Chevin A Series User manual

Models:
A750 - A1000 - A1500 - A2000
A2500 - A3000 - A5000 - A6000
Q6 - Q900
A Series
A Series
Manual
Professional
Power Amplifiers

Contents
Contents
2
Unpacking 3
Installation 3
Environmental & cooling 3
Voltage selection 3
AC wiring 3
Mains power supply 3
Three phase systems 3
Input connections 4
Output connections 4
Loudspeaker power ratings 5
Pre-Set Limiter 5
Loudspeaker Impedance 5
Mono Bridge Mode 6
Operation 7
Power up/Power down 7
Protection systems 7
Sound levels 7
Maintenance/Servicing 7
Damage 7
Front & Rear Panels 8
A750/A1000/A1500/A2000/A3000 8
Q6 9
A2500 10
A5000/A6000 11
Q900 12
The Chevin Warranty 13
General specification 14-15

Installation
Unpacking
■Amplifier:
●A2500 monoblock: One Neutrik Speakon plug
●A750/A1000/A1500/A2000/A3000/A5000/A6000: Two Neutrik Speakon plugs
●Q6/Q900: Four Neutrik Speakon plugs
■User manual & warranty card
If any item is missing or damaged, contact your nearest dealer immediately
■■Please make a note of the serial number (see rear panel):
■■Please complete & return the warranty card.
Failure to register may result in delays if you require warranty service. See the back of
this manual for full warranty details.
Unpacking & Installation
3
Read this section before using the amplifier. Consult an authorised Chevin dealer if
you have any doubts.
■A Series amplifiers draw in air at the back and expel it at the front: keep both front and rear
of the amplifier free from obstruction.
■The amplifier may be used free-standing or installed in a 19” rack. The rear of the chassis
should be supported
■The amplifier is factory set to your local supply voltage.
▲Warning: The voltage should only be changed by an authorised Chevin dealer.
The amplifier connects to the mains supply via a fixed power cable. The wires in the power
cable are colour-coded according to European standard:
Green / Yellow - Earth Blue - Neutral Brown - Live
Nota Bene:
■The live connector in certain 115V models is coloured red.
■The amplifier must be connected to a 3-pin grounded outlet via a 3-pin connector of
sufficient voltage and current rating. If the connector has provision for fitting a fuse, a
suitable fuse must be fitted.
■A5000, A6000 and Q900 models have 2 power cables.
▲Warning: All Chevin amplifiers must be earthed!
The power rating of the supply should be at least twice the total audio output of the system.
▲Electric Shock Hazard! The amplifier must be connected to an adequately rated
grounded outlet.
▲Fire Hazard! All cables, switch gear, et al, must be adequately rated to avoid the risk of
overheating and fire.
The neutral current will not balance on three-phase systems.
■Use individual neutral connections from each phase outlet back to the distribution point.
■Alternatively, ensure that the neutral conductor is of sufficient capacity to handle a return
current equal to the sum total of the current in the three phases.
The carton
contains
Environmental
& Cooling
Voltage
Selection
AC Wiring
Mains Power
Supply
Three Phase
Systems

All inputs on the amplifier are electronically balanced and can accept signals from balanced and
unbalanced sources.
■A750 / A1000 / A1500 / A2000 / A2500 / A3000 / A5000 / A6000 / Q900 amplifiers have male
and female XLR connectors on the input of each channel. These connectors are wired in parallel.
■Q6 amplifiers have one female XLR connector on the input of each channel.
Nota Bene:
●The amplifiers are not mixing amplifiers - do not directly connect any channel to more than one
signal source.
●Maintain the same phase polarity on all equipment in the signal chain.
PIN 1 GROUND, connects directly to chassis
PIN 2 HOT (+)
PIN 3 COLD ( - )
■Fit XLR connectors at both ends of the cable.
■PIN 1 connects via the cable braid (screen). Always connect the screen at both ends of the
cable.
■PINS 2 & 3 connect via the two signal wires of the cable.
■At the source end of the cable, the cable screen and cold (-) signal wire connect to the chassis
of the source equipment via the sleeve of the jack plug / phono connector or PIN 1 of the
XLR-type plug.
■The signal carrying conductor, which connects to PIN 2 of the XLR plug at the amplifier end,
connects to the hot output terminal of the source equipment via the tip of the jack plug, the pin
of the phono connector or whichever XLR PIN carries the signal.
Connection is made to the amplifier’s load via Neutrik Speakon sockets. As with input connectors,
maintain phase polarity throughout the system.
■A750 / A1000 / A1500 / A2000 / A3000 / Q900: 2 parallel-connected Speakon sockets per
channel, wired as follows:
1+ = HOT 2+ = NO CONNECTION
1 - = COLD 2 - = GROUND
■A2500 / A5000 / A6000: 2 parallel connected Speakon sockets per channel, wired as follows:
1+ = HOT 2+ = NO CONNECTION
1 - = COLD (NOT GROUND) 2 - = COLD (NOT GROUND)
●The A2500 / A5000 / A6000 outputs are permanently connected in bridge mode.
Both hot and cold outputs carry high level signal. Further bridging is impossible.
●Do not connect any part of the A2500 /A5000/ A6000 outputs to ground.
●Take care when using loudspeaker controllers or processors.
Installation
INSTALLATION
4
Input
Connections
Pin Wiring - male
and female XLR
input sockets
Connection to
Balanced Sources
Connection to
unbalanced sources
Output
Connections
Speakon Socket
Wiring
▲Warning:

Installation
■Q6: 2 pairs of parallel connected Speakon sockets, each pair carrying the output of 2 channels,
wired as follows:
CHANNEL A: 1+ = HOT (OUTPUT) 1- = GROUND
CHANNEL B: 2+ = HOT (OUTPUT) 2- = GROUND
CHANNEL C: 1+ = HOT (OUTPUT) 1- = GROUND
CHANNEL D: 2+ = HOT (OUTPUT) 2- = GROUND
High voltages may be present at output terminals during operation and for a period
afterwards
Do not connect the amplifier output to any other amplifier output or to any other
quipment except a loudspeaker system.
Suggested speaker ratings, per amplifier channel:
Model 16Ω8Ω4Ω2Ω
A750 175W 325W 550W -
A1000 / Q6 250W 400W 800W -
A1500 600W 1200W 2000W -
A2000 250W 400W 800W 1600W
A2500 600W 1200W 2000W 3500W
A3000 350W 650W 1200W 2100W
A5000 600W 1200W 2000W 3500W
A6000 800W 1600W 2650W 4000W
Q900 350W 650W 1200W 2100W
A2500 / A5000 / A6000 amplifiers incorporate an adjustable output limiting control, concealed
behind the front panel. Consult an authorised Chevin dealer if you wish to make use of this
feature.
Correct total loading for the amplifiers is as follows. Multiple speakers are connected in parallel:
A750 / A1000 / A1500 / Q6 (per channel):
4 or less speakers of 16Ω
OR 2 or less speakers of 8Ω
OR 1 speaker of 4Ω
Do not use a system with a total impedance per channel of under 4Ω
A2000 / A2500 / A3000 / A5000 / A6000 / Q900 (per channel):
8 or less speakers of 16Ω
OR 4 or less speakers of 8 Ω
OR 2 or less speakers of 4Ω
OR 1 speaker of 2Ω
Do not use a system with a total impedance per channel of under 2Ω
Installation
5
Loudspeaker
Power Ratings
Pre-Set
Limiter -
A2500/A5000/
A6000
Loudspeaker
Impedance
Speakon Socket
Wiring, continued
▲Warning:
▲Warning:
▲Warning:
▲Warning:

Mono bridge mode
■Bring the input signal into Channel A as usual.
■Make a link cable with XLR plugs at both ends to go from Channel A LINK socket to Channel
B INPUT socket.
■Pin connections in this lead are as follows:
● Pin 2 at one end connects to Pin 3 at the other end- i.e., Pin 2-3 and Pin 3-2.
Re the Q900: repeat the above procedure to bridge Channels C & D.
■Split the speaker cable by separating the two conductors for a distance of 200mm along the
cable.
■Connect the red conductor to Terminal 1+ of the Channel A Speakon connector.
■Connect the black conductor to Terminal 1+ of the Channel B Speakon connector.
Re the Q900: repeat the above procedure to bridge Channels C & D.
▲Warning: Do not make connections to any other terminals.
■Set both Channels’Gain Controls in the same position, preferably at maximum, and control the
gain from elsewhere in the system. This ensures the load is shared equally between channels.
■A750: one (1) load of 8 ohms minimum. Power output is 850 watts.
■A1000: one (1) load of 8 ohms minimum. Power output is 1200 watts.
■A1500: one (1) load of 8 ohms minimum. Power output is 3000 watts.
■A2000: one (1) load of 4 ohms minimum. Power output is 2400 watts.
■A3000: one (1) load of 4 ohms minimum. Power output is 3000 watts.
■Q900: one (1) load of 4 ohms minimum by Channels A&B combined.
one (1) load of 4 ohms minimum by Channels C&D combined.
Output power is 3000 watts per channel pair.
■First, construct a lead with a connector at the source end to suit the source equipment and two
(2) XLR plugs at the amplifier end.
Wiring is as follows:
■The HOT output from the source equipment goes to Pin 2 of the Channel A (Channel C) XLR
plug and Pin 3 of the Channel B (Channel D) XLR plug.
■The COLD connection from the source equipment must go to Pin 3 of the Channel A
(Channel C) XLR plug and to Pin 2 of the Channel B (Channel D) XLR plug.
■The cable screen connects to Pin 1 of the XLR plugs in both cases.
■Connect the red conductor of the speaker cable to Terminal 1+ of the Channel A (Channel C)
Speakon connector.
■Connect the black conductor of the speaker cable to Terminal 2+ of the Channel B (Channel
D) Speakon connector.
▲Warning Do not make connections to Terminals 1- or 2- .
■Set all Channels’Gain Controls in the same position, preferably at maximum, and control the
gain from elsewhere in the system. This ensures the load is shared equally between channels.
■Q6: One (1) load of 8 ohms minimum by Channels A&B combined.
One (1) load of 8 ohms minimum by Channels C&D combined.
Output Power on the Q6 is 1200 watts per channel pair.
Mono bridge mode
6
▲Warning: Please note you cannot bridge an A2500, A5000 or A6000 amplifier.
A750/A1000/
A1500/A2000/
A3000/Q900
Input Connections
Output
Connections
Operation
Loading & Power
Output
Q6
Input Connections
Output
Connections
Operation
Loading & Power
Output

Maintenance/Servicing
Operation
1. Connect the unit to the mains supply and switch on. The Green Power LEDs illuminate. The
fans may run, depending on the temperature.
2. Apply a signal to the unit. The Green Signal LED(s) illuminate.
3. The Red Clip LED(s) illuminate if overdriving is imminent.
1. Turn down the gain controls to the minimum position
2. Switch off the unit using the power switch on the front panel.
3. Disconnect the unit from the power supply.
■Mains Power Supply Failure. When power is restored, the unit AutoMutes for ten seconds.
Do not increase gain settings during this period.
■Shorted Output. The unit can operate indefinitely into a shorted output. A circuit operates
instantaneously to protect the amplifier. Upon removal of the short circuit, normal operation
resumes.
■Low Load Impedance. Protection is immediate.
■Clipping. The affected channel’s red Clip LED illuminates shortly before clipping. A further
increase in signal level will result in clipping and activation of the soft-clip circuit.
■DC or Very Low Frequency signal at output. A self-resetting circuit activates to protect
the load.
■RF at output. A circuit activates to protect speakers from HF burnout.
■Cooling systems. The internal fans react to both signal level and temperature inside the unit.
Under conditions of high ambient temperature, the fan speed will increase even in the absence
of signal.
Keep Sound Levels Down! High levels of sound can damage hearing.
Operation Maintemance/Servicing Damage
7
All servicing and internal maintenance must be referred to an authorised Chevin dealer.
■Do not remove any covers or touch any internal parts.
■Do not allow any objects, e.g., screwdrivers or cable ends to enter the unit.
■Water. If the unit or any other electrical equipment in the system becomes wet during
operation, immediately disconnect the power at source. Do not touch the amplifier.
Consult a qualified engineer.
■Mechanical. If there are any signs of mechanical damage - for example, broken parts,
covers or fan guards pushed in, loose internal parts, mains cable damage etc. -
disconnect the amplifier from the mains and consult a qualified engineer
Chevin Research Ltd. accepts no responsibility or liability relating to
injury or damages suffered as a result of misuse or unauthorised
tampering with any of its amplifiers.
Damage
Power Up
Power Down
Protection
Systems
Sound levels
▲Warning:
▲Warning:
▲Warning

A750/A1000/A1500/A2000/A3000
1 Power Switch.
This controls the mains power supply to the
amplifier.
2 Output Controls.
These control the output level or gain of each
channel.
3 Power LEDs.
The top green LEDs. 2 per channel. They illuminate
when the unit is ON.
4 Clip LEDs.
These are the red LEDs, one per channel. They
illuminate when the unit is being driven into clip
and indicate the SoftClip system is active.
5 Signal LEDs.
The bottom green LEDs, one per channel.
They illuminate when signal is present.
A750/A1000/1500/12000/A3000
8
1 Variable Speed Fans.
The fans run when the amplifier is switched on.
They spin at variable speeds depending on the level
of signal and ambient temperature.
2 Mains Input.
Mains input is via a fixed, high current 3-core mains
cable. Wiring is as per standard European colour
coding.
3 Mains Fuse.
Correct fuse rating indicated on the back panel
legend.
4 Output Connectors.
Two Neutrik Speakon sockets per channel.
5 Input Connectors.
One male and one female XLR connector per
channel, wired in parallel with each other.
They may be used in balanced or unbalanced mode.
Pin wiring indicated on the legend.
FRONT PANEL
BACK PANEL
0
1
3
6
10
20
INF
ATTENTUATION db
POWER
CLIP
SIGNAL
CHANNEL BCHANNEL A
0
1
3
6
10
20
INF
ATTENTUATION db
A2000 LINEAR AMPLIFIER
MADE IN ENGLAND BY
CHEVIN RESEARCH LTD
OTLEY LS21 1AJ
LINEAR AUDIO
POWER AMPLIFIER
MODEL: A
CHANNEL B
OUTPUTINPUT LINK
CONNECTION WIRING
2 HOT 3 COLD 1GND CONNECTION WIRING 2 HOT 3 COLD 1GND
CONNECTION WIRING
1+ HOT 1- COLD
CONNECTION WIRING
1+ HOT 1- COLD
OUTPUT
FUSE
INPUT LINKOUTPUT OUTPUT
FUSE RATING
110-120V - 40A INTERNAL
220-240V - 16A
PLEASE SEE MANUAL
DANGER OF ELECTRIC SHOCK
WHEN COVERS REMOVED
8N:
CHANNEL A
5
2
2
43
1
4
1 5 2
3

1 Variable Speed Fans.
The fans run when the unit is ON. They spin at
variable speeds depending on the level of signal and
ambient temperature.
2 Mains Input.
Mains input is via a fixed, high current 3-core mains
cable. Wiring is as per standard European colour
coding.
3 Mains Fuse.
Correct fuse rating is indicated on the back panel
legend.
4 Output Connectors.
Q6 amplifiers have two pairs of parallel-connected
Neutrik Speakon sockets on the outputs, each pair
carrying the output of two channels.
5 Input Connectors.
Q6 amplifiers have one female XLR connector per
channel, which may be used in balanced or
unbalanced mode. Pin wiring as indicated on the
legend.
Q6
1 Power Switch.
This controls the mains power supply.
2 Output Controls.
These control the output levels or gain of each
channel.
3 Power LEDs.
The top green LEDS, 2 per channel. They illuminate
when the unit is ON.
4 Clip LEDs.
The red LEDs, one per channel. They illuminate
when the amplifier is being driven into clip and
indicate that SoftClip system is active.
5 Signal LEDs.
The bottom green LEDs, one per channel. They
illuminate when signal is present.
Q6
9
FRONT PANEL
BACK PANEL
0
1
3
6
10
20
INF
ATTENTUATION db
0
1
3
6
10
20
INF
ATTENTUATION db
POWER
CLIP
SIGNAL
CHANNEL BCHANNEL A
0
1
3
6
10
20
INF
ATTENTUATION db
0
1
3
6
10
20
INF
ATTENTUATION db
POWER
CLIP
SIGNAL
CHANNEL BCHANNEL A Q - 6
MADE IN ENGLAND BY
CHEVIN RESEARCH LTD
OTLEY LS21 1AJ
LINEAR AUDIO
POWER AMPLIFIER
MODEL: Q6
CHANNEL C + D
OUTPUTINPUT D INPUT C
CONNECTION WIRING
2 HOT 3 COLD 1GND CONNECTION WIRING
CH. C1+ HOT 1- COLD
CH. C1+ HOT 1- COLD
OUTPUT
FUSE
INPUT AINPUT B
CONNECTION WIRING
1+ HOT 1- COLD
OUTPUT
CONNECTION WIRING
CH. C1+ HOT 1- COLD
CH. C1+ HOT 1- COLD
OUTPUT
FUSE RATING
110-120V - 40A INTERNAL
220-240V - 16A
PLEASE SEE MANUAL
DANGER OF ELECTRIC SHOCK
WHEN COVERS REMOVED
8N:
CHANNEL A + B
2
4 5
3
1 4
5 3
2
1

A2500
1 Power Switch.
This controls the mains power supply.
2 Output Control.
This controls the output level or gain.
3 Output Bargraph.
■Power LED: The bottom green LED. It
illuminates when the unit is ON.
■Output Voltage LEDs: The column of green LEDs
above the Power LED.These give an indication of
output voltage. Output power will be determined
by load impedance. Illumination of the 70V LED
indicates imminent clipping.
■Clip LED: The top red LED. It illuminates when
the amplifier is being driven into clip and indicates
that the SoftClip system is active. If the Clip
threshold is exceeded, the intensity of this LED
provides an indication of the degree of overdrive.
A2500
10
1 Variable Speed Fans.
The fans run when the amplifier is switched on.
They spin at variable speeds depending
on the level of signal and ambient temperature.
2 Mains Input.
Mains input is via a fixed, high current 3-core mains
cable. Wiring is as per standard European colour
coding.
3 Mains Fuse.
Correct fuse rating indicated on the back panel
legend.
4 Output Connectors.
Two Neutrik Speakon sockets.
5 Input Connectors.
One male and one female XLR connector, wired in
parallel with each other. They may be used in
balanced or unbalanced mode. Pin wiring indicated
on the legend.
FRONT PANEL
BACK PANEL
GAIN
70
60
50
40
30
20
10
POWER ON
LIMITER
A 2500
MONOBLOCK
RMS
OUTPUT
VOLTS
INPUT SPEAKER
OUTPUTINPUT LINK
CONNECTION WIRING
2 HOT 3 COLD 1GND CONNECTION WIRING 1+ HOT 1- COLD
MADI IN ENGLAND BY
CHEVIN RESEARCH LTD
OTLEY LS21 1AJ
OUTPUT
FUSE
FUSE RATING
110-120V - 40A INTERNAL
220-240V - 16A
PLEASE SEE MANUAL
LINEAR AUDIO
POWER AMPLIFIER
MODEL: A2500 MONO BLOCK
DANGER
OF ELECTRIC SHOCK
WHEN COVERS REMOVED
LOAD 2 OHMS MINIMUM 8N:
123
1 2
3 45

1 Variable Speed Fans.
The fans run when the amplifier is switched on.
They spin at variable speeds depending on
the level of signal and ambient temperature.
2 Mains Input.
Mains input is via a fixed, high current 3-core mains
cable, one per channel. Wiring is as per standard
European colour coding.
3 Mains Fuse.
One per channel. Correct fuse rating indicated on the
back panel legend.
4 Output Connectors.
Two Neutrik Speakon sockets per channel.
5 Input Connectors.
One male and one female XLR connector per
channel, wired in parallel with each other.
They may be used in balanced or unbalanced mode.
Pin wiring indicated on the legend.
A5000/A6000
1 Power Switches.
These control the mains power supply. (1 per
channel).
2 Output Controls.
These control the output level or gain.
3 Output Bargraph.
■Power LED: The bottom green LEDs. Illuminates
when the unit is ON.
■Output Voltage LEDs: The column of green LEDs
above the Power LEDs.These give an indication
of output voltage. Output power will be
determined by load impedance. llumination of the
70V LED indicates imminent clipping.
■Clip LED: The top red LEDs. It illuminates when
the amplifier is being driven into clip and
indicates that the SoftClip system is active. If the
Clip threshold is exceeded, the intensity of this
LED provides an indication of the degree of
overdrive.
A5000/A6000
11
FRONT PANEL
BACK PANEL
CHANNEL A
0
1
3
6
10
20
INF
CHANNEL B
0
1
3
6
10
20
INF
A5000
LINEAR
POWER
AMPLIFIER
70
60
50
40
30
20
10
LIMITER
RMS
OUTPUT
VOLTS
POWER ON
70
60
50
40
30
20
10
LIMITER
RMS
OUTPUT
VOLTS
POWER ON
CHANNEL A OUTPUTCHANNEL A INPUT
OUTPUTINPUT LINK
CONNECTION WIRING
2 HOT 3 COLD 1GND CONNECTION WIRING
1+ HOT 1- COLD
MADE IN ENGLAND BY
CHEVIN RESEARCH LTD
OTLEY LS21 1AJ
OUTPUT
FUSE
FUSE RATING
110-120V - 40A INTERNAL
220-240V - 16A
PLEASE SEE MANUAL DANGER
OF ELECTRIC SHOCK
WHEN COVERS REMOVED
LOAD 2 OHMS MINIMUM
WARNING
THE 2 CHANNELS OF THIS
AMPLIFIER MUST NOT BE BRIDGED
CHANNEL B OUTPUTCHANNEL B INPUT
OUTPUTINPUT LINK
CONNECTION WIRING
2 HOT 3 COLD 1GND CONNECTION WIRING
1+ HOT 1- COLD
OUTPUT
FUSE
FUSE RATING
110-120V - 40A INTERNAL
220-240V - 16A
PLEASE SEE MANUAL
LINEAR AUDIO
POWER AMPLIFIER
MODEL: A5000
DANGER
OF ELECTRIC SHOCK
WHEN COVERS REMOVED
LOAD 2 OHMS MINIMUM 8N:
2
1
1 25 3 4
3

Q900
1 Power Switch.
One per channel pair. Controls the mains power
supply.
2 Output Control.
One per channel. Controls the output level or gain.
3 Power LEDs.
The top green LEDs, two per channel. They
illuminate when the unit is ON.
4 Clip LEDs.
These are the red LEDs, one per channel. They
illuminate when the unit is being driven into clip
and indicate the SoftClip system is active.
5 Signal LEDs.
The bottom green LEDs, one per channel. They
illuminate when signal is present.
Q900
12
1 Variable Speed Fans.
The fans run when the amplifier is switched on.
They spin at variable speeds depending on the level
of signal and ambient temperature.
2 Mains Input.
One per channel pair. Mains input is via a fixed, high
current 3-core mains cable. Wiring is as per
standard European colour coding.
3 Mains Fuse
One per channel pair. Correct fuse rating indicated
on the back panel legend.
4 Output Connectors.
Two Neutrik Speakon sockets per channel
5 Input Connectors.
One male and one female XLR connector per
channel, wired in parallel with each other. They may
be used in balanced or unbalanced mode. Pin wiring
indicated on the legend.
FRONT PANEL
BACK PANEL
CHANNEL A
0
1
3
6
10
20
INF
CHANNEL B
0
1
3
6
10
20
INF
CHANNEL A
0
1
3
6
10
20
INF
CHANNEL B
0
1
3
6
10
20
INF
Q900
POWER
CLIP
SIGNAL
POWER
CLIP
SIGNAL
CHANNEL B
OUTPUTINPUT LINK
CONNECTION WIRING
2 HOT 3 COLD 1GND CONNECTION WIRING
1+ HOT 1- COLD
MADE IN ENGLAND BY
CHEVIN RESEARCH LTD
OTLEY LS21 1AJ
LINEAR AUDIO
POWER AMPLIFIER
MODEL: Q900
OUTPUT
FUSE
INPUTLINK
CONNECTION WIRING
2 HOT 3 COLD 1GND
OUTPUT
CONNECTION WIRING
1+ HOT 1- COLD
OUTPUT
FUSE RATING
110-120V - 40A INTERNAL
220-240V - 16A
PLEASE SEE MANUAL
DANGER OF ELECTRIC SHOCK
WHEN COVERS REMOVED
8N:
CHANNEL A
CHANNEL D
OUTPUTINPUT LINK
CONNECTION WIRING
2 HOT 3 COLD 1GND CONNECTION WIRING
1+ HOT 1- COLD
OUTPUT
FUSE
INPUTLINK
CONNECTION WIRING
2 HOT 3 COLD 1GND
OUTPUT
CONNECTION WIRING
1+ HOT 1- COLD
OUTPUT
FUSE RATING
110-120V - 40A INTERNAL
220-240V - 16A
PLEASE SEE MANUAL
DANGER OF ELECTRIC SHOCK
WHEN COVERS REMOVED
8N:
CHANNEL C
1
2
2 3451
345

The Chevin Warranty
The Chevin Warranty
13
This precision engineered CHEVIN product is guaranteed against defects due to faulty
materials and workmanship for a period of 24 months from the date of original purchase,
subject to the following restrictions.
■This warranty is only valid in the country of purchase.
■The equipment has not been abused or operated in conjunction with unsuitable or
faulty apparatus.
■The equipment has not been disassembled, modified or tampered with by any person
other than our CHEVIN staff or overseas by our own or distributors’staff.
■The equipment has not suffered damage in transit.
Should service be required, notify the dealer from whom you purchased the equipment to
arrange for an authorised CHEVIN agent to confirm the need for attention.
■Do not despatch the goods without the prior approval of CHEVIN or its authorised
agents. If asked to return the goods, pack carefully (preferably in the original cartons)
and return pre-paid. Insurance is recommended as goods are returned at owner’s risk.
■Packing, insurance and freight on the return journey will be paid by CHEVIN or its
authorised agents only if warranty work proves necessary. If warranty work proves
unnecessary, goods will be released upon payment by the owner for charges for non-
warranty repair work and return packing, insurance and freight.
The warranty card should be completed and returned to CHEVIN RESEARCH LTD.
Failure to register in no way limits or invalidates the Warranty, but in the event service is
required, delay may result since Warranty work cannot begin until the original sale has
been verified.
In case of difficulty, contact CHEVIN RESEARCH LTD.
This Warranty in no way affects your statutory rights.

General specification
General specification
14
Specifications A500 A700v A750 A1000 A1500
RMS Power Output 10Hz-20kHz 2 channels 1 channel 2 channels 2 channels 2 channels
Line operation - 70 volt - - -
8 ohms per channel 200 watts 600 watts 250 watts 350 watts 800 watts
4 ohms per channel 350 watts - 425 watts 600 watts 1500 watts
2ohmsperchannel -----
Power bandwidth +OdB, -3dB 2Hz - 40kHz 2Hz - 40kHz 2Hz - 80kHz 2Hz - 80kHz 2Hz - 80kHz
Total Harmonic Distortion
Typical @ 1dB below clip 0.06% 0.06% 0.04% 0.04% 0.04%
20kHz @ 1dB below clip 0.08% 0.08% 0.07% 0.07% 0.07%
Signal to Noise Ratio
Typical ref. full output, unweighted -120dB -120dB -125dB -125dB -125dB
Worst case 10Hz - 30kHz -95dB -95dB -95dB -95dB -95dB
Crosstalk
Typical -110dB N/A -115dB -115dB -115dB
Worst case 10Hz - 30kHz -95dB N/A -95dB -95dB -95dB
Slew Rate in excess of 40V/µs 40V/µs 75V/µs 75V/µs 60V/µs
Damping Factor 400 400 400 400 400
Input Impedance
Electronically balanced 10k Ohm 10k Ohm 10k Ohm 10k Ohm 10k Ohm
Common Mode Rejection typically -70dB -70dB -70dB -70dB -70dB
Input Sensitivity
Ref. full output into 4 ohms 1V RMS 1V RMS 1V RMS 1V RMS 1V RMS
Gain x37.5 x70 x40 x50 x80
Protection
Clipping Soft Soft Soft Soft Soft
Load below 2.4 ohms Dynamic linear Dynamic linear Dynamic linear Dynamic linear Dynamic linear
Load below 1.2 ohms -----
Shorted Output Immediate Immediate Immediate Immediate Immediate
DC at Output Immediate Immediate Immediate Immediate Immediate
RF at Output Immediate Immediate Immediate Immediate Immediate
Power Consumption 1.2kVA 1.2kVA 1.5kVA 2kVA 4kVA
Power Requirements: 50/60Hz AC 220-240 volts 220-240 volts 220-240 volts 220-240 volts 220-240 volts
Internally selectable for 100-120 volts 100-120 volts 100-120 volts 100-120 volts 100-120 volts
Dimensions
Height 1.75” 44mm 1u 1.75” 44mm 1u 3.5” 88mm 2u 3.5” 88mm 2u 3.5” 88mm 2u
Width 19” 483mm 19” 483mm 19” 483mm 19” 483mm 19” 483mm
Depth 8.5” 215mm 8.5” 215mm 15” 381mm 15” 381mm 15” 381mm
Weight 4kg (9lbs) 4kg (9lbs) 8.5kg (19lbs) 8.5kg (19lbs) 12kg (27lbs)

General specification
15
A2000 A2500 A3000 A5000 A6000 Q6 Q900
2 channels 1 channel 2 channels 2 channels 2 channels 4 channels 4 channels
-- -----
375 watts 900 watts 500 watts 900 watts 1200 watts 350 watts 500 watts
750 watts 1500 watts 900 watts 1500 watts 2000 watts 600 watts 900 watts
1200 watts 2500 watts 1600 watts 2500 watts 3000 watts - 1600 watts
2Hz - 80kHz 2Hz - 50kHz 2Hz - 80kHz 2Hz - 50kHz 2Hz - 80kHz 2Hz - 80kHz 2Hz - 80kHz
0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04%
0.07% 0.07% 0.07% 0.07% 0.07% 0.07% 0.07%
-125dB -125dB -125dB -125dB -125dB -125dB -125dB
-95dB -95dB -95dB -95dB -95dB -95dB -95dB
-115dB N/A -115dB -115dB -115dB -115dB -115dB
-95dB N/A -95dB -95dB -95dB -95dB -95dB
75V/µs 50V/µs 50V/µs 50V/µs 50V/µs 75V/µs 50V/µs
400 400 400 400 400 400 400
10k Ohm 10k Ohm 10k Ohm 10k Ohm 10k Ohm 10k Ohm 10k Ohm
-70dB -70dB -70dB -70dB -70dB -70dB -70dB
1V RMS 1V RMS 1V RMS 1V RMS 1V RMS 1V RMS 1V RMS
x50 x70 x60 x70 x90 x50 x60
Soft Soft Soft Soft Soft Soft Soft
- - - - - Dynamic linear -
Dynamic linear Dynamic linear Dynamic linear Dynamic linear Dynamic linear - Dynamic linear
Immediate Immediate Immediate Immediate Immediate Immediate Immediate
Immediate Immediate Immediate Immediate Immediate Immediate Immediate
Immediate Immediate Immediate Immediate Immediate Immediate Immediate
4kVA 4kVA 4.5kVA 4kVA per channel 4.5kVA per channel 4kVA 4.5kVA per pair
220-240 volts 220-240 volts 220-240 volts 220-240 volts 220-240 volts 220-240 volts 220-240 volts
100-120 volts 100-120 volts 100-120 volts 100-120 volts 100-120 volts 100-120 volts 100-120 volts
3.5”88mm 2u 3.5”88mm 2u 3.5”88mm 2u 7”178mm 4u 7”178mm 4u 3.5”88mm 2u 7”178mm 4u
19”483mm 19”483mm 19”483mm 19”483mm 19”483mm 19”483mm 19”483mm
15”381mm 15”381mm 15”381mm 15”381mm 15”381mm 15”381mm 15”381mm
12kg (27lbs) 12kg (27lbs) 12kg (27lbs) 25kg (55lbs) 25kg (55lbs) 12kg (27lbs) 25kg (55lbs)
Product design and specifications may change without prior notice

Contents
2
A Series Amplifiers
A Series Amplifiers
Chevin Research Ltd.,
Otley Mills, Otley,
W. Yorks LS21 3JP ENGLAND
Tel: [phone]
Fax: [phone]
www: chevin-research.com
Trademark acknowledgements:
Speakon is a registered trademark of
Neutrik AG
XLR is a registered trademark of
ITT Cannon UK Ltd.
This manual is intended for
informational purposes only.
All information included herein is
subject to change without notice.
Chevin Research Ltd. shall not be
held responsible for any damages,
direct or indirect, arising from or
related to use of this manual.