Congratulations on your purchase of the CS 6000/ CS 4000, a power amplifier designed for years of reliable, flawless operation under
rigorous use. This amplifier offers the sonic superiority and unsurpassed reliability for which Peavey is famous, while remaining surprisingly compact. Advanced technology and extensive protection circuitry allow operation with greater efficiency into difficult loads
and power conditions. The DDT™ (Distortion Detection Technique)circuitry ensures trouble-free operation into loads as low as 2
ohms. DDT protects drivers and ensures that sonic integrity is maintained, even in extreme overload conditions. The CS's high-efficiency design uses multi-rail class-H technology to produce high output power while reducing losses. Massive heat-sinks and a high
volume cooling fan maintains a lower overall operating temperature, resulting in longer output transistor life. For your safety, read
the important precautions section, as well as input, output and power connection instructions.
Although the CS 6000 amplifier is simple to operate and housed in an ultra-strong steel chassis, improper use can be dangerous.
This amplifier is very highpowered and can put out high voltages and sizable currents at frequencies up to 30 kHz. Always use safe
operating techniques when operating this amplifier.
Before you send signal through your amplifier, it is very important to ensure that the product has the proper AC line voltage
supplied. You can find the proper voltage for your amp printed next to the IEC line (power) cord on the rear panel of the
unit. Each product feature is numbered. Refer to the front panel diagram in this manual to locate the particular features next
to its number.
Please read this guide carefully to ensure your personal safety as well as the safety of your amplifier.
FEATURES:
• Distortion Detection Technique (DDT)
• Line voltage selector switch
• High volume cooling fan
• 100 Hz, 24dB/octave, Linkwitz-Riley Crossover
• Front panel LEDs: DDT, Signal,Thermal Protect and Power
• Switchable 2nd order 40Hz high pass filter
2
SAVE THESE INSTRUCTIONS
Save the carton and packing materials!
1
Should you ever need to ship the unit,
use only the original factory packing.
For replacement packaging, call Peavey
Customer Service Department directly.
Read all documentation before operat-
2
ing your equipment. Retain all documentation for future reference.
Follow all instructions printed on
3
unit chassis for proper operation.
Never hold a power switch or circuit
4
breaker in the "ON" position if it
won’t stay there by itself!
Do not use the unit if the electrical
5
power cord is frayed or broken.
The power supply cords should be
routed so that they are not likely to
be walked on or pinched by items
placed upon or against them.
Always operate the unit with the AC
6
ground wire connected to the electrical system ground. Precautions should
be taken so that the means of grounding of a piece of equipment is not
defeated.
Damage caused by connection to
7
improper AC voltage is not covered by
any warranty. Mains voltage must be
correct and the same as that printed on
the rear of the unit.
Do not ground any hot (red) terminal.
8
Never connect a hot (red) output to ground
or to another hot (red) output!
Power down and disconnect units from
9
mains voltage before making connections.
Do not drive the inputs with a signal
10
level greater than that required to
enable equipment to reach full output.
Do not run the output of any amplifier
11
channel back into another channel’s
input.
Do not parallel- or series-connect
an amplifier output with any other
amplifier output.
Peavey is not responsible for damage
to loudspeakers for any reason.
Do not connect the inputs or out-
12
puts of amplifiers to any other voltage source such as a battery, mains
source, or power supply, regardless
of whether the amplifier is turned
on or off.
Connecting amplifier outputs to oscil-
13
loscopes or other test equipment while
the amplifier is in bridged mono mode
may damage both the amplifier and test
equipment!
Do not spill water or other liquids
14
into or on the unit, or operate the unit
while standing in liquid.
Do not block fan intake or exhaust
15
ports.
Do not operate equipment on a sur-
face or in an environment which
may impede the normal flow of air
around the unit, such as a bed, rug,
weathersheet, carpet or completely
enclosed rack.
If the unit is used in an extremely
16
dusty or smoky environment the
unit should be periodically blown
free of foreign matter.
Do not use the unit near stoves,
17
heat registers, radiators or other
heat-producing devices.
The equipment power cord should be
18
unplugged from the outlet when left
unused for a long period of time.
Service Information
Do not remove the cover!
Removing the cover will expose you
to potentially dangerous voltages.
There are no user-serviceable parts
inside.
Equipment should be serviced by
qualified service personnel when:
A. The power supply cord or the plug has
been damaged.
B. The equipment has been exposed to
rain.
C. The equipment does not appear to
operate normally or exhibits a marked
change in performance.
D. The equipment has been dropped or
the enclosure damaged.
To obtain service:
contact your nearest Peavey Service
Center, Distributor, Dealer or contact Peavey at 601.483.5365 USA or
visit www.peavey.com for additional
information, email techserve@peavey.
com
3
Installation
Unpacking
Upon unpacking, inspect the amplifier. If you find any damage, notify
your supplier immediately. Only
the consignee may institute a claim
with the carrier for damage incurred
during shipping. Be sure to save the
carton and all packing materials.
Should you ever need to ship the
unit back to Peavey, one of its offices,
service centers or the supplier, use
only the original factory packing. If
the shipping carton is unavailable,
contact Peavey to obtain a replacement.
Because of the complexity of the
design and the risk of electrical shock,
all repairs must be completed only by
qualified technical personnel.
Mounting
The CS 6000/ CS 4000 amplifier will
mount in standard 19" racks. Rear
mounting ears are also provided for
additional support, which is recommended in non-permanent installations like mobile or touring sound
systems.
Connecting Power
The CS 6000/ CS 4000 amplifier power
requirements are rated at 1/8 power
(typical music conditions) and 1/3
power (extreme music conditions). The
maximum power current draw rating
is limited only by the back panel circuit
breaker. Consult the specifications in the
Specification section for figures on the
current that each amplifier will demand.
Make sure the mains voltage is correct
and is the same as that printed on the
rear of the amplifier. Damage caused by
connecting the amplifier to improper AC
voltage is not covered by any warranty.
Always turn off and disconnect the amplifier from
mains voltage before making audio connections.
Also, as an extra precaution, turn the attenuators
down during power-up.
Cooling Requirements
The CS 6000/ CS 4000 amplifier uses a
forced-air cooling system to maintain
a low, consistent operating temperature. Air is drawn into the amplifier
by a fan on the rear panel that forces
air past the heatsink and amplifier
components before exiting the side
and front of the amplifier. If either
amplifier becomes too hot, sensing
circuits will reduce the amplifier
output signal until the amplifier sufficiently cools. The CS 6000/ CS 4000
utilizes one common heat sink and a
single fan, but retains the separate circuitry. NOTE: Maintain an adequate
air supply at the back of the amplifier
and enough space around the front of
the amplifier to allow the cooling air
to escape. If the amp is rack mounted,
do not use doors or covers on
the front of the rack; the exhaust
air must flow without resistance.
If you are using racks with closed
backs, use fans on the rear rack panel
to pressurize the rack and ensure an
ample air supply.
Operating Precautions
Make sure the mains voltage is correct and the same as that printed on the rear of the amplifier. Damage caused by connecting the
amplifier to improper AC voltage is not covered by any warranty. See the Connecting Power section for more information on voltage
requirements.
Remember to have the gain controls turned down during power-up to prevent speaker damage if there is a high signal level at the
inputs. Whether you buy or make them, use good-quality connections, input cables and speaker cables, along with good soldering
technique, to ensure trouble-free operation. Most intermittent problems are caused by faulty cables.
Consult the Wire Gauge Chart to determine proper gauges for different load impedances and cable lengths. Remember that cable
resistance robs amplifier power in two ways: power lost directly to resistance (I2R loss), and by increasing the total load impedance,
thereby decreasing the power demanded of the amplifier. Also, make sure the mode switch is correctly set for the desired application.
See Sections on Stereo and Bridged Mono Mode for more information.
Make certain that there is enough space around the front and rear of the amplifier to allow the heated air to escape.
Suggestion: In racks with closed backs, allow at least one standard-rack-space opening for every mounted power amplifier.
4
Front Panel
33
OVERLOAD
CHANNEL A
20 23
16
6
0
(dB)
LEVEL
26
29
+32
CS 6000
OVERLOAD
CHANNEL B
20 23
16
6
0
(dB)
LEVEL
26
29
+32
1442
AC POWER SWITCH(1)
Pressing the CS 6000/ CS 4000 power switch will alternately turn the amplifier on or off. Once the amplifier has completed its power
on sequence, the switch will light indicating it is on and operational.
INDICATORS
The CS 6000/ CS 4000 amplifier features signal and DDT indication for each channel along with amplifier power and thermal protection indicators.
THERMAL PROTECT LED (2)
If the amplifier temperature rises above its normal operating range, thermal protection circuitry reduces the output power on that
channel until it is safe to return to normal operation. If this happens repeatedly, either reduce the load on the amplifier (detach
one of the speakers), or supply additional cooling to the amplifier, such as a fan. When rack mounting, it is helpful to leave 1 RU
open above and below the amplifier to prevent heat buildup from adjacent units.
Signal Present and DDT (DISTORTION DETECTION TECHNIQUE) LED (3)
The channel LED will light green when a signal is present and red at the onset of clipping. If the LEDs are flashing red
quickly and intermittently, the channel is just at the clip threshold. A steady, bright red glow means the amp is clip limiting,
or reducing gain to prevent severely clipped waveforms from reaching the loudspeakers. See the Distortion Detection Technique section for more information.
INPUT ATTENUATORS (4)
Whenever possible, set the attenuators fully clockwise to maintain optimum system headroom. The input attenuator controls, located
at the front panel (one for channel A, one for channel B), adjust gain for their respective amplifier channels stereo mode. In bridged
mono mode, only the channel A attenuator is active. See the specifications at the end of this manual for standard voltage gain and
input sensitivity information.
When operating in Bridged
Mono mode, the channel A
attentuator controls the output.
The channel B attenuator is
inoperative..
See the section on Bridged Mono
operation for more information
and precautions.
5
Rear Panel
OVERLOAD
CHANNEL A
LEVEL
(dB)
0
6
16
2023
26
29
+32
OVERLOAD
LEVEL
(dB)
0
6
16
2023
26
29
+32
CHANNEL B
CS 6000
8
BREAKER
20A 250V
BREAKER
20A 250V
__
5
AC POWER INLET (5)
is is the receptacle for an IEC line cord, which provides AC power to the unit. Connect the
line cord to this connector to provide power to the unit. Damage to the equipment may result if
improper line voltage is used.
10151112
BRIDGE
BRIDGE
_
SPEAKER OUTPUTS
CLASS 3 WIRING
CHANNEL ACHANNEL B
+
++
76
BRIDGE
STEREO
BRIDGE
ENABLE
DEFEAT
DDT
HIGH
OUT
TM
HIGH
OUT
141113
LINE OUTS
THRU
LOW
OUT
THRU
LOW
OUT
9
CHANNEL A
40 Hz
150 Hz
X-OVER
40 Hz
150 Hz
X-OVER
CHANNEL B
INPUTS
+
A
-
GND
-
B
+
9
The power only breaks
one side of the AC mains.
Hazardous energy may be
present in the enclosure when
the power switch is in the OFF
position.
9
Never break o the ground pin on any equipment. It is provided for your safety. If the outlet
used does not have a ground pin, a suitable grounding adapter should be used and the third wire should be grounded
properly. To prevent the risk of shock or re hazard, always make sure that the amplier and all associated equipment is
properly grounded.
NOTE: FOR U.K. ONLY
As the colors of the wires in the mains lead of this apparatus may not correspond with the colored markings identifying
the terminals in your plug, proceed as follows: (1) e wire which is colored green and yellow must be connected to the
terminal which is marked by the letter E, or by the Earth symbol, or colored green or green and yellow. (2) e wire which is colored blue must be connected to the terminal which is marked with the letter N, or the color black. (3) e wire which is colored
brown must be connected to the terminal which is marked with the letter L, or the color red.
To avoid the risk of electrical shock, do not place ngers or any other objects into empty tube sockets while power is being
supplied to unit.
FAN GRILLE (6)
A two-speed DC fan supplies cool air to the amplier. THIS INTAKE SHOULD NEVER BE BLOCKED! e fan switches to high
speed automatically when the unit requires additional cooling. At idle and cool, the fan runs at low speed. e fan should never
stop unless the amplier is switched OFF or the AC mains power source is interrupted, or if both back panel circuit breakers have
tripped.
Bannana Jack Binding post Speaker Connector (7)
These connectors will accept bannana connectors or wire and can be used instead of the twist lock connectors for connecting
speakers to the amplifiers.
Primary Circuit Breakers (8)
The CS 6000/ CS 4000 has separate power supplies for each channel each protected from overload with its own circuit breaker. Efforts
should be made to correct the cause of the overload, first by disconnecting one output at a time, and then one speaker at a time until
the bad cable or damaged speaker is isolated. If the fuse opens instantly each time you attempt to turn the unit on, it should be taken to
a qualified Peavey Service Center for repair.
6
Rear Panel
COMBO INPUT CONNECTOR (9)
Input connections are made via the 3-pin XLR (pin 2+) or 6.3 mm plug “Combi” connectors on the rear panel of the amplifier. The
inputs are actively balanced. The input overload point is +22 dBu. Screw terminal connections are also available.
CONNECTING OUTPUTS (10)
e CS 6000 has twist lock output connectors. Channel A and Channel B may be accessed individually with 2 conductor connectors, with (+) at terminal 1+ and (-) at terminal 1-. When operating in Bridged mono mode, use the 1+ and 1- connections on the
Bridge output connector.
HIGH OUT JACKS (11)
is 6.3mm (1/4”) jack supplies high-frequency output signals from the activated crossover for patching to this amplier and/or
additional power amplier inputs. Unlike the low-frequency crossover output that is automatically routed to the associated channel, the high-frequency output signal must be patched to some suitable input in order to complete the bi-amped system. is tip/
ring/sleave balanced output can also be patched unbalanced if necessary.
Low/ru Jacks (11a)
is buered, balanced output sources the input signal when the crossover is disabled, and the low output when the crossover is
engaged.
40 Hz SWITCH (12)
This switch is used to activate the LOW CUT filter for the corresponding channel. It is a push-type switch, that requires a small tool to
activate. The IN position routes the input signals through the 40 Hz LOW CUT filter, while the OUT position bypasses the filter. This
filter will cut extremely low frequencies, protecting speakers from the possibility of over-excursion. The filter low-frequency rolloff is
12 dB per octave. The LOW CUT filter for each channel will function independently of the crossover function. This filter is applied to
the amplifier input only and not the low or thru output.
CROSSOVER SWITCH (100 Hz crossover) (13)
This switch is used to activate the 100 Hz crossover for the corresponding channel. It is also a push-type switch and requires
a small tool to activate. The CS 6000/ CS 4000 offers two 100 Hz crossovers. These are designed for use when a subwoofer
is added to the system. With the switch IN, the input signals are routed through the crossover and the low frequencies are
automatically sent to the corresponding channel. At the same time, the high frequencies are sent to the HIGH OUT (9) jack
and must then be patched to the INPUT of the other channel of this amplifier or to another amplifier input to complete the
bi-amped system. With the switch OUT, the crossover is defeated and the input signal is routed directly to the respective
power amp channel. The crossover frequency is fixed at 100 Hz and cannot be changed. The crossover configuration is a
four-pole Linkwitz-Riley approximation.
DDT™ (14)
Peavey’s patented DDT (Distortion Detection Technique) limiter circuit enables the sound technician to maximize the
performance of the amplifier/speaker combination by preventing the power amplifier from clipping. When the onset of
clipping is detected, the limiter engages to prevent damage to the loudpeakers and degradation of sound quality. For this
reason, DDT should always be enabled.
BRIDGE MODE SELECTOR SWITCH (15)
When a 2-channel amplier is operated in the Bridge mode, it is converted into a single-channel unit with a power rating equal to
the sum of the power rating for each channel, at a load of twice that of the single-channel rating. For example, the CS 6000 is rated
at 2900 Watts per channel into 2 Ohms. e bridge rating is 5800 Watts into a 4 Ohm minimum load. See Specication section for additional bridge ratings. Bridge mode operation is accomplished by placing the MODE switch in the BRIDGE position, and using
a twist lock connector connected to the Bridge connector or using the terminals labeled Bridge on the binding post/ bannana jack
connector. All CHANNEL B input functions are defeated and serve no purpose now.
The input XLR connectors are wired according to standard practive for balanced interconnections, with pin 2 (+), pin 3(-) and pin 1
ground. The TRS connectors are wired with Tip (+), Ring (-), and Sleeve ground.
7
Operation Modes
Stereo Operation
For stereo (dual channel) operation, turn the amplifier off and set the mode select switches on the back panel to the
OUT (extended) position. In this mode, both channels operate independently of each other with their input attenuators
controlling their respective levels. For example, a signal at channel A’s input produces an amplified signal at channel A’s
output, while a signal at channel B’s input produces an amplified signal at channel B’s output.
Bridged Operation
Both amplifier channels can be bridged together to make a very powerful single-channel monaural amplifier. Use
extreme caution when operating in bridged mode; potentially lethal voltage may be present at the output terminals. To
bridge the amplifier, depress the rear panel Bridge Mode switch (17) to the IN position. Direct the signal to channel
A’s input and connect the speakers across pin +1 and pin -1 of the Bridge, twist-lock output connector or the binding
post terminals labeled Bridge.
Unlike the Stereo Mode, in which one side of each output is at ground, in the Bridged Mode
both sides are hot. Pin +1 is Channel A’s side, which is the same polarity as the input. The minimum nominal load impedance in the Bridge Mode is 4 ohms, which is equivalent to driving
both channels at 2 ohms. Driving bridged loads of less than 4 ohms will activate DDT™ circuitry,
resulting in a loss of power and potential thermal overload.
8
Protection Features
The CS 6000/ CS 4000 amplifier incorporates several circuits to protect both themselves and loudspeakers under virtually any situation. Peavey has attempted to make the amplifiers as foolproof as possible by making them immune to
short and open circuits, mismatched loads, DC voltage, and overheating. If a channel goes into the Distortion Detection
Technique or DDT™ gain reduction mode, the speaker load remains connected, but clipping percentage is instantly
reduced. DC voltage on the output, excessive subsonic frequencies or thermal overload will cause the channel’s output
to disconnect from the speaker load until the problem is corrected or the amplifier cools down.
Distortion Detection Technique™ (DDT)
Any time a channel is driven into hard, continuous clipping, the DDT circuit will automatically reduce the channel
gain to a level just slightly into clipping, guarding the speakers against the damaging high power continuous square
waves that may be produced. Situations that may activate the DDT circuit include uncontrolled feedback, oscillation, an
improper equipment setting or malfunction upstream from the amplifier. Normal program transients will not trigger
the DDT, only steady, excessive clipping will. The DDT LED will flash on peaks when DDT is active, and will flash
brightly with clipping when DDT is disabled.
Thermal Protection
Internal fans keep the amplifier operating well within its intended temperature range under all normal conditions. If the
amplifier temperature rises above its normal operating range, thermal protection circuitry reduces the output power on
that channel until it is safe to return to normal operation. During this time, the THERMAL PROTECT LED will light
up and the fans will continue to run at high speed.
Short Circuit
If an output is shorted, the overcurrent protection circuit will engage and reduce the output of the amplifier to protect
the output devices. Solid red DDT LEDs and dim signal LEDS is an indication of a short circuit and should be
investigated immediately. To find the cause of the overload, start by disconnecting one output at a time, and then one
speaker at a time until the bad cable or damaged speaker is isolated.
DC Voltage Protection
If a DC or subsonic voltage is present at the outputs, a crowbar circuit engages to prevent loudspeaker damage.
9
Protection Features
Turn-On/Turn-Off Protection
At power-up, the amplifier stays in mute mode with outputs disconnected for several seconds while the power supplies
charge and stabilize. When power is removed, the mute mode engages so that no thumps or pops are heard.
10
Safety
Speaker Protection
All loudspeakers have electrical, thermal and physical limits that must be observed to prevent damage or failure. Too
much power, low frequencies applied to high frequency drivers, severely clipped waveforms and DC voltage can all be
fatal to cone and compression drivers. The Peavey CS 6000/ CS 4000 amplifier automatically protects speakers from DC
voltages and subsonic signals. For more information, see the section on Protection Features. Mid- and high-frequency
speakers, especially compression drivers, are highly susceptible to damage from overpowering, clipped waveforms or
frequencies below their rated pass band. Be extremely careful that the low and mid bands of an electronic crossover are
connected to the correct amplifiers and drivers and not accidentally connected to those for a higher frequency band.
The amplifier’s clipping point is its maximum peak output power and can deliver more power than many speakers can
safely handle. Be sure the peak power capability of the amplifier is not excessive for your speaker system.
To ensure that the speakers never receive excessive power and that the amplifier never clips, use a properly adjusted
external limiter (or a compressor with a ratio of 10:1 or higher) to control power output. In systems with active electronic
crossovers, use one for each frequency band. The clip limiter will automatically limit the duration of continuous square
waveforms applied to the speakers. Some speaker systems are packaged with processors that have power limiting
circuits and should not require additional external limiting.
Do not drive any low-frequency speaker enclosure with frequencies lower than its own tuned frequency. The reduced
acoustical damping could cause a ported speaker to exceed its mechanical limits and permanently deform the voice coil,
even when driven with comparatively low power. Consult the speaker system specifications to determine its frequency
limits.
Amplifier Maintenance and User Responsibility
A CS 6000/ CS 4000 amplifier requires no routine maintenance and should never need any internal adjustment during
its lifetime. Your CS 6000/ CS 4000 amplifier is very powerful and can be potentially dangerous to loudspeakers and
humans alike. It is your responsibility to read the Important Precautions section in the front of this manual and to make
sure that the amplifier is installed, wired and operated properly. Many loudspeakers can be easily damaged or destroyed
by overpowering, especially with the high power available from a bridged amplifier. Read the Speaker Protection
section and always be aware of the speaker’s continuous and peak power capabilities.