Laney LC15 User manual

MODEL : LC15
Laney
USER MANUAL
LC SERIES
: LC15R
www.laney.co.uk

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. All safety and operating instructions should be retained for future reference
3. Obey all cautions in the Operating instructions and on the back of the unit
4. All operating instructions should be followed
5. This product should not be used near water, i.e. a bathtub, sink, swimming pool, wet basement, etc.
6. 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.
7. This product should not be placed near a source of heat such as stove, radiator, or another heat producing
amplifier.
8. Connect only to a power supply of the type marker on the unit adjacent to the power supply cord.
9. Never break off the ground pin on a power supply cord.
10. 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.
11. The power supply cord should be unplugged when the unit is to be unused for long periods of time.
12. If this product is to be mounted in an equipment rack, rear support should be provided.
13. 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.
14. 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.
15. 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.
16. A qualified service technician should check the unit if:
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.
17. The user should not attempt to service the equipment. All service work is done by a qualified
service technician.
18. 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
Health Administration (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
SAVE THESE INSTRUCTIONS

Laney
Care of your Laney amplifier will prolong it's life.....and yours!.
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.
If you should wish to change the factory fitted plug yourself, ensure that the wiring convention applicable to the country
where the amplifier is to be used is strictly conformed to. As an example in the United Kingdom the cable colour code
for connections are as follows.
EARTH OR GROUND - GREEN/YELLOW
NEUTRAL - BLUE
LIVE - BROWN
Congratulations on your decision to purchase a Laney amplifier.
Laney products are designed with ease of operation as a primary objective, however to ensure you derive the best from
your new amplifier, it is important you take time to read this user manual and to familiarise yourself with the control
functions and facilities available
INTRODUCTION
BEFORE
SWITCHING ON
This manual has been written for easy access of information. The front and rear panels of each unit 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 valve amplifier has undergone a thorough two stage, pre-delivery inspection, involving actual play testing,
as well as valve burn in. Valves are the most important component in your Laney valve amp. However they are also the
most fragile component. The glass envelope and valve filaments can easily be damaged in transit without any apparent
signs of damage to the box, amp or valves. Valve damage is however quite simple to diagnose and even more simple to
remedy. These procedures are explained later in this manual..
When you first recieve your Laney valve amp, follow these simple procedures:
(i) Ensure that the amplifier is set at the correct voltage for the country it is to be used in.
(ii) Connect your instrument with a high quality shielded instrument cable. Use of cheap cables will compromise the
sound of your instrument and your amplifier.
If there is a problem with your Laney valve amplifier
DON'T DO
PHONE YOUR DEALER!
11
LC15 & LC15R manual

RECOMMENDED SETTINGS
For those of you who can't manage to read the manual before switching the amp on, here are some suggested settings to
get you going. These setting illustrate the versatility of this unit and should be used as starting points for obtaining your
own tone. All the settings below feature LC15 front panels. Setting for LC15R are exactly the same. Reverb should be
set to desired level.
N.B The nature of valve amplifiers means that the front and back panel of the amplifier get warm. This is not a cause for
concern
66
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1010 00
99
88
77
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1010 00
11
33
22
GAINGAIN INPUTSINPUTS
00
11
POWERPOWER
LC15LC15
MIDDLEMIDDLE TREBLETREBLE BASSBASS VOLUMEVOLUME
BRIGHTBRIGHT
HIHI LOLO
99
88
77
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1010 00
11
33
22
99
88
77
11
33
22
99
88
77
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1010 00
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99
88
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1010 00
11
33
22
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1010 00
99
88
77
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1010 00
11
33
22
GAINGAIN INPUTSINPUTS
00
11
POWERPOWER
LC15LC15
MIDDLEMIDDLE TREBLETREBLE BASSBASS VOLUMEVOLUME
BRIGHTBRIGHT
HIHI LOLO
99
88
77
66
55
44
1010 00
11
33
22
99
88
77
11
33
22
99
88
77
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1010 00
11
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99
88
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1010 00
11
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22
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1010 00
99
88
77
66
55
44
1010 00
11
33
22
GAINGAIN INPUTSINPUTS
00
11
POWERPOWER
LC15LC15
MIDDLEMIDDLE TREBLETREBLE BASSBASS VOLUMEVOLUME
BRIGHTBRIGHT
HIHI LOLO
99
88
77
66
55
44
1010 00
11
33
22
99
88
77
11
33
22
99
88
77
66
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1010 00
11
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99
88
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1010 00
11
33
22
66
55
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1010 00
99
88
77
66
55
44
1010 00
11
33
22
GAINGAIN INPUTSINPUTS
00
11
POWERPOWER
LC15LC15
MIDDLEMIDDLE TREBLETREBLE BASSBASS VOLUMEVOLUME
BRIGHTBRIGHT
HIHI LOLO
99
88
77
66
55
44
1010 00
11
33
22
99
88
77
11
33
22
99
88
77
66
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1010 00
11
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22
99
88
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66
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1010 00
11
33
22
66
55
44
1010 00
99
88
77
66
55
44
1010 00
11
33
22
GAINGAIN INPUTSINPUTS
00
11
POWERPOWER
LC15LC15
MIDDLEMIDDLE TREBLETREBLE BASSBASS VOLUMEVOLUME
BRIGHTBRIGHT
HIHI LOLO
99
88
77
66
55
44
1010 00
11
33
22
99
88
77
11
33
22
99
88
77
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1010 00
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99
88
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1010 00
11
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22
BLUES LEAD
ROCK LEAD
CLEAN
CLEAN CRUNCH
ROCK RHYTHM
Laney
22
LC15 & LC15R manual

EXPLANATION OF TERMS
14
11
12
11
15
~~
50 WATTS 50-60Hz50 WATTS 50-60Hz
220-240V220-240V
100-120V100-120V
~~~~
008124A008124A
T100mAT100mAT250mAT250mA T500mAT500mA
MODEL No. LC15MODEL No. LC15
LINELINE
OUTOUT MADE IN THE U.K. BY BLT INDUSTRIES LTD.MADE IN THE U.K. BY BLT INDUSTRIES LTD.
SERIAL NO.SERIAL NO.
008124B008124B
RAIN OR MOISTURE.RAIN OR MOISTURE.
EXPOSE THIS APPLIANCE TOEXPOSE THIS APPLIANCE TO
OR ELECTRIC SHOCK DO NOTOR ELECTRIC SHOCK DO NOT
TO REDUCE THE RISK OF FIRETO REDUCE THE RISK OF FIRE
WARNINGWARNING
SUPPLY VOLTAGESUPPLY VOLTAGE
POWER FUSEPOWER FUSE
QUALIFIED SERVICE PERSONELQUALIFIED SERVICE PERSONEL
INSIDE. REFER SERVICING TO INSIDE. REFER SERVICING TO
NO USER SERVICABLE PARTSNO USER SERVICABLE PARTS
SHOCK DO NOT REMOVE COVERSHOCK DO NOT REMOVE COVER
TO REDUCE THE RISK OF ELECTRICTO REDUCE THE RISK OF ELECTRIC
CAUTIONCAUTION
SAME TYPE AND RATINGSAME TYPE AND RATING
REPLACE ONLY WITHREPLACE ONLY WITH
CAUTIONCAUTION
WARNINGWARNING
THIS APPARATUS THIS APPARATUS
MUST BE EARTHEDMUST BE EARTHED
MAXIMUM POWER MAXIMUM POWER
CONSUMPTIONCONSUMPTION
HT FUSEHT FUSE
13
66
55
44
1010 00
99
88
77
66
55
44
1010 00
11
33
22
GAINGAIN INPUTSINPUTS
00
11
POWERPOWER
LC15LC15
MIDDLEMIDDLE TREBLETREBLE BASSBASS VOLUMEVOLUME
BRIGHTBRIGHT
HIHI LOLO
99
88
77
66
55
44
1010 00
11
33
22
99
88
77
11
33
22
99
88
77
66
55
44
1010 00
11
33
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99
88
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1010 00
11
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22
LC15R
1
1
2
3
4
8
5
6
7
9
HI INPUT: This input provides maximum gain from the instrument to the pre amp. Is is extremely useful for
guitars with single coiled or low gain humbucker type pickups. Use of high gain pickups in this input
may drive the preamp too severly, causing a "mushy" output
LO INPUT: This input is attenuated down approximately 6dB from the Hi input. It is useful in obtaining output
that is "tight" not "mushy" from high end gain humbucker type pickups.
GAIN: This adjusts the level of overdrive in the preamp. At low levels the preamp runs very clean, at levels up to
7 the gain and distortion increases smoothly. When the control is set beyond 7 another stage of gain is introduced
resulting in a saturated valve sound.
BRIGHT SWITCH: Adds brightness and sparkle to the upper frequencies of the amplifier. These upper
frequencies are more noticable at low gain settings.
BASS: Controls the low frequency EQ in the preamplifier.
MIDDLE: Controls the mid frequency EQ in the preamplifier.
TREBLE: Controls the high frequency EQ in the preamplifier.
VOLUME: Sets the overall listening level of the amplifier.
POWER FUSES: This fuse protects the AC power of the overall amplifier. USE ONLY THE CORRECT SIZE
AND RATING OF FUSE AS SPECIFIED ON THE PANEL. If a fuse blows or fails and a replacement of the
same size and rating is installed and it in turn blows, the amplifier has suffered a malfunction internally and needs
immediate service from a qualified technician. DO NOT TRY USING A FUSE OF HIGHER RATING. Using a
fuse that is too large in current rating may cause serious, irrepairable damage to the amplifier and presents a
serious fire hazard.
910
~~
50 WATTS 50-60Hz50 WATTS 50-60Hz
220-240V220-240V
100-120V100-120V
~~~~
008124A008124A
T100mAT100mAT250mAT250mA T500mAT500mA
MODEL No. LC15MODEL No. LC15
LINELINE
OUTOUT MADE IN THE U.K. BY BLT INDUSTRIES LTD.MADE IN THE U.K. BY BLT INDUSTRIES LTD.
SERIAL NO.SERIAL NO.
008124B008124B
RAIN OR MOISTURE.RAIN OR MOISTURE.
EXPOSE THIS APPLIANCE TOEXPOSE THIS APPLIANCE TO
OR ELECTRIC SHOCK DO NOTOR ELECTRIC SHOCK DO NOT
TO REDUCE THE RISK OF FIRETO REDUCE THE RISK OF FIRE
WARNINGWARNING
SUPPLY VOLTAGESUPPLY VOLTAGE
POWER FUSEPOWER FUSE
QUALIFIED SERVICE PERSONELQUALIFIED SERVICE PERSONEL
INSIDE. REFER SERVICING TO INSIDE. REFER SERVICING TO
NO USER SERVICABLE PARTSNO USER SERVICABLE PARTS
SHOCK DO NOT REMOVE COVERSHOCK DO NOT REMOVE COVER
TO REDUCE THE RISK OF ELECTRICTO REDUCE THE RISK OF ELECTRIC
CAUTIONCAUTION
SAME TYPE AND RATINGSAME TYPE AND RATING
REPLACE ONLY WITHREPLACE ONLY WITH
CAUTIONCAUTION
WARNINGWARNING
THIS APPARATUS THIS APPARATUS
MUST BE EARTHEDMUST BE EARTHED
MAXIMUM POWER MAXIMUM POWER
CONSUMPTIONCONSUMPTION
HT FUSEHT FUSE
8
2 3 456
17
Laney
33
LC15 & LC15R manual

HT FUSE: This fuse protects the DC power of the overall amplifier. USE ONLY THE CORRECT SIZE AND
RATING OF FUSE AS SPECIFIED ON THE PANEL. If a fuse blows or fails and a replacement of the same size
and rating is installed and it in turn blows, the amplifier has suffered a malfunction internally and needs
immediate service from a qualified technician. DO NOT TRY USING A FUSE OF HIGHER RATING. Using a
fuse that is too large in current rating may cause serious, irrepairable damage to the amplifier and present a serious
fire hazard.
LINE OUT: This socket provides an output from the preamplifier. Nominal level 0dBu.
EXTERNAL SPEAKER: Use to connect an extension cabinet, minimum impedance must not be less than 4
Ohm. Mismatch of impedance will reduce impedance and in some cases may cause damage to your amplifier.
REVERB FOOTSWITCH: Provided for the connection of a Laney FS1 footswich (optional) to switch reverb.
FX RETURN: This is provided to receive the output from an external effects unit being driven from the send
socket (15).
FX SEND:This provides an output from the preamplifier to drive effects units in conjunction with (14)
EXPLANATION OF TERMS
Laney
44
LC15 & LC15R manual
USEFUL HINTS AND TIPS
14
11
12
11
15
~~
50 WATTS 50-60Hz50 WATTS 50-60Hz
220-240V220-240V
100-120V100-120V
~~~~
008124A008124A
T100mAT100mAT250mAT250mA T500mAT500mA
MODEL No. LC15MODEL No. LC15
LINELINE
OUTOUT MADE IN THE U.K. BY BLT INDUSTRIES LTD.MADE IN THE U.K. BY BLT INDUSTRIES LTD.
SERIAL NO.SERIAL NO.
008124B008124B
RAIN OR MOISTURE.RAIN OR MOISTURE.
EXPOSE THIS APPLIANCE TOEXPOSE THIS APPLIANCE TO
OR ELECTRIC SHOCK DO NOTOR ELECTRIC SHOCK DO NOT
TO REDUCE THE RISK OF FIRETO REDUCE THE RISK OF FIRE
WARNINGWARNING
SUPPLY VOLTAGESUPPLY VOLTAGE
POWER FUSEPOWER FUSE
QUALIFIED SERVICE PERSONELQUALIFIED SERVICE PERSONEL
INSIDE. REFER SERVICING TO INSIDE. REFER SERVICING TO
NO USER SERVICABLE PARTSNO USER SERVICABLE PARTS
SHOCK DO NOT REMOVE COVERSHOCK DO NOT REMOVE COVER
TO REDUCE THE RISK OF ELECTRICTO REDUCE THE RISK OF ELECTRIC
CAUTIONCAUTION
SAME TYPE AND RATINGSAME TYPE AND RATING
REPLACE ONLY WITHREPLACE ONLY WITH
CAUTIONCAUTION
WARNINGWARNING
THIS APPARATUS THIS APPARATUS
MUST BE EARTHEDMUST BE EARTHED
MAXIMUM POWER MAXIMUM POWER
CONSUMPTIONCONSUMPTION
HT FUSEHT FUSE
13
LC15R
1
10
11
12
13
14
15
The following hints and tips are provided so that you can get the best performance out of your Laney valve amplifier. These
are only guidelines and should be adapted for your preferances:-
1: Valve amplifiers take a short time to warm up to optimum operating temperature. To get optimum performance out of your
LC15/LC15R allow the amplifier to warm up for three mins. before beginning to play.
2: The position of an amplifier in a room has an effect upon the overall sound characteristics. If you wish to increase the bass
response of your amplifier, place the amplifier on the floor. If you wish to reduce the bass response of your amplifier, place
your amplifier on a stand.
3: Do not place you amplifier hard up against a wall as this will reduce the air circulating around the back of the unit and may
result in overheating.
910
~~
50 WATTS 50-60Hz50 WATTS 50-60Hz
220-240V220-240V
100-120V100-120V
~~~~
008124A008124A
T100mAT100mAT250mAT250mA T500mAT500mA
MODEL No. LC15MODEL No. LC15
LINELINE
OUTOUT MADE IN THE U.K. BY BLT INDUSTRIES LTD.MADE IN THE U.K. BY BLT INDUSTRIES LTD.
SERIAL NO.SERIAL NO.
008124B008124B
RAIN OR MOISTURE.RAIN OR MOISTURE.
EXPOSE THIS APPLIANCE TOEXPOSE THIS APPLIANCE TO
OR ELECTRIC SHOCK DO NOTOR ELECTRIC SHOCK DO NOT
TO REDUCE THE RISK OF FIRETO REDUCE THE RISK OF FIRE
WARNINGWARNING
SUPPLY VOLTAGESUPPLY VOLTAGE
POWER FUSEPOWER FUSE
QUALIFIED SERVICE PERSONELQUALIFIED SERVICE PERSONEL
INSIDE. REFER SERVICING TO INSIDE. REFER SERVICING TO
NO USER SERVICABLE PARTSNO USER SERVICABLE PARTS
SHOCK DO NOT REMOVE COVERSHOCK DO NOT REMOVE COVER
TO REDUCE THE RISK OF ELECTRICTO REDUCE THE RISK OF ELECTRIC
CAUTIONCAUTION
SAME TYPE AND RATINGSAME TYPE AND RATING
REPLACE ONLY WITHREPLACE ONLY WITH
CAUTIONCAUTION
WARNINGWARNING
THIS APPARATUS THIS APPARATUS
MUST BE EARTHEDMUST BE EARTHED
MAXIMUM POWER MAXIMUM POWER
CONSUMPTIONCONSUMPTION
HT FUSEHT FUSE
Laney
LC15 & LC15R manual

4: Connecting your guitar to either the 'HI' or 'LO' input has an effect on the sound regardless of the guitar type/pickup
configuration. The 'HI' socket provides more gain and extended treble, but with less bass. The 'LO' socket provides a full
range signal with extended low frequencies and lower gains. You should expermient with both inputs to find the one which
suits your guitar, style of playing and gives you the most tonally pleasing results.
5: When using the 'BRIGHT SWITCH' on an amplifier keep in mind that it has greater audible effect the lower the amount
of distortion produced by the preamplifier. At some distortion levels the 'BRIGHT SWITCH' may appear to have no effect at
all.
USEFUL HINTS AND TIPS
Laney
55
LC15 & LC15R manual
VALVE REPLACEMENT AND TROUBLE SHOOTING
The valves in your new valve amplifier will eventually need replacing due to wear, this is normal with valve amps. In most
instances you should be able to effect valve replacement yourself without incurring the costs of a service engineer. Following
are some of the most likely symptoms of valve malfunction and suggested methods of correction.
Normally valve amps give optimum performance when fitted with matched sets of output valves as factory fitted to all Laney
valve amps. NB: Damage will not occur by not fitting matched sets although the amplifiers performance may be impaired.
SYMPTOM 1
Amp connections have been performed correctly but power light fails to illuminate
SOLUTION 1
Check time delay POWER FUSE and replace if necessary
230V Time Delay 250MA
115V Time Delay 500MA
SYMPTOM 2
Power light illuminates - no sound output
SOLUTION 2
Check secondary HT fuse and if blown replace with T100MA
SYMPTOM 3
Secondary HT fuse (T100MA) blows repeatedly. This is a strong indication of a damaged output valve. The chart below
shows the valve layout and the function each performs
Laney
LC15 & LC15R manual
V5V5 V1V1V2V2V3V3
V4V4
V1 = First gain stage, ECC83
V2 = Second gain stage, ECC83
V3 = Phase splitter, ECC83
V4 = Output valve EL84
V5 = Output valve EL84

VALVE REPLACEMENT AND TROUBLE SHOOTING
Laney
66
TECHNICAL SPECIFICATIONS
SOLUTION 3
Replace the secondary fuse and turn on the power. View the output valves. IF one valve fails to light up, replace that valve.
If the output valves check out OK, another cause of a blown secondary fuse is a damaged preamplifier valve. Start with valve
V1 and replace it. Follow the above procedure. If the symptom persists, consult a qualified engineer, do not fit higher rated
fuses.
SYMPTOM 4
No preamplifier boost
SOLUTION 4
Replace preamplifier tubes V1, V2 or V3 or a combination
SYMPTOM 5
Slow loss of power
SOLUTION 5
Check first for damaged output valves (glowing, flashing or dead) by using the procedures described in solution 3.
All of these trouble shooting procedures can be performed quickly, without the aid of any sophisticated test gear. We suggest
that you always maintain spare valves for emergency purposes. Keep you Laney free of dirt, dust and moisture to prevent
performance failure. Never subject your amp to environmental conditions that would not be comfortable to you!
Should other customer service be necessary, contact your authorised Laney dealer or call Laney service direct.
Laney
Maximum power consumption: 30 Watts Supply voltage (Factory pre-set): 115/230 Volts Supply
Frequency: 50/60Hz Output power: 15 watts Input impedance Hi & Lo: 1 Meg Input sensitivity
Hi input: 100uV/-80dB Input sensitivity Lo input: 200uV/-74dB Line output level (nominal): 0dB
Line out impedance: 1K Ohm Speaker Impedance: 8 Ohms Speaker size: 10"/250mm Speaker
rating: 35 watts HxWxD (mm): 355x385x250
*In the intrest of continuing product developement BLT Industries reserve the right to amend specifications without prior notice.
In the interest of continued product development BLT Industries Ltd. Reserves the right to amend product specification without prior notification.
POWER TO THE MUSIC
Laney