
-6
-3
-1
0dB
CH B
-80
-30
-15
-10
-6
-3
-1
0dB
CH C
-80
-30
-15
-10
-6
-3
-1
0dB
CH D
-80
-30
-15
-10
-6
-3
-1
0dB
ACT IVE
CLIP
SIGNAL
ACT IVE
CLIP
SIGNAL SIGNAL
CLIP
CD4400
02 04
03
01 05
I
O
POWER
CH A
-80
0dB
CH B
-80
0dB
CLIP
SIGNAL
CLIP
SIGNAL
ACT IVE
CD2400
02 04
03
01 05

www.prolight.co.uk CD Series Ampliers User Manual 5
Rear panel
01 - These balanced XLR outputs can be used to pass
through the signal to additional power ampliers.
02 - XLR inputs - These inputs allow you to connect balanced
signal. These are wired with pin 2 hot, pin 3 cold and pin
1 ground
03 - Locking speaker connector outputs - These outputs
allow you to connect your speakers
When the amplier is used in bridged mono mode use
Channel A (CD2400) and Channel A & C (CD4400).
04 - Locking power socket - This is where you connect the
detachable locking power cable. Connect the other end
to a 220-240V, 50/60Hz AC outlet.
05 - Amp mode - This switch determines the input signal
routing within the amplier. For most applications stereo
will be used.
Stereo mode - This is the "normal" way of using the
amplier, in which each channel is fully independent.
Separate signals connect at the inputs, the gain knobs
control their respective channels, and separate speakers
connect to each output.
Examples:
• Two-channel (stereo) playback.
• Two independent mono signals, such as main and
monitor mixes.
• Bi-amped operation, with the low frequencies in
Channel A and the highs in Channel B.
Parallel mode - This mode is just like Stereo mode,
except that the inputs for Channel A and Channel B are
internally connected together. A signal into any input
jack will therefore drive both channels directly. Each
channel's gain control still functions as usual, and each
channel feeds its own speaker load. You can patch the
input signal on to additional ampliers by using any of
the remaining input jacks.
Example:
• One mono signal driving both channels, with
independent gain control for each speaker system.
Bridge mode - This mode combines the full power
capabilities of both channels into a single speaker
system. The amplier internally re-congures so that
both channels operate as a unit. This delivers double the
output voltage, resulting in four times the peak power
and three times the sustained power into a single 8- or
4-ohm speaker load. Connections for bridge mono mode
are different to those used in Stereo or Parallel mode.
Example:
• Driving a single 8-ohm speaker with the combined
4-ohm power of both channels.
Precautions: Bridge Mono mode makes it possible
to drive thousands of watts into a single speaker.
AC current consumption will usually be higher. Avoid
excessive signal level, and make sure the wiring and
speaker can handle the power.
SER.NO.:
AC INPUT
INPUT A
INPUT B
LINK B
LINK A
PI N 1: S IG N A L G N D
PIN 2: SIGNAL +
PIN 3: SIGNAL -
STEREO PARALLEL BRIDGE
MODE
26dB
32dB
0.775V
GAIN
MODEL
CD2400
OUTPUT POWER
Stereo
8
Stereo
4
2 x 400W
2 x 700W
1+
CHA CHB BRIDGE
2+
POS
NEG
1+
1-
2+
2-
CH B
1POS
NEG 1
+
-
0106 02 03
0405
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
!
CD4400
INPUT A
LINK A
INPUT B
LINK B
INPUT CLINK C
INPUT D
LINK D
26dB
32dB
0.775V
26dB
32dB
0.775V
STEREO
PARALLEL
BRIDGE
Sensitivity
MODE
Sensitivity
MODE
STEREO
PARALLEL
BRIDGE
OUTPUT C
OUTPUT D
OUTPUT A OUTPUT B
MODEL OUTPUT POWER
Stereo
8
Stereo
4
4 X400W
4 X700W
SER.NO.:
220V-240V 50/60Hz
CHB
POSNEG
1+ 1-
CHD
POSNEG
1+ 1-
CHA
POSNEG
1+ 1-
CHB
POSNEG
2+ 2-
BRIDGE
POSNEG
1+ 2+
CHC
POSNEG
1+ 1-
CHD
POSNEG
2+ 2-
BRIDGE
POSNEG
1+ 2+
06 0601 0102 02
040505 03
06 - The Gain sets the input sensitivity of the amplier dependant on the signal being sent from the pre-amp or mixer etc.

www.prolight.co.uk CD Series Ampliers User Manual 6
Operating instructions
Rack installation
The CD Series is built for 19” racks. The rack you use should be a ‘double door rack’ where you can
open the front and rear panel. When mounting the amplier into the rack, please make sure that there
is enough space around the amplier.
Be careful when mounting the amplier into the rack. Put the heaviest products into the lower part
of the rack. Be aware that fastening the amplier with four screws on the front panel is not enough.
If the racks are being transported or used for mobile use, additionally fasten the products by
connecting the rear brackets with the side or ground bars of the rack. In this way, the amplier
cannot be pushed backwards. The front panel is not designed to absorb acceleration forces
occurring during transportation.
Inputs
Short cables runs improve the sound quality remarkably. Input cables should be short and direct,
since high frequencies will mostly be absorbed if the cables are unnecessarily long. Besides that a
longer cable may lead to humming and noise problems. If the cable runs are unavoidable, you should
use balanced cables.
Outputs
The high damping factor of your amplier supplies a clear sound reproduction.
Unnecessarily long and thin cables will inuence the damping factor and thus the low frequencies
in a negative way. In order to safeguard good sound quality, the damping factor should lie around 50.
The longer a cable has to be the thicker it should be, as a minimum 2.5m2should be used, however
4.0m2or 6.0m2is recommended.
Connect your speaker systems via the locking speaker connectors.

www.prolight.co.uk CD Series Ampliers User Manual 7
Connection to the mains
Connect the amplier only after having made sure that the correct voltage (220-240V) is supplied and
that the ground cable is earthed. This product falls under Class 1. Do not detach the ground cable.
Operation
After having connected your amplier to the mains, turn both gain controls counter clockwise to
the “-80” position. The last product to be switched on is amplier. The “ACTIVE” LED lights up now.
If it does not, check if the amplier is connected to the mains correctly.
After having powered on the amplier, turn the gain controls of your amplier to mid-position.
Now adjust the volume with the gain controls CH A and CH B (CD2400)
or CH A, CH B, CH C and CH D (CD4400).
All important operating modes of the amplier are arranged on the front panel.
If you want to switch off the system, switch off the amplier rst in order to avoid
acoustic shocks on the speakers.
Problem Chart
Operating instructions
Signal - Receiving signal
Clip - Short circuit or impedance too low or signal distorted
Problem Cause Solution
No power The power cable is not connected Check the power cable and any extension cables
No sound
The power cable of the respective product is
not connected correctly or not at all.
Check the power cable and if the plugs are properly
connected with the sockets
The connection socket or the plug is dirty Clean the socket and/or the plug
Noise The input signal is too strong Reduce the input signal via the gain control
Fan does not work,
LEDs do not light up The power cable is not connected Connect the power cable

www.prolight.co.uk CD Series Ampliers User Manual 8
WEEE notice
Correct Disposal of this Product
(Waste Electrical & Electronic Equipment)
(Applicable in the European Union and other European countries
with separate collection systems)
This marking shown on the product or its literature, indicates that it should not be disposed
with other household wastes at the end of its working life. To prevent possible harm to the
environment or human health from uncontrolled waste disposal, please separate this from other
types of wastes and recycle it responsibly to promote the sustainable reuse of material resources.
Household users should contact either the retailer where they purchased this product, or their
local government ofce, for details of where and how they can take this item for environmentally
safe recycling.
Business users should contact their supplier and check the terms and conditions of the
purchase contract. This product should not be mixed with other commercial wastes for disposal.