Chevin Research A500 User manual
Installation.................................................. 2
Box contents, positioning & power................ 2
Inputs ........................................................... 3
Outputs ........................................................ 4
Speaker power ratings .................................. 5
Speaker impedances ..................................... 5
Mono bridge mode....................................... 6
Bridge input & output wiring ........................ 6
Operation ................................................... 7
Protection systems ........................................ 7
Servicing ....................................................... 7
Front & rear panels ....................................... 8
Specications.............................................. 14
Warranty & mono bridge loadings .............. 16
CONTENTS
USER MANUAL
for
PROFESSIONAL POWER AMPLIFIERS:
A500 • A700v • A750 • A1000 • A1004 • A1500 • A2000 • A3000 • A4000
A5000 • A5003 • A6000 • Q6 • Q900 • Q1004 • QB1000/600 • Line250 • Line500
2
3
Installation
Box contents
In addition to your amplier and this manual, the carton should contain the following items:
• Neutrik® Speakon® plugs, depending on your amplier model:
• Line250, Line500 no Speakon plugs
• A700v: one Speakon plug
• Q6, Q1004, QB1000/600, Q900: four Speakon plugs
• All other models: two Speakon plugs
• A500 and A700v only. Detachable power cable with IEC connector.
• Warranty card. Please complete this card and return it to Chevin Research. Failure to
register may result in delays if you require warranty service. See rear cover for warranty.
Positioning
• Your amplier must have good ventilation. Air is drawn in at the rear panel and is expelled
at the front. It is vital to keep front and rear of unit free from obstruction.
• Your amplier may be used free-standing or installed in a 19” rack. If installed in a rack,
the rear of the chassis should be supported. Rear rack-mount supports are integral on all
models except the A500 & A700v.
Power
Wiring
• EARTHING: All Chevin ampliers must be earthed.
• A500 & A700v models connect to the mains supply via a supplied detachable power cable.
• All other models have xed power cables, colour coded to European standards:
Green/Yellow = Earth Blue=Neutral Brown= Live
• The A5000, A6000 and Q900 have 2 power cables.
• The live connector in certain 115V models is coloured RED.
• The amplier must be connected to a 3-pin grounded outlet via a 3-pin connector of
sufcient voltage and current rating. If the connector has provision for a fuse, a suitable
fuse must be tted.
Mains supply
• The power rating of the supply should be at least twice the total audio output of the system.
• VOLTAGE SELECTION: Your amplier is factory set to your local supply voltage and should
be changed only by an authorised Chevin dealer.
• ELECTRIC SHOCK/FIRE HAZARD: The unit must be connected to an adequately rated
grounded outlet. All related cables, connectors and switch gear must be sufciently rated
to avoid risk of overheating and re.
2
3
Power (continued)
Three phase systems
• IMPORTANT: 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 the neutral conductor is of sufcient capacity to handle a return
current equal to the sum total of the current in the three phases.
Inputs
• XLR connectors are used on all amplier inputs except for Line250 and Line500 models.
• Do not directly connect any channel to more than one signal source, these are not mixing
ampliers.
• All inputs are electronically balanced and can accept signals from balanced and unbalanced
sources. Maintain the same phase polarity on all equipment in the signal chain.
Inputs from balanced sources
Use shielded cable with XLR connectors at both ends (except Line250 and Line500):
• Ground/screen: Connect cable braid to XLR pin 1.
• HOT (+) signal: XLR pin 2
• COLD (–) signal: XLR pin 3
Inputs from unbalanced sources
Use shielded cable with an XLR connector at the amplier end (except Line250 and Line500)
and either a jack plug, phono plug or XLR connector, as appropriate:
• Ground/screen and COLD (–): At the source end, connect the COLD signal wire and cable
braid to the sleeve of jack plug or phono connector, or pin 1 of an XLR connector (if used).
• At the source end of the cable, connect the HOT (+) signal to the tip of the jack plug, the
pin of the phono plug or pin 2 of an XLR connector (if used).
• Connect the XLR at the amplier end as per ‘Inputs from balanced sources’ above.
Inputs to Line250 and Line500 models
The Line250 and Line500 models use block connectors at the rear panel. Use connections at
the source end as explained above for balanced or unbalanced sources. At the amplier end,
make wire connections rather than using an XLR connector.
Mono bridging
Various models can have their channels bridged together (except A700v, A5000, A6000,
QB1000/600, Line250 or Line500). For details about the necessary wiring, see page 6.
Speakon is a registered trademark of Neutrik AG
XLR is a registered trademark of ITT Cannon Ltd.
4
5
Outputs
Connections are made to the amplier load using Neutrik Speakon sockets (except for Line250
and Line500 models). As with input connectors, maintain phase polarity throughout the system.
IMPORTANT: High voltages are present at output terminals during operation and for
a period afterwards. Do not connect the amplier to any other amplier output or to
any equipment other than a speaker system.
Take great care to note the wiring specications particular to your amplier model:
A700v
One Speakon socket per channel, wired as follows:
1+ = HOT 2+ = NO CONNECTION
1– = COLD (not Ground) 2– = NO CONNECTION
WARNING: The A700v output is permanently connected in bridge mode. Both hot and cold
outputs carry high level signal. Further bridging is impossible. No terminal of the speaker
socket is connected to ground. Do not connect any part of the speaker system to ground.
A500 • A750 • A1000 • A1004 • A1500 • A2000 • A3000 • A4000 • A5003 • Q900
Two parallel-connected Speakon sockets (A500: one socket) per channel, wired as follows:
1+ = HOT 2+ = NO CONNECTION
1– = GROUND 2– = GROUND
A5000 • A6000
Two parallel-connected Speakon sockets per channel, wired as follows:
1+ = HOT 2+ = NO CONNECTION
1– = COLD (not Ground) 2– = COLD (not Ground)
WARNING: The 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
A5000 or A6000 outputs to ground. Take care when using loudspeaker controllers or processors.
Q6 • Q1004
One Speakon socket per channel, parallel connected in channel pairs: A & B, C & D.
Each socket in the pair carries the output of both channels, wired as follows:
Channel A & B sockets:
1+ = HOT A 2+ = HOT B
1– = GROUND 2– = GROUND
Channel C & D sockets:
1+ = HOT C 2+ = HOT D
1– = GROUND 2– = GROUND
QB1000/600
One Speakon socket per channel, parallel connected in pairs: A & B, C & D.
Each socket in the pair carries the output of both channels, wired as follows:
Channel A & B sockets:
1+ = HOT B 1000W 2+ = HOT A 600W
1– = GROUND 2– = GROUND
Channel C & D sockets:
1+ = HOT C 1000W 2+ = HOT D 600W
1– = GROUND 2– = GROUND
Line250 • Line500
Connect load to output connector blocks using the 0v terminal and either the 70v or 100v
HOT terminals, as appropriate to the system.
4
5
Speaker power ratings
Suggested speaker ratings per amplier channel, in watts.
Model 16Ω 8Ω 4Ω 2Ω
A500 115 230 460 –
A700v 450 900 – –
A750 160 300 600 –
A1000 • Q6 230 450 900 –
A1004 • Q1004 400 750 1500 –
A1500 500 1000 1900 –
QB1000/600 A&D 230 450 900 –
B&C 400 750 1500 –
A2000 230 500 1000 1800
A3000 350 650 1300 2300
A4000 450 800 1500 3000
A5000 • A5003 500 1000 2000 3600
A6000 800 1200 2600 4500
Q900 350 650 1300 2300
Speaker impedances
Correct loadings for all models are shown here. Multiple speakers are connected in parallel.
A700v
WARNING: Do not use a system with a total impedance less than 8Ω.
The A700v can be used to drive a 70 volt distribution system (maximum loading 600W) or a
100 volt line system at a reduced output. Note: Do not connect a transformer between the
A700v output and distribution system. Where line transformers are used to match speakers to
the distribution system, adjust to suit the characteristics of the speaker.
A500 • A750 • A1000 • A1004 • A1500 • Q6 • Q1004 • QB1000/600 (per channel)
WARNING: Do not use a system with a total impedance per channel less than 4Ω.
4 or less OR 2 or less OR 1 speaker
speakers of 16Ω speakers of 8Ω of 4Ω
A2000 • A3000 • A4000 • A5000 • A5003 • A6000 • Q900 (per channel)
WARNING: Do not use a system with a total impedance per channel less than 2Ω.
8 or less OR 4 or less OR 2 or less OR 1 speaker
speakers of 16Ω speakers of 8Ω speakers of 4Ω of 2Ω
Note: The A5000 and A6000 models both incorporate an adjustable output limiting control,
concealed behind the front panel. Consult an authorised Chevin dealer to enable this feature.
6
7
Mono bridge mode
WARNING: You cannot bridge the A700v, A5000, A6000, QB1000/600, Line250 or Line500.
Inputs
A500
1 Make a lead from the source with two XLR plugs at the amplier end.
2 HOT output from the source goes to pin 2 of Channel A XLR and pin 3 of Channel B XLR.
3 COLD output from the source goes to pin 3 of Channel A XLR and pin 2 of Channel B XLR.
4 The cable screen goes to pin 1 of both XLR plugs.
Q6 • Q1004
1 Make two leads, one for each source channel. Each lead needs 2 XLR plugs at the amplier end.
2 In each lead, HOT output from the source goes to pin 2 of the rst XLR & pin 3 of the second XLR.
3 In each lead, COLD output from the source goes to pin 3 of rst XLR & pin 2 of second XLR.
4 The cable screen goes to pin 1 of both XLR plugs.
5 In each lead, rst XLR goes to INPUT A (INPUT C) and second XLR goes to INPUT B (INPUT D).
A750 • A1000 • A1004 • A1500 • A2000 • A3000 • A4000 • A5003 • Q900
1 Bring the input signal into channel A as usual.
2 Make a lead with an inline XLR socket to go to the Channel A LINK connector and an XLR plug
to go to the Channel B INPUT socket.
3 Connect socket pin 2 to plug pin 3 and similarly, socket pin 3 to plug pin 2.
Q900: Make a second lead as above for channels C & D.
Outputs
A500 • A750 • A1000 • A1004 • A1500 • A2000 • A3000 • A4000 • A5003 • Q900
1 Split the speaker cable by separating the two conductors for a distance of 20cm along
cable.
2 Connect the red conductor to terminal 1+ of the Channel A Speakon connector.
3 Connect the black connector to terminal 1+ of the Channel B Speakon connector.
Do not make connections to any other terminals. Q900: Repeat the above for channels C & D.
Q6 • Q1004
1 Connect the red conductor of the speaker cable to terminal 1+ of channel A (C) Speakon conn.
2 Connect the black conductor of the speaker cable to terminal 2+ of channel B (D) Speakon conn.
WARNING: Do not make connections to terminals 1– or 2–.
Operation
Set the gain controls of both channels 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.
Loading and power output
Please see the rear page for mono bridge loading and power output values.
6
7
Operation & Servicing
Switching on
1 Turn the gain controls to the minimum positions.
2 Connect the unit to a mains supply of sufcient power and click the front panel switch(es)
to the ON position. Depending on the internal temperature, the fans may run.
• The green Power indicators will illuminate.
• The red Clip indicators will illuminate if overdriving is imminent.
WARNING: Keep sound levels down. High levels of sound can damage hearing.
Switching off
• Turn the gain control(s) to the minimum position(s). Click the front panel switch(es) to the
OFF position and disconnect from the mains supply.
WARNING: High voltages are present at output terminals for a period after switching off.
Protection systems
• Mains power supply failure: When power is restored, the amp will AutoMute for ve seconds.
Do not increase gain settings during this period. Note: A500, A700v, Line250 and Line500
do not AutoMute.
• Shorted output: The unit can operate indenitely into a shorted output. Normal operation
will resume upon removal of the short circuit.
• Low load impedance: Protection is immediate.
• Clipping: The affected channel’s red Clip indicator will illuminate shortly before clipping.
A further increase in signal level will activate the SoftClip circuit.
• RF, DC or very low frequency signal at output: A self resetting circuit will activate to
protect the load.
• Cooling systems: The internal fans react to both high signal level and temperature inside
the unit. If the ambient temperature is high, fan speed will increase even in the absence of
a signal.
Servicing
WARNING: All servicing and internal maintenance must be referred to an authorised Chevin
dealer. Chevin Research accepts no responsibility or liability relating to injury or damages
suffered as a result of misuse or unauthorised tampering with ampliers.
• Do not remove any covers or touch any internal parts. Do not allow any objects (e.g.
screwdrivers, cable ends, etc.) to enter the unit.
• If the unit of any other electrical equipment in the system becomes wet during operation,
disconnect the power source immediately. Do not touch the amplier. Consult a qualied
engineer.
• If there are any signs of mechanical damage, disconnect the power source and consult a
qualied engineer.
8
9
CHANNEL B
CHANNEL A
LINEAR AMPLIFIER
POWER
CLIP
SIGNAL
POWER
A500
Power switchChannel A
gain
control
Channel B
gain
control
Power, Clip
and Signal
indicators
GAIN
LINEAR AMPLIFIER
POWER
CLIP
SIGNAL
POWER
A700v
Power switchGain
control
Power, Clip
and Signal
indicators
CHANNEL A CHANNEL CCHANNEL B CHANNEL D
POWER
ATTENUATION dB ATTENUATION dB
POWER POWER
CLIP CLIP
SIGNAL SIGNAL
INF INF
20 20
10 10
6 6
3 3
1 1
0 0
ATTENUATION dB ATTENUATION dB
INF INF
20 20
10 10
6 6
3 3
1 1
0 0
Q1004
600W 1000W
CHANNEL A
1000
QB
600
CHANNEL B
POWER
ATTENUATION dB
POWER
CLIP
SIGNAL
INF
20
10
6
3
1
0
ATTENUATION dB
INF
20
10
6
3
1
0
1000W 600W
CHANNEL C CHANNEL D
ATTENUATION dB
POWER
CLIP
SIGNAL
INF
20
10
6
3
1
0
ATTENUATION dB
INF
20
10
6
3
1
0
Power
switch
Channel A
gain
control
Power, Clip
and Signal
indicators
Channel B
gain
control
Channel C
gain
control
Power, Clip
and Signal
indicators
Channel D
gain
control
Power
switch
600W
(Channel A)
gain control
Power, Clip
and Signal
indicators
1000W
(Channel B)
gain control
Power, Clip
and Signal
indicators
1000W
(Channel C)
gain control
600W
(Channel D)
gain control
Q1004QB1000/600
A500 SEE PAGE 6 FOR OPERATION DETAILS • FRONT PANEL
A700v SEE PAGE 6 FOR OPERATION DETAILS • FRONT PANEL
Q1004 • QB1000/600 SEE PAGE 6 FOR OPERATION DETAILS • FRONT PANELS
8
9
Mains inputFuseChannel B
Input
connector
Channel B
Output
connector
SN:
FUSE
I
N
P
U
T
I
N
P
U
T
O
U
T
P
U
T
O
U
T
P
U
T
CHANNEL A
CONNECTOR WIRING
INPUT
2 HOT 3 COLD 1 GND
OUTPUT
1+HOT 1-COLD
MINIMUM LOAD 4 OHMS
CHANNEL B
CONNECTOR WIRING
INPUT
2 HOT 3 COLD 1 GND
OUTPUT
1+HOT 1-COLD
MINIMUM LOAD 4 OHMS
FUSE RATING
110-120V = 16A
220-240V = 7A
PLEASE SEE
MANUAL
MADE IN ENGLAND BY
CHEVIN RESEARCH LTD
OTLEY LS21 3LP
LINEAR AUDIO POWER
AMPLIFIER MODEL: A500
DANGER OF
ELECTRIC SHOCK
WHEN COVERS REMOVED
Channel A
Input
connector
Channel A
Output
connector
Mains input
FuseInput
connector
Output
connector
SN:
FUSE
I
N
P
U
T
O
U
T
P
U
T
CONNECTOR WIRING
INPUT
2 HOT 3 COLD 1 GND
OUTPUT
1+HOT 1-COLD
MINIMUM LOAD 4 OHMS
FUSE RATING
110-120V = 16A
220-240V = 7A
PLEASE SEE
MANUAL
MADE IN ENGLAND BY
CHEVIN RESEARCH LTD
OTLEY LS21 3LP
LINEAR AUDIO POWER
AMPLIFIER MODEL: A700v
DANGER OF
ELECTRIC SHOCK
WHEN COVERS REMOVED
CONNECTOR WIRING
2 HOT 3 COLD 1 GND
CONNECTOR WIRING
2 HOT 3 COLD 1 GND
CONNECTOR WIRING CONNECTOR WIRING
DANGER OF ELECTRIC SHOCK
WHEN COVERS REMOVED
LINEAR AUDIO
POWER AMPLIFIER
MODEL: QB1004
SN
INPUT D INPUT C INPUT B INPUT A
OUTPUTS OUTPUTSOUTPUTS OUTPUTS
CHANNEL C+D CHANNEL A+B
MADE IN ENGLAND BY
CHEVIN RESEARCH LTD
OTLEY LS21 3LP
FUSE RATING
220-240V = 40A
PLEASE SEE MANUAL
LOAD 4 OHMS MINIMUM
CH.D:1+ HOT 1- COLD
CH.C:2+ HOT 2- COLD
CH.A:1+ HOT 1- COLD
CH.B:2+ HOT 2- COLD
CONNECTOR WIRING
2 HOT 3 COLD 1 GND
CONNECTOR WIRING
2 HOT 3 COLD 1 GND
CONNECTOR WIRING CONNECTOR WIRING
DANGER OF ELECTRIC SHOCK
WHEN COVERS REMOVED
LINEAR AUDIO
POWER AMPLIFIER
MODEL: QB1000/600
SN
INPUT D INPUT C INPUT B INPUT A
OUTPUT C/D OUTPUT A/BOUTPUT C/D OUTPUT A/B
CHANNEL C+D CHANNEL A+B
MADE IN ENGLAND BY
CHEVIN RESEARCH LTD
OTLEY LS21 3LP
FUSE RATING
220-240V = 20A
110-120V = 40A
PLEASE SEE MANUAL
LOAD 4 OHMS MINIMUM
CH.D:2+ HOT 2- COLD (600W)
CH.C:1+ HOT 1- COLD (1000W)
CH.D:2+ HOT 2- COLD (600W)
CH.C:1+ HOT 1- COLD (1000W)
CH.A:2+ HOT 2- COLD (600W)
CH.B:1+ HOT 1- COLD (1000W)
CH.A:2+ HOT 2- COLD (600W)
CH.B:1+ HOT 1- COLD (1000W)
Fuse
Channel C & D
input XLR
sockets
Vari speed
cooling fan
Channel C & D
output Speakon
sockets (1 per ch)
Channel A & B
input XLR
sockets
Channel A & B
output Speakon
sockets (1 per ch)
Vari speed
cooling fan
Fuse
Channel C & D
input XLR
sockets
Vari speed
cooling fan
Channel C & D
dual output
Speakon sockets
Channel A & B
input XLR
sockets
Channel A & B
dual output
Speakon sockets
Vari speed
cooling fan
Q1004QB1000/600
A500 SEE PAGE 3 FOR INPUT WIRING • SEE PAGES 4 & 5 FOR OUTPUT WIRING • REAR PANEL
Q1004 • QB1000/600 SEE PAGE 3 FOR INPUT WIRING • SEE PAGES 4 & 5 FOR OUTPUT WIRING • REAR PANELS
A700v SEE PAGE 3 FOR INPUT WIRING • SEE PAGES 4 & 5 FOR OUTPUT WIRING • REAR PANEL
10
11
A5000 • A6000 SEE PAGE 6 FOR OPERATION DETAILS • FRONT PANEL
A750 • A1000 • A1004 • A1500 • A2000 • A3000 SEE PAGE 6 • FRONT PANEL
A4000 • A5003 SEE PAGE 6 FOR OPERATION DETAILS • FRONT PANEL
CHANNEL A CHANNEL B POWER
LINEAR AMPLIFIER
Axxxx
ATTENUATION dB ATTENUATION dB
POWER
CLIP
SIGNAL
INF INF
20 20
10 10
6 6
3 3
1 1
0 0
CHANNEL A CHANNEL B
POWER
LINEAR AMPLIFIER
Axxxx
ATTENUATION dB
POWER
CLIP
SIGNAL
INF
20
10
6
3
1
0
ATTENUATION dB
INF
20
10
6
3
1
0
CHANNEL A
CHANNEL B
POWER
POWER
LINEAR
POWER
AMPLIFIER
A6000
POWER ON
POWER ON
LIMITER
LIMITER
RMS
OUTPUT
VOLTS
RMS
OUTPUT
VOLTS
12
12
24
24
36
36
48
48
60
60
72
72
84
84
Power switchChannel B
gain
control
Power, Clip
and Signal
indicators
Channel A
gain
control
Power switchChannel B
gain
control
Power, Clip
and Signal
indicators
Channel A
gain
control
Channel A and B
Power switches
Channel B
gain
control
Power, Signal
& Limiter
indicators
Channel A
gain
control
The Limiter indicator lights when amp is being
driven into clip and shows SoftClip system is active.
If clip threshold is exceeded, the intensity of this LED
gives an indication of the degree of overdrive.
Model shown is A6000. Signal indicator values are different for A5000.
10
11
A5000 • A6000 SEE PAGE 3 FOR INPUT WIRING • SEE PAGES 4 & 5 FOR OUTPUT WIRING • REAR PANEL
A750 • A1000 • A1004 • A1500 • A2000 • A3000 SEE PAGES 3, 4 & 5 • REAR PANEL
A4000 • A5003 SEE PAGE 3 FOR INPUT WIRING • SEE PAGES 4 & 5 FOR OUTPUT WIRING • REAR PANEL
INPUT INPUT
CONNECTOR WIRING
2 HOT 3 COLD 1 GND
CONNECTOR WIRING
2 HOT 3 COLD 1 GND
CONNECTOR WIRING
1+ HOT 1- COLD
CONNECTOR WIRING
1+ HOT 1- COLD
FUSE RATING
SEE LEGEND ON AMPLIFIER
PLEASE SEE MANUAL SN
DANGER OF ELECTRIC SHOCK
WHEN COVERS REMOVED
LINEAR AUDIO
POWER AMPLIFIER
MODEL: Axxxx
LINK LINKOUTPUTS OUTPUTSOUTPUTS OUTPUTS
FUSE
CHANNEL B CHANNEL A
MADE IN ENGLAND BY
OTLEY LS21 3LP
CHEVIN RESEARCH LTD
CONNECTOR WIRING
2 HOT 3 COLD 1 GND
CONNECTOR WIRING
2 HOT 3 COLD 1 GND
CONNECTOR WIRING
1+ HOT 1- COLD
CONNECTOR WIRING
1+ HOT 1- COLD
DANGER OF ELECTRIC SHOCK
WHEN COVERS REMOVED
LINEAR AUDIO
POWER AMPLIFIER
MODEL: Axxxx
SN
LINK LINKINPUT INPUT
OUTPUT OUTPUTOUTPUT OUTPUT
CHANNEL B CHANNEL A
MADE IN ENGLAND BY
CHEVIN RESEARCH LTD
OTLEY LS21 3LP
FUSE RATING
220-240V = 30A (40A)
PLEASE SEE MANUAL
LOAD 2 OHMS MINIMUM
INPUT
INPUT
LINK
LINK
OUTPUTS
OUTPUTS
OUTPUTS
OUTPUTS
FUSE
FUSE
CHANNEL A INPUT
CHANNEL B INPUT
CHANNEL A OUTPUT
CHANNEL B OUTPUT
CONNECTOR WIRING
2 HOT 3 COLD 1 GND
CONNECTOR WIRING
2 HOT 3 COLD 1 GND
CONNECTOR WIRING
1+ HOT 1- COLD
CONNECTOR WIRING
1+ HOT 1- COLD
LOAD 2 OHMS MINIMUM
LOAD 2 OHMS MINIMUM SN
FUSE RATING
SEE LEGEND ON AMPLIFIER
FUSE RATING
SEE LEGEND ON AMPLIFIER
PLEASE SEE MANUAL
PLEASE SEE MANUAL
LINEAR AUDIO
POWER AMPLIFIER
MODEL: Axxxx
MADE IN ENGLAND BY
OTLEY LS21 3LP
CHEVIN RESEARCH LTD
MADE IN ENGLAND BY
OTLEY LS21 3LP
CHEVIN RESEARCH LTD
WARNING
THE 2 CHANNELS OF THIS AMPLIFIER
MUST NOT BE BRIDGED
OF ELECTRIC SHOCK
WHEN COVERS REMOVED
DANGER
FuseChannel B
input and link
connectors
Channel B
dual output
connectors
Vari speed
cooling fan
Vari speed
cooling fan
Channel A
input and link
connectors
Channel A
dual output
connectors
FuseChannel B
input and link
connectors
Channel B
dual output
connectors
Vari speed
cooling fan
Vari speed
cooling fan
Channel A
input and link
connectors
Channel A
dual output
connectors
FusesChannel A
input and link
connectors
Channel A
dual output
connectors
Vari speed
cooling fans
Vari speed
cooling fans
Channel B
dual output
connectors
Channel B
input and link
connectors
12
13
Line250 • Line500 SEE PAGE 6 FOR OPERATION DETAILS • FRONT PANEL
Q6 SEE PAGE 6 FOR OPERATION DETAILS • FRONT PANEL
Q900 SEE PAGE 6 FOR OPERATION DETAILS • FRONT PANEL
CHANNEL CCHANNEL A CHANNEL DCHANNEL B
Q-6
POWER
ATTENUATION dBATTENUATION dB ATTENUATION dBATTENUATION dB
POWERPOWER
CLIPCLIP
SIGNALSIGNAL
INFINF INFINF
2020 2020
1010 1010
66 66
33 33
11 11
00 00
POWER
POWER
Q900
CHANNEL B
CHANNEL D
CHANNEL A
CHANNEL C
POWER
POWER
CLIP
CLIP
SIGNAL
SIGNAL
line amplifier
CHANNEL A CHANNEL B
ATTENUATION dB ATTENUATION dB
SIGNAL
CLIP
POWER
CLIP
SIGNAL
INF INF
20 20
10 10
6 6
3 3
1 1
0 0
Line
Power
switch
Channel A
gain
control
Power, Clip
and Signal
indicators
Channel B
gain
control
Channel C
gain
control
Power, Clip
and Signal
indicators
Channel D
gain
control
Channel A
gain
control
Power, Clip
and Signal
indicators
Channel D
gain
control
Channel A/B
and C/D Power
switches
Channel B
gain
control
Channel C
gain
control
Power switchChannel B
gain
control
Power, Clip
and Signal
indicators
Channel A
gain
control
12
13
Line250 • Line500 SEE PAGE 3 FOR INPUT WIRING • SEE PAGES 4 & 5 FOR OUTPUT WIRING • REAR PANEL
Q6 SEE PAGE 3 FOR INPUT WIRING • SEE PAGES 4 & 5 FOR OUTPUT WIRING • REAR PANEL
Q900 SEE PAGE 3 FOR INPUT WIRING • SEE PAGES 4 & 5 FOR OUTPUT WIRING • REAR PANEL
INPUT D INPUT A
CONNECTOR WIRING
2 HOT 3 COLD 1 GND
CONNECTOR WIRING
2 HOT 3 COLD 1 GND
CONNECTOR WIRING
CH.C: 1+ HOT 1- COLD
CH.D: 2+ HOT 2- COLD
CONNECTOR WIRING
CH.A: 1+ HOT 1- COLD
CH.B: 2+ HOT 2- COLD
FUSE RATING
SEE LEGEND ON AMPLIFIER
PLEASE SEE MANUAL SN
DANGER OF ELECTRIC SHOCK
WHEN COVERS REMOVED
LINEAR AUDIO
POWER AMPLIFIER
MODEL: Q6
INPUT C INPUT BOUTPUTS OUTPUTSOUTPUTS OUTPUTS
FUSE
CHANNEL C+D CHANNEL A+B
MADE IN ENGLAND BY
OTLEY LS21 3LP
CHEVIN RESEARCH LTD
INPUT
INPUT
INPUT
INPUT
CONNECTOR WIRING
2 HOT 3 COLD 1 GND
CONNECTOR WIRING
2 HOT 3 COLD 1 GND
CONNECTOR WIRING
2 HOT 3 COLD 1 GND
CONNECTOR WIRING
2 HOT 3 COLD 1 GND
CONNECTOR WIRING
1+ HOT 1- COLD
CONNECTOR WIRING
1+ HOT 1- COLD
CONNECTOR WIRING
1+ HOT 1- COLD
CONNECTOR WIRING
1+ HOT 1- COLD
FUSE RATING
SEE LEGEND ON AMPLIFIER
FUSE RATING
SEE LEGEND ON AMPLIFIER
PLEASE SEE MANUAL
PLEASE SEE MANUAL
SN
SN
DANGER OF ELECTRIC SHOCK
WHEN COVERS REMOVED
DANGER OF ELECTRIC SHOCK
WHEN COVERS REMOVED
LINEAR AUDIO
POWER AMPLIFIER
MODEL: Q900
LINK
LINK
LINK
LINK
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
FUSE
FUSE
CHANNEL B
CHANNEL D
CHANNEL A
CHANNEL C
MADE IN ENGLAND BY
OTLEY LS21 3LP
CHEVIN RESEARCH LTD
DANGER OF ELECTRIC SHOCK
WHEN COVERS REMOVED
LINE AMPLIFIER
MODEL: LINE 500/250 SN
0v
1 1
0v
OUTPUT OUTPUT
INPUT INPUT
1 GND
2 HOT
3 COLD
1 GND
2 HOT
3 COLD
70v
2 2
70v100v
3 3
100v
CHANNEL B CHANNEL A
MADE IN ENGLAND BY
CHEVIN RESEARCH LTD
OTLEY
LS21 3LP
FUSE
FUSE RATING
LINE
220 - 240v
110 - 120v
500
20A
16A
250
10A
7A
FuseChannel
C & D input
connectors
Channel C+D
dual output
connectors
Vari speed
cooling fan
Vari speed
cooling fan
Channel
A & B input
connectors
Channel A+B
dual output
connectors
FusesChannel B
input & link
connectors
Vari speed
cooling fans
Vari speed
cooling fans
Channel D
input & link
connectors
Channel B
& channel D
dual output
connectors
Channel A
& channel C
dual output
connectors
Channel C
input & link
connectors
Channel A
input & link
connectors
FuseChannel B output
connector block
Channel B input
connector block
Vari speed
cooling fan
Vari speed
cooling fan
Channel A output
connector block
Channel A input
connector block
14
15
General specications A500 A700v A750 A1000 A1004 A1500 Q6 Q1004 QB1000/600
RMS power output
into 4
Ω
(per chan.) 350W n/a 425W 600W 1000W 1250W 600W 1000W 2x1000W/2x600W
into 8
Ω
(per chan.) 200W 600W 250W 350W 600W 650W 350W 600W 2x600W/2x350W
No. of channels 2 1 2 2 2 2 4 4 4
Power bandwidth +0dB, -3dB 2Hz - 40kHz 2Hz - 40kHz 2Hz - 80kHz 2Hz - 80kHz 2Hz - 80kHz 2Hz - 80kHz 2Hz - 80kHz 2Hz - 80kHz 2Hz - 80kHz
Slew rate in excess of 40V/µS 40V/µS 75V/µS 75V/µS 75V/µS 60V/µS 75V/µS 75V/µS 75V/µS
Gain x37.5 x70 x40 x50 x65 x70 x50 x65 x65 / x50
Total harmonic distortion
typical @ 1dB below clip 0.06% 0.06% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04%
20kHz @ 1dB below clip 0.08% 0.08% 0.07% 0.07% 0.07% 0.07% 0.07% 0.07% 0.07%
Signal to noise ratio
typ. ref. full output, unweighted -120dB -120dB 125dB -125dB -125dB -125dB -125dB -125dB -125dB
Worst case 10Hz - 30kHz -95dB -95dB -95dB -95dB -95dB -95dB -95dB -95dB -95dB
Crosstalk
typical -115dB n/a -115dB -115dB -115dB -115dB -115dB -115dB -115dB
worst case 10Hz - 30kHz -95dB n/a -95dB -95dB -95dB -95dB -95dB -95dB -95dB
Damping factor 400 400 400 400 400 400 400 400 400
Input impedance
electronically balanced 10k
Ω
10k
Ω
10k
Ω
10k
Ω
10k
Ω
10k
Ω
10k
Ω
10k
Ω
10k
Ω
Common mode rejection (typ.) -70dB -70dB -70dB -70dB -70dB -70dB -70dB -70dB -70dB
Input sensitivity
ref. full output into 4
Ω
1V RMS 1V RMS 1V RMS 1V RMS 1V RMS 1V RMS 1V RMS 1V RMS 1V RMS
Protection
clipping soft soft soft soft soft soft soft soft soft
load below 2.4
Ω
dynamic linear dynamic linear dynamic linear dynamic linear dynamic linear dynamic linear dynamic linear dynamic linear dynamic linear
shorted output, DC or RF at output immediate immediate immediate immediate immediate immediate immediate immediate immediate
Power consumption 1.2kVA 1.2kVA 1.5kVA 2kVA 3.3kVA 4kVA 4kVA 6.6kVA 5.2kVA
50/60Hz AC in volts 220-240V 220-240V 220-240V 220-240V 220-240V 220-240V 220-240V 220-240V 220-240V
internally selectable for 100-120V 100-120V 100-120V 100-120V 100-120V 100-120V 100-120V n/a 100-120V
Dimensions/weight
rack units 1U 1U 2U 2U 2U 2U 2U 3U 3U
height x width x depth (inches) 1.75x19x8.5 1.75x19x8.5 3.5x19x15 3.5x19x15 3.5x19x15 3.5x19x15 3.5x19x15 5.25x19x15 5.25x19x15
height x width x depth (mm) 44x483x215 44x483x215 88x483x381 88x483x381 88x483x381 88x483x381 88x483x381 132x483x381 132x483x381
gross weight 5.2kg/11.5lbs 5.1kg/11.2lbs 10kg/22lbs 10kg/22lbs 13.3kg/29lbs 14kg/31lbs 14kg/30.9lbs 16kg/34lbs 20kg/44lbs
net weight 4.7kg/9lbs 4kg/8.8lbs 8.4kg/18.5lbs 8.5kg/19lbs 11.7kg/26lbs 12.4kg/27lbs 12.3kg/27lbs 14kg/29.6lbs 18kg/40.5lbs
14
15
General specications Q900 A2000 A3000 A4000 A5000 A5003 A6000 Line250 Line500
RMS power output (10Hz-20kHz)
into 2
Ω
(per chan.) 1600W 1200W 1600W 2000W 2500W 2500W 3000W Line operation: Line operation:
into 4
Ω
(per chan.) 900W 650W 900W 1000W 1500W 1500W 2000W 70V 100V 70V 100V
into 8
Ω
(per chan.) 500W 350W 500W 600W 900W 900W 1200W 175W 250W 350W 500W
No. of channels 4 2 2 2 2 2 2 2 2
Power bandwidth +0dB, -3dB 2Hz - 80kHz 2Hz - 80kHz 2Hz - 80kHz 2Hz - 80kHz 2Hz - 50kHz 2Hz - 80kHz 2Hz - 50kHz 30Hz - 16kHz 30Hz - 16kHz
Slew rate in excess of 50V/µS 75V/µS 50V/µS 65V/µS 50V/µS 65V/µS 50V/µS 40V/µS 40V/µS
Gain x60 x50 x60 x65 x70 x70 x90 n/a n/a
Total harmonic distortion
typical @ 1dB below clip 0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04% 0.04%
20kHz @ 1dB below clip 0.07% 0.07% 0.07% 0.07% 0.07% 0.07% 0.07% n/a n/a
Signal to noise ratio
typ. ref. full output, unweighted -125dB -125dB -125dB -125dB -125dB -125dB -125dB -120dB -120dB
Worst case 10Hz - 30kHz -95dB -95dB -95dB -95dB -95dB -95dB -95dB -95dB -95dB
Crosstalk
typical -115dB -115dB -115dB -115dB -115dB -115dB -115dB -115dB -115dB
worst case 10Hz - 30kHz -95dB -95dB -95dB -95dB -95dB -95dB -95dB -95dB -95dB
Damping factor 400 400 400 400 400 400 400 n/a n/a
Input imped. electronically balanced 10k
Ω
10k
Ω
10k
Ω
10k
Ω
10k
Ω
10k
Ω
10k
Ω
10k
Ω
10k
Ω
Common mode rejection (typ.) -70dB -70dB -70dB -70dB -70dB -70dB -70dB -70dB -70dB
Input sensitivity
ref. full output into 4
Ω
1V RMS 1V RMS 1V RMS 1V RMS 1V RMS 1V RMS 1V RMS 1V RMS 1V RMS
Protection
clipping soft soft soft soft soft soft soft soft soft
load below 1.2
Ω
dynamic linear dynamic linear dynamic linear dynamic linear dynamic linear dynamic linear dynamic linear n/a n/a
shorted output, DC or RF at output immediate immediate immediate immediate immediate immediate immediate immediate immediate
Power consumption 5.3kVA per pair 3.9kVA 5.3kVA 6.6kVA 4kVA per chan. 8kVA 5.3kVA per chan. 1kVA 1.6kVA
50/60Hz AC in volts 220-240V 220-240V 220-240V 220-240V 220-240V 220-240V 220-240V 220-240V 220-240V
internally selectable for 100-120V 100-120V 100-120V n/a 100-120V n/a 100-120V 100-120V 100-120V
Dimensions/weight
rack units 4U 2U 2U 3U 4U 3U 4U 3U 3U
height x width x depth (inches) 7x19x15 3.5x19x15 3.5x19x15 5.25x19x15 7x19x15 5.25x19x15 7x19x15 5.25x19x15 5.25x19x15
height x width x depth (mm) 178x483x381 88x483x381 88x483x381 132x483x381 178x483x381 132x483x381 178x483x381 132x483x381 132x483x381
gross weight 23.5kg/59lbs 13.3kg/29lbs 14kg/31lbs 16kg/34lbs 23.5kg/59lbs 16kg/34lbs 23.5kg/59lbs 18kg/40lbs 22kg/50lbs
net weight 21.5kg/47.4lbs 11.7kg/26lbs 12.4kg/27lbs 14kg/29.6lbs 21.5kg/47.4lbs 14kg/29.6lbs 21.5kg/47.4lbs 16kg/36lbs 20kg/45lbs
Warranty
This precision engineered CHEVIN product is guaranteed against defects due to faulty materials and
workmanship for a period of twenty four (24) months from the date of the 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, modied 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 conrm the need for attention.
• Do not dispatch the goods without the prior approval of CHEVIN or its authorised agents. If asked to
return the goods, pack them carefully (preferably in the original carton) 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 for 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 attached warranty card should be completed and returned to CHEVIN RESEARCH LTD.
• Failure to register by not returning the warranty card in no way limits or invalidates the warranty, but
in the event of service being required, delay may result since warranty work cannot begin until the
original sale has been veried.
• In case of difculty, contact CHEVIN RESEARCH LTD. This warranty in no way affects your statutory
rights.
Chevin Research Ltd., 41a Ilkley Road, Otley, West Yorkshire LS21 3LP ENGLAND
Tel: +44 (0)1943 466060 • Fax: +44 (0)1943 466020
www.chevin-research.com • [email protected]
This manual is intended for informational purposes only. All details included herein are subject to change
without notice. Chevin Research Ltd. shall not be held responsible for any damages, direct or indirect,
arising from or relating to the use of this manual.
© Chevin Research Ltd. 2004. All rights reserved.
Mono bridge loading and power outputs (see page 6 for details)
Model Minimum load Power output
A500 1 load of 8Ω 650W
A750 1 load of 8Ω 850W
A1000 1 load of 8Ω 1200W
A1004 1 load of 8Ω 2000W
A1500 1 load of 8Ω 2500W
A2000 1 load of 4Ω 2400W
A3000 1 load of 4Ω 3000W
A4000 1 load of 4Ω 4000W
A5003 1 load of 4Ω 5000W
Q900 1 load of 4Ω per channel pair 3000W per channel pair
Q6 1 load of 8Ω per channel pair 1200W per channel pair
Q1004 1 load of 8Ω per channel pair 2000W per channel pair
Range guide • 1.0c • Dec 2004
This manual suits for next models
17
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