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While playing there are weird 
sounds – crackle, or the 

sounds vanish completely

Check if the power cable is inserted properly and if it isn’t falling out 
of the socket. Additionally, check the quality of the speaker’s cable 

– if it isn’t damaged and if the cable has the proper diameter.

The amplifier gives 

uncontrollable weird, loud 
sounds even if guitar is 

unplugged.

Observe if it happens on both channels (this information can be 

crucial while consulting the service department). Unplug the guitar 
and switch to the distorted channel – watch if sounds cease when 

you mute 

Lead Gain

:

If yes, unplug the amplifier from the main power supply, wait 
for the tubes to cool down, unscrew the rear grate and change 
V1 for any other tube. If the problem disappears, keep such 
tube configuration.

If sounds don’t fade, turn the 

Lead Volume 

down and check if 

sounds disappear. If yes, unplug the amplifier from the mains 
electric power, wait for the tubes to cool down, unscrew the rear 
grate and change V2 for V3 or V4. If it doesn’t, turn the 

Master 

down. It could happen that sounds won’t stop even after turning 
the 

Master

 down - then contact authorized Laboga service and 

tell about your observations

Footswitch won’t change 

channels

Unplug the cable from the 

Footswitch

 and try to change channels;

If channels can be changed, then plug in another footswitch 
cable  to the amplifier. It should be a “stereo” cable. You can 
also plug in a “mono” cable, but the 

Master

 in the footswitch will 

not be active and only 

Master 2

 will work.

If that doesn’t help, contact authorized Laboga service or any 

Laboga retailer.

Page 

16

Summary of Contents for AD 5300

Page 1: ...Hand made 50 watts Tube Guitar Amplifier Models AD 5300 head AD 5301 combo USER S MANUAL...

Page 2: ...icing top quality equipment Wide correction possibilities of the amplifier will enable each individual to find their own sound and will ensure long hours of creative entertainment We hope the amplifie...

Page 3: ...5 WHAT IS IN THE SET 5 SAFETY PRECAUTIONS 6 TECHNICAL HINTS PROPER USAGE 7 FRONT PANEL 8 REAR PANEL 11 CHANGING TUBES IN THE AMPLIFIER 12 HOW TO USE THE AMPLIFIER IN ORDER TO PROLONG TUBE S LIFE SPAN...

Page 4: ...th overdrive channel though you get tones from crunch to high gain This channel also has two independent gain knobs switchable using footswitch For instance you can then set the Gain 1 at lower values...

Page 5: ...n knobs controlled with a footswitch Gain1 and Gain2 the same tone control for both channels footswitch changes channels and switches between Gain 1 and Gain 2 channel switching on relays separate Bri...

Page 6: ...ng loss To avoid electrical shock never open the amplifier s cover In case of failure refer servicing to qualified personnel Always use the highest quality signal cables we recommend Laboga cable Way...

Page 7: ...use solvents to clean use additional devices and accessories according to producer s recommendations during storms or when left unused for a long period of time power supply cord should be unplugged f...

Page 8: ...FRONT PANEL Combo version Head version Page 8...

Page 9: ...the distorted channel HINT With a little value you can obtain crunch effect or overdrive By adding gain distortion is added until reading high gain For guitars with Humbucker pick ups and high output...

Page 10: ...from the holder 15 Stand By In position up the amplifier is ready to work Changing it to positions ON sends anode voltage to the tubes in these positions the amplifier plays HINT You should keep the s...

Page 11: ...sure the blades of the fuse are properly installed ATTENTION Before you change the fuse always unplug the amplifier from the power outlet and wait for at least one minute ATTENTION Always change the...

Page 12: ...impedance cabinet ATTENTION Do not connect the cabinets with different impedance at the same time ATTENTION Before turning the amplifier on make sure the cabinet is connected to the appropriate power...

Page 13: ...uartet of power tubes like any other tubes can be purchased in a Laboga service It is recommended to use V1 and V2 with low noise and or low microphonics Because the amplifier has high sensitivity hum...

Page 14: ...op Send output impedance 100 Effects Loop Return output level 0 dBV Effects Loop Return output impedance 470 k TUBES Preamp section two 12AX7 Power section four EL84M POWER SUPLY 230V AC 50Hz mains fu...

Page 15: ...e turn the amplifier on again and observe the tubes for any unusual signs If after you the change it it blows again contact authorized Laboga service or any Laboga retailer If the fuse wasn t blown pu...

Page 16: ...hange V1 for any other tube If the problem disappears keep such tube configuration If sounds don t fade turn the Lead Volume down and check if sounds disappear If yes unplug the amplifier from the mai...

Page 17: ...CONNECTIONS Page 17...

Page 18: ...Page 18...

Page 19: ...Page 19...

Page 20: ...ALL RIGHTS RESERVED 2010 LABOGA Page 20...

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