Laney LG20R User manual

USER MANUAL
LG20R

SAVETHESE INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
WARNING:When using electric products,basic cautions should always be followed,including the following.
1. Read all safety and operating instructions before using this product
2. The product should be powered by a three pin `grounded (or earthed) plug connected to a power socket with a grounded earth outlet.
3. All safety and operating instructions should be retained for future reference
4. Obey all cautions in the Operating instructions and on the back of the unit
5. All operating instructions should be followed
6. This product should not be used near water,i.e.a bathtub,sink,swimming pool,wet basement,etc.
7. This product should be located so that its position does not interfere with its proper ventilation. It should not be placed flat against a wall or placed in a built up enclosure that
will impede the flow of cooling air.
8. This product should not be placed near a source of heat such as stove,radiator,or another heat producing amplifier.
9. Connect only to a power supply of the type marker on the unit adjacent to the power supply cord.
10.Never break off the ground pin on a power supply cord.
11.Power supply cords should always be handled carefully. Never walk or place equipment on power supply cords. Periodically check cords for cuts or signs of stress,especially at
the plug and the point where the chord exits the unit.
12.The power supply cord should be unplugged when the unit is to be unused for long periods of time.
13.If this product is to be mounted in an equipment rack,rear support should be provided.
14.The user should allow easy access to any mains plug,mains coupler and mains switch used in conjunction with this unit thus making it readily operable.
15.Metal parts can be cleaned with a damp cloth. The vinyl covering used on some units can be cleaned with a damp cloth or ammonia based household cleaner if necessary.
Disconnect the unit from the power supply before cleaning.
16.Care should be taken so that objects do not fall and liquids are not spilled into the unit through any ventilation holes or openings. On no account place drinks on the unit.
17.A qualified service technician should check the unit if:
18.The user should not attempt to service the equipment. All service work is done by a qualified service technician.
19.Exposure to extremely high noise levels may cause a permanent hearing gloss. Individuals vary considerably in susceptibility to noise induced hearing loss,but nearly everyone
will lose some hearing if exposed to sufficiently intense noise for a sufficient time. The U.S.Government's Occupational Safety and HealthAdministration (OSHA) has specified
the following permissible noise level exposure.
Duration Per Day In Hours Sound Level dBA,slow response
8 90
6 92
4 95
3 97
2 100
1 ½ 102
1 105
½ 110
¼ or less 115
According to OSHA,any exposure in excess of the above permissible limits could result in some hearing loss. Ear plugs or protectors in the ear canals or over the ears must be
worn when operating this amplification system in order to prevent a permanent hearing loss if exposure exceeds the limits set forth above. To ensure against potentially dangerous
exposure to high sound pressure levels it is recommended that all persons exposed to equipment capable of producing high sound pressure levels such as this amplification system
be protected by hearing protectors while this unit is in operation.
The power cord has been damaged
Anything has fallen or spilled into the unit
The unit does not appear to operate correctly
The unit has been dropped or the enclosure damaged.
Page 2 /12 Page 3 /12

SAVETHESE INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
WARNING:When using electric products,basic cautions should always be followed,including the following.
1. Read all safety and operating instructions before using this product
2. The product should be powered by a three pin `grounded (or earthed) plug connected to a power socket with a grounded earth outlet.
3. All safety and operating instructions should be retained for future reference
4. Obey all cautions in the Operating instructions and on the back of the unit
5. All operating instructions should be followed
6. This product should not be used near water,i.e.a bathtub,sink,swimming pool,wet basement,etc.
7. This product should be located so that its position does not interfere with its proper ventilation. It should not be placed flat against a wall or placed in a built up enclosure that
will impede the flow of cooling air.
8. This product should not be placed near a source of heat such as stove,radiator,or another heat producing amplifier.
9. Connect only to a power supply of the type marker on the unit adjacent to the power supply cord.
10.Never break off the ground pin on a power supply cord.
11.Power supply cords should always be handled carefully. Never walk or place equipment on power supply cords. Periodically check cords for cuts or signs of stress,especially at
the plug and the point where the chord exits the unit.
12.The power supply cord should be unplugged when the unit is to be unused for long periods of time.
13.If this product is to be mounted in an equipment rack,rear support should be provided.
14.The user should allow easy access to any mains plug,mains coupler and mains switch used in conjunction with this unit thus making it readily operable.
15.Metal parts can be cleaned with a damp cloth. The vinyl covering used on some units can be cleaned with a damp cloth or ammonia based household cleaner if necessary.
Disconnect the unit from the power supply before cleaning.
16.Care should be taken so that objects do not fall and liquids are not spilled into the unit through any ventilation holes or openings. On no account place drinks on the unit.
17.A qualified service technician should check the unit if:
18.The user should not attempt to service the equipment. All service work is done by a qualified service technician.
19.Exposure to extremely high noise levels may cause a permanent hearing gloss. Individuals vary considerably in susceptibility to noise induced hearing loss,but nearly everyone
will lose some hearing if exposed to sufficiently intense noise for a sufficient time. The U.S.Government's Occupational Safety and HealthAdministration (OSHA) has specified
the following permissible noise level exposure.
Duration Per Day In Hours Sound Level dBA,slow response
8 90
6 92
4 95
3 97
2 100
1 ½ 102
1 105
½ 110
¼ or less 115
According to OSHA,any exposure in excess of the above permissible limits could result in some hearing loss. Ear plugs or protectors in the ear canals or over the ears must be
worn when operating this amplification system in order to prevent a permanent hearing loss if exposure exceeds the limits set forth above. To ensure against potentially dangerous
exposure to high sound pressure levels it is recommended that all persons exposed to equipment capable of producing high sound pressure levels such as this amplification system
be protected by hearing protectors while this unit is in operation.
The power cord has been damaged
Anything has fallen or spilled into the unit
The unit does not appear to operate correctly
The unit has been dropped or the enclosure damaged.
Page 2 /12 Page 3 /12

INTRODUCTION
The LG20R is an open back guitar combo loaded with an 8 inch loudspeaker. It is a retro styled cabinet with the controls on the top
face for ease of use. It has a split channel preamp layout,which gives you separate clean and drive level controls through a shared
master EQ with bass,mid and treble. It features a headphone socket for private listening; CD/Line in socket should you need to play
along to a CD/MP3 and a headphone socket for some private time without waking the neighbours.Finally it features a built in spring
line reverb with level control.
An explanation of these features follows on pages 6-8.
BEFORE SWITCHING ON
After unpacking your amplifier check that it is factory fitted with a three pin 'grounded' (or earthed) plug. Before plugging into the power supply
ensure you are connecting to a grounded earth outlet.
Ifyoushouldwish tochangethefactoryfittedplugyourself,ensurethatthewiringconventionapplicabletothecountrywheretheamplifieristobeused
isstrictlyconformedto. AsanexampleintheUnitedKingdomthecablecolourcodeforconnectionsareasfollows.
NOTE
This manual has been written for easy access of information. The front and rear panels are graphically illustrated,with each control and feature
numbered. For a description of the function of each control feature,simply check the number with the explanations adjacent to each panel.
Your Laney amplifier has undergone a thorough two stage,pre-delivery inspection,involving actual play testing.
When you first receive your Laney guitar amplifier,follow these simple procedures:
(i) Ensure that the amplifier is the correct voltage for the country it is to be used in.
ii) Connect your instrument with a high quality shielded instrument cable. You have probably spent considerable money on your amplifier and
guitar - don’t use poor quality cable it won’t do your gear justice.
Please retain your original carton and packaging so in the unlikely event that some time in the future your amplifier should require servicing you
will be able to return it to your dealer securely packed.
Care of your Laney amplifier will prolong it's life.....and yours!
EARTHORGROUND-GREEN/YELLOW
NEUTRAL-BLUE
LIVE-BROWN
Laney
OPERATING INSTRUCTIONS
Laney
OPERATING INSTRUCTIONS
Page 4 /12 Page 5 /12
Dear Player,
Thank you very much for purchasing your new Laney product and becoming part of the
worldwide Laney family.Each and every Laney unit is designed and built with the utmost
attention to care and detail,so I trust yours will give you many years of enjoyment.
Laney products have a heritage which stretches back to 1967 when I first began building
valve amplifiers in my parent’s garage.Since then we have moved on from strength to
strength developing an extensive range of guitar,bass,public address and keyboard
amplification products along with a list of Laney endorsees that includes some of the
world’s most famous and respected musicians. At the same time we believe we have not
lost sight of the reason Laney was founded in the first place - a dedication to building
great sounding amplification for working musicians.
Warm Regards,
Lyndon Laney CEO

INTRODUCTION
The LG20R is an open back guitar combo loaded with an 8 inch loudspeaker. It is a retro styled cabinet with the controls on the top
face for ease of use. It has a split channel preamp layout,which gives you separate clean and drive level controls through a shared
master EQ with bass,mid and treble. It features a headphone socket for private listening; CD/Line in socket should you need to play
along to a CD/MP3 and a headphone socket for some private time without waking the neighbours.Finally it features a built in spring
line reverb with level control.
An explanation of these features follows on pages 6-8.
BEFORE SWITCHING ON
After unpacking your amplifier check that it is factory fitted with a three pin 'grounded' (or earthed) plug. Before plugging into the power supply
ensure you are connecting to a grounded earth outlet.
Ifyoushouldwish tochangethefactoryfittedplugyourself,ensurethatthewiring conventionapplicabletothecountrywheretheamplifieristobeused
isstrictlyconformedto. AsanexampleintheUnitedKingdomthecablecolourcodeforconnectionsareasfollows.
NOTE
This manual has been written for easy access of information. The front and rear panels are graphically illustrated,with each control and feature
numbered. For a description of the function of each control feature,simply check the number with the explanations adjacent to each panel.
Your Laney amplifier has undergone a thorough two stage,pre-delivery inspection,involving actual play testing.
When you first receive your Laney guitar amplifier,follow these simple procedures:
(i) Ensure that the amplifier is the correct voltage for the country it is to be used in.
ii) Connect your instrument with a high quality shielded instrument cable. You have probably spent considerable money on your amplifier and
guitar - don’t use poor quality cable it won’t do your gear justice.
Please retain your original carton and packaging so in the unlikely event that some time in the future your amplifier should require servicing you
will be able to return it to your dealer securely packed.
Care of your Laney amplifier will prolong it's life.....and yours!
EARTHORGROUND-GREEN/YELLOW
NEUTRAL-BLUE
LIVE-BROWN
Laney
OPERATING INSTRUCTIONS
Laney
OPERATING INSTRUCTIONS
Page 4 /12 Page 5 /12
Dear Player,
Thank you very much for purchasing your new Laney product and becoming part of the
worldwide Laney family.Each and every Laney unit is designed and built with the utmost
attention to care and detail,so I trust yours will give you many years of enjoyment.
Laney products have a heritage which stretches back to 1967 when I first began building
valve amplifiers in my parent’s garage.Since then we have moved on from strength to
strength developing an extensive range of guitar,bass,public address and keyboard
amplification products along with a list of Laney endorsees that includes some of the
world’s most famous and respected musicians. At the same time we believe we have not
lost sight of the reason Laney was founded in the first place - a dedication to building
great sounding amplification for working musicians.
Warm Regards,
Lyndon Laney CEO

www.laney.co.uk
Laney
CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN
VOLUME BASS MID TREBLE REVERB CD/LINE INPHONES POWER
1
0
LG20R DRIVE MASTER
ON
Controls the amount of treble present on the clean channel.
Controls the amount of reverb applied to the signal.
Fancy playing along with a backing track? Connect your CD/MP3 player here.
Don’t want to wake your neighbours? Connect your headphones here. The internal loudspeaker is automatically switched off.
When‘on’ indicates that power is connected to the unit and it is ready to go.
(Always switch off and disconnect the power cord when not in use)
Main power switch for the unit.
This socket should be used for connecting your instrument to the amplifier. Only use a good quality screened cable.
Controls the volume level of the clean channel.
Switch in to activate the overdrive‘Crunch’ channel. When active,control the amount of distortion with and the overall
volume with
Indicates that the drive channel is active.
Controls the Drive channel gain,low down for classic rock and blues,higher up for hard rock and metal. Use in conjunction
with to get the overall level balanced how you want it.
Controls the overall level from the drive channel,use in conjunction with .
Controls the amount of bass or bottom end present on the clean channel.
Controls the amount of mid present on the clean channel.
5
6
6
5
1
Page 6 /12 Page 7 /12
2
3
4
15
FRONT PANEL CONTROLS
Laney
OPERATING INSTRUCTIONS
Laney
OPERATING INSTRUCTIONS
1 2 5 98
13
7 10
10
11 14
5
6
7
8
9
4
11
Displays the model number,power requirements and serial number of the unit.
15
6 12
12
13
14
3

www.laney.co.uk
Laney
CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN
VOLUME BASS MID TREBLE REVERB CD/LINE INPHONES POWER
1
0
LG20R DRIVE MASTER
ON
Controls the amount of treble present on the clean channel.
Controls the amount of reverb applied to the signal.
Fancy playing along with a backing track? Connect your CD/MP3 player here.
Don’t want to wake your neighbours? Connect your headphones here. The internal loudspeaker is automatically switched off.
When‘on’ indicates that power is connected to the unit and it is ready to go.
(Always switch off and disconnect the power cord when not in use)
Main power switch for the unit.
This socket should be used for connecting your instrument to the amplifier. Only use a good quality screened cable.
Controls the volume level of the clean channel.
Switch in to activate the overdrive‘Crunch’ channel. When active,control the amount of distortion with and the overall
volume with
Indicates that the drive channel is active.
Controls the Drive channel gain,low down for classic rock and blues,higher up for hard rock and metal. Use in conjunction
with to get the overall level balanced how you want it.
Controls the overall level from the drive channel,use in conjunction with .
Controls the amount of bass or bottom end present on the clean channel.
Controls the amount of mid present on the clean channel.
5
6
6
5
1
Page 6 /12 Page 7 /12
2
3
4
15
FRONT PANEL CONTROLS
Laney
OPERATING INSTRUCTIONS
Laney
OPERATING INSTRUCTIONS
1 2 5 98
13
7 10
10
11 14
5
6
7
8
9
4
11
Displays the model number,power requirements and serial number of the unit.
15
6 12
12
13
14
3

Page 8 /12 Page 9 /12
Laney
OPERATING INSTRUCTIONS
Laney
OPERATING INSTRUCTIONS
QUICK START SETTINGS - Suggestions only,experiment!
QUICK START SETTINGS - CONTINUED
VOLUME BASS MID TREBLE REVERB CD/LINE INPHONES POWER
1
0
LG20R DRIVE MASTER
ON
CLEAN SETTINGS
OUT
VOLUME BASS MID TREBLE REVERB CD/LINE INPHONES POWER
1
0
LG20R DRIVE MASTER
ON
BLUES SETTINGS
VOLUME BASS MID TREBLE REVERB CD/LINE INPHONES POWER
1
0
LG20R DRIVE MASTER
ON
ROCK SETTINGS
VOLUME BASS MID TREBLE REVERB CD/LINE INPHONES POWER
1
0
LG20R DRIVE MASTER
ON
METAL SETTINGS
Displays the model number,power requirements and serial number
of the unit.Make sure the specified voltage is correct for your
country! The correct mains voltage is indicated on the rear panel
The mains lead protudes from the underside of the chassis for
connection to your power source.
(Always switch off and unplug the power cord from the wall
socket when not in use)
POWER CONNECTION
15
16
15
16 IN
IN
IN

Page 8 /12 Page 9 /12
Laney
OPERATING INSTRUCTIONS
Laney
OPERATING INSTRUCTIONS
QUICK START SETTINGS - Suggestions only,experiment!
QUICK START SETTINGS - CONTINUED
VOLUME BASS MID TREBLE REVERB CD/LINE INPHONES POWER
1
0
LG20R DRIVE MASTER
ON
CLEAN SETTINGS
OUT
VOLUME BASS MID TREBLE REVERB CD/LINE INPHONES POWER
1
0
LG20R DRIVE MASTER
ON
BLUES SETTINGS
VOLUME BASS MID TREBLE REVERB CD/LINE INPHONES POWER
1
0
LG20R DRIVE MASTER
ON
ROCK SETTINGS
VOLUME BASS MID TREBLE REVERB CD/LINE INPHONES POWER
1
0
LG20R DRIVE MASTER
ON
METAL SETTINGS
Displays the model number,power requirements and serial number
of the unit.Make sure the specified voltage is correct for your
country! The correct mains voltage is indicated on the rear panel
The mains lead protudes from the underside of the chassis for
connection to your power source.
(Always switch off and unplug the power cord from the wall
socket when not in use)
POWER CONNECTION
15
16
15
16 IN
IN
IN

SupplyVoltage ~100V,~120V,~220V,~230V,~240V 50/60Hz Factory Option
Power Consumption 30W
Output Power Rating 15W
Loudspeaker 8” Custom Designed Driver
TEC -Tube Emulating Circuitry
Features Headphone socket,
CD In (10K Input impedance) (Nominal 300mV Input level)
EQ Passive Bass,Middle andTreble
Input Impedance 1MOhm/47pF
Size 350*400*212 (H*W*D)
UnitWeight 8.25 Kg
PackingWeight 9.00 Kg
This product conforms to:
European EMC directive(2004/108/EC),LowVoltage Directive (72/23/EEC) and CE mark Directive (93/68/EEC)
Page 10 /12
Laney
OPERATING INSTRUCTIONS
Page 11 /12
Laney
OPERATING INSTRUCTIONS
General Notes
Amplifier connection: In order to avoid damage,it is advisable to establish and follow a pattern for turning on and off your
equipment. With all system parts connected,turn on source equipment,tape decks,cd players,mixers,effects processors etc.BEFORE
turning on your guitar amplifier. Many products have large transient surges at turn on and off which can cause damage to your speakers.
By turning on your guitar amplifier LAST and making sure its Volume controls are set to minimum any transients from other equipment
will not reach your loudspeakers. Wait until all system parts have stabilised; usually a couple of seconds. Similarly when turning off your
system always turn down the Volume controls on your guitar amplifier and then turn off its power before turning off other equipment.
Cables: never use shielded or microphone cable for any speaker connections as this will not be substantial enough to handle the
amplifier load and could cause damage to your amplifier system.
Caution:These professional loudspeaker systems are capable of generating very high sound pressure levels.Use care with placement
and operation to avoid exposure to excessive levels that can cause permanent hearing damage. (Refer to guidelines on page 2)
Servicing:The user should not attempt to service these products.Refer all servicing to qualified service personnel.
SAMPLE SYSTEM SPECIFICATIONS

SupplyVoltage ~100V,~120V,~220V,~230V,~240V 50/60Hz Factory Option
Power Consumption 30W
Output Power Rating 15W
Loudspeaker 8” Custom Designed Driver
TEC -Tube Emulating Circuitry
Features Headphone socket,
CD In (10K Input impedance) (Nominal 300mV Input level)
EQ Passive Bass,Middle andTreble
Input Impedance 1MOhm/47pF
Size 350*400*212 (H*W*D)
UnitWeight 8.25 Kg
PackingWeight 9.00 Kg
This product conforms to:
European EMC directive(2004/108/EC),LowVoltage Directive (72/23/EEC) and CE mark Directive (93/68/EEC)
Page 10 /12
Laney
OPERATING INSTRUCTIONS
Page 11 /12
Laney
OPERATING INSTRUCTIONS
General Notes
Amplifier connection: In order to avoid damage,it is advisable to establish and follow a pattern for turning on and off your
equipment. With all system parts connected,turn on source equipment,tape decks,cd players,mixers,effects processors etc.BEFORE
turning on your guitar amplifier. Many products have large transient surges at turn on and off which can cause damage to your speakers.
By turning on your guitar amplifier LAST and making sure its Volume controls are set to minimum any transients from other equipment
will not reach your loudspeakers. Wait until all system parts have stabilised; usually a couple of seconds. Similarly when turning off your
system always turn down the Volume controls on your guitar amplifier and then turn off its power before turning off other equipment.
Cables: never use shielded or microphone cable for any speaker connections as this will not be substantial enough to handle the
amplifier load and could cause damage to your amplifier system.
Caution:These professional loudspeaker systems are capable of generating very high sound pressure levels.Use care with placement
and operation to avoid exposure to excessive levels that can cause permanent hearing damage. (Refer to guidelines on page 2)
Servicing:The user should not attempt to service these products.Refer all servicing to qualified service personnel.
SAMPLE SYSTEM SPECIFICATIONS

In the interest of continued product development, Laney Reserves the right to amend product specification without prior notification.
POWER TO THE MUSIC
Laney
@
BLOCK DIAGRAM
JAZZ
AMPICONS ARE HERE TO HELP!
BLUES ROCK
METAL
INTERNAL
LOUDSPEAKER
INPUT
POWER
AMP
CD IN HEADPHONES
DRIVE
CLEAN
EQ SECTION
REVERB