Hand made, 30 watts, Tube Guitar Amplifier
Contents
1. ALLIGAT R A CLASS Hand made 30 watts Tube Guitar Amplifier Models AD 5200SA Single AD 5201SA Single AD 5202SA Single AD 5200TA Twin AD 5201TA Twin AD 5202TA Twin Congratulations on purchasing a tube guitar amplifier head and joining Laboga Family Thank you for your trust The Alligator series belongs to the world s top tube constructions It is designed with over 35 years of experience in creating and servicing 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 amplifier will satisfy all of your needs Enjoy playing DE Labo gt IMPORTANT Before using the amplifier for the first time read the instructions concerning safety measures carefully they are on page 5 and 6 Keep these instructions for the future TABLE OF CONTENTS AMPLIFIER SPECIFICATION use EE oo bo oo cad d 4 ANAPLIFIER FEATURES Sad ae tle feet un podala aee gre ta bo oa A po nh 5 WHATS IN SEHE SE see ee 5 SAFETY PRECAUTIONS See ee 6 TECHNICAL HINTS PROPER USAGE nhe nana nane sanas aa arra a Paene daa Dina 7 ERONT PANE RO yana ayau O AD nn seed io ceo wa a 8 RER PANEL sb rece Satan rau p unie ho i LEE aD dete er 12 CHANGE OF TUBES IN THE AMPLIFIER eene nennen nnn nennen nennen nun 14 How TO USE THE AMPLIFIER IN ORDER TO PROLONG TUBE S LIFE SPAN2. 15 TECHNICAL DATAE cost cede es 15 TROUBLESHOOTING GE acc cuota tt dot e eos eie Me o S dr t cer EC o eel o eee 16 WIRING AMPLIFIER TO SPEAKER CABINETS einnehmen eene mne nenne nere ta seinen 18 AMPLIFIER SPECIFICATION The Alligator series amplifiers are handmade and of full tube design From the very beginning it has been made and tested by musicians who are best aware of the guitarist s needs These I amplifiers are for guitarists that play classical types of music from jazz blues hard rock to even heavy metal The power stage is based on four EL84 tubes which give it an output power of 30 W Not only are these tubes reliable mechanically but also are characterized by creating a warm singing tube tone The Preamp is on two 12AX7 tubes One of the things that distinguish the EL84 tube is that you only need half of 12AX7 for the inverter while with EL34 or 6L6 you need to use all of it Despite of the preamp having only two tubes the amplifier is capable of creating a wide spectrum of tones The master section of the amplifier has been designed so that when playing at low volume the tone quality is maintained This section is also equipped with a spring reverb The amplifier has two channels clean and distorted On the clean channel exists the possibility of obtaining a crunch sound and the distorted channel offers possibilities from crunch to even a high gain sound Additionally the distorted channel offer
3. 15 14 9 4 3 24 23 222419 18 17 8 7 6 5 2 1 Page 8 1 Channel selection Switch to change channels of the amplifier It works only when Jack is unplugged from the Footswitch socket In position up the clean channel is on whereas in position down the distorted channel is on 2 Footswitch Socket to connect a footswitch with controlled Channel 3 1 switching and Gain selecting TRS Jack socket T tip 1 R ring 2 S sleeve 3 where tip changes channels ring changes masters sleeve is ground It uses stereo cable which can be also replaced by mono cable however then the Gain switch will not be active and in the amplifier only potentiometer Gain 2 will be active Input Input jack socket to connect to the guitar Bright High frequency boost for the clean channel Clean Volume Volume of the clean channel HINT At a low setting of this potentiometer you get a clean sound When you boost the clean potentiometer you get sound that is more saturated until some crunch is achieved When you turn the Master down and boost the Clean you obtain more crunch So you can get crunch on both channels which at the same time differ in character and dynamics 6 Gain 1 7 8 9 Gain control for 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 Hum
4. all output 26 tubes work In the 15W the amp works with half output power Then only two output tubes work HINT You should keep the switch in the Standby position if there are long breaks between playing You should also wait about 1 min between switching to the Standby and turning the amplifier off Power This switch turns the mains of the amplifier on or off The amplifier is off when the switch is in position up then the lamp 24 is not illuminated The amplifier is on when the switch is in position ON the switch is illuminated in red In this position the amplifier does not play but tubes are hot and you can change channels HINT Before turning the amplifier on always make sure that the Standby switch is in position up it will extend the life span of the tubes The amplifier should be turned on in the following way first turn on the Power switch and wait about 1 minute Next you can turn the Standby in one of directions The turning off procedure works the other way around First turn the amp into the Standby then wait about 1 minute afterward you can turn the Power off Page 11 REAR PANEL 1 ATTENTION CAUTION LT VAN Main fuse integrated with power supply socket Slo Blo fuse T1 6A is in the case integrated with power supply lt Maj socket There is one fuse spare fuse inside Pap e fusa HINT Take out the power cord during a storm or when unused fo
5. and try to change channels 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 17 WIRING AMPLIFIER TO SPAKER CABINETS 4 ohm cabinet 8 ohm cabinet Ohm SPEAKER OUTPUT 16 ohm cabinet 40hm 8 Ohm 16 Oh 8 ohm cabinet 16 ohm cabinet Page 18 Use only one output at the same time Never use this device without speaker connected 4 Ohm 8 Ohm 16 Ohm SPEAKER OUTPUT 16 ohm cabinet 16 ohm cabinet 4 Ohm 8 Ohm 16 Ohm SPEAKER OUTPUT 8 ohm cabinet 8 ohm cabinet 16 ohm cabinet 5 ohm cabinet Page 19 ALL RIGHTS RESERVED 2009 LABOGA Page 20
6. the amplifier which bypasses the effects loop HINT This input can also be used as line input therefore the amplifier serves as a power amp Effects loop socket Send Output signal socket taken from the preamplifier Nominal signal output level is OdBV HINT This output always has signal even if the loop is not used Consequently the outlet can be used to connect a guitar tuner permanently it does not influence the sound Power output socket for a 4 ohm impedance cabinet Power output socket for an 8 ohm impedance cabinet Power output socket for a 16 ohm 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 output Socket Page 13 CHANGE OF TUBES IN THE AMPLIFIER Positions of tubes in the amplifier FRONT FUNCTION first preamp tube second preamp tube power tubes Hints concerning tubes Leave tube change and bias setting for qualified personnel Tubes could get heated intensively If you touch them you can get burnt That is why before you change tubes turn amplifier off take the plug out and wait for them to cool down Before you change tubes pay attention if their pins are straight because the feet have to be positioned in a certain way The first sign informing that tubes should be changed is worse sound of the amplifi
7. the outer metal cover in any of the power tubes is glowing red it is usually grey If yes immediately turn the amplifier off and contact authorized Laboga service or any Laboga retailer Page 16 While playing there are weird Check if the power cable is inserted properly and if it isn t falling out sounds crackle or the of the socket Additionally check the quality of the speaker s cable sounds vanish completely if it isn t damaged and if the cable has the proper diameter The amplifier gives Observe if it happens on both channels this information can be uncontrollable weird loud crucial while consulting the service department Unplug the guitar sounds even if guitar is and switch to the distorted channel watch if sounds cease when unplugged you mute Lead Gain e 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 Unplug the cable from the Footswitch
8. use another If it still doesn t help contact Laboga service personnel or any Laboga retailer Immediately unplug the amplifier from the mains outlet and contact authorized Laboga service personnel or any Laboga retailer Don t repair it yourself Check if guitar cable is connected and if guitar cabinet works properly Then check if guitar s volume potentiometer Master or other potentiometers having influence on amplifier s volume aren t mute If the above mentioned hints fail unplug the amplifier from main outlet wait at least 1 minute and check if anode fuse isn t blown If the fuse is blown change it for a new one 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 put guitar cable to the Return socket at the back of the amplifier and check if you can hear the guitar e If you do check if any of preamp tubes aren t broken by swapping them If there is still no result contact authorized Laboga service or any Laboga retailer If you can t hear the guitar contact authorized Laboga service or any Laboga retailer Check if Lead Gain or Lead Volume isn t mute If not unplug the amplifier from the mains electric supply wait for the tubes to cool down unscrew rear grate and change V2 If there are no results contact authorized Laboga service or any Laboga retailer Check if
9. bucker pick ups and high output signal it is possible that turning the knob to the right does not cause more distortion It only gives more noise of the amplifier It is designed that way because each guitar has a different output signal level and the value of gain was set up that way that in the case of guitars with less signal it is also possible to get more distortion Gain 2 Second gain control for the distorted channel which is only available when the footswitch is used This is a duplicate of Gain 1 They both can be set independently and selected with the use of a footswitch HINT This potentiometer can be used to boost distortion e g while soloing To achieve such effect set Gain 2 knob in such a way that after switching from Gain 1 the more distortion is heard Drive Volume Distorted channel volume Proportions between clean and distorted channel can be set by this potentiometer Bright High frequency boost for distorted channel Apart from high frequency boost the switch also changes distortion character It is possible that using certain controls of equalizer or gain high frequency boost will be less noticeable Page 9 Only for the Single version 10 Bass Adjusts the low freguency tone for both channels Middle Adjusts the middle frequency tone for both channels Treble Adjusts the high frequency tone for both channels HINT Set all the potentiometers in a 12 00 o c
10. er The sound gets flat and the dynamics are worse There are certain signs that imply tubes should be changed red outer metal cover which is normally gray flashes inside the tube or other unusual signs Use only new tubes Power tubes should all be changed at the same time for a quartet of EL84 tubes It is a pentode which is characterized by having a longer life span and is more mechanically reliable than EL34 for example A quartet 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 hums may appear when all the knobs are set to the right position and the amplifier is on the distorted channel Page 14 HOW TO USE THE AMPLIFIER IN ORDER TO PROLONG TUBES LIFE SPAN 1 The amplifier should always be switched on in the following way first turn Power on and wait for 1 minute Then you can turn the Standby Switching the amplifier off is the other way around first turn Standby off then wait 1 minute then you can turn power off 2 Always use a matched guartet of power tubes from Laboga or renowned producers 3 Before transporting the amplifier wait for the amplifier especially for the tubes to cool down 4 When you don t use the amplifier it is advisable to regulate Standby to position 0 5 An excessive amount of dust on the tubes may decrease heat distribution of the tub
11. es which could shorten tubes life span Use an original Laboga cover or hard case to prevent damage and dust TECHNICAL DATA INPUTS e Guitar input sensitivity 10 dBV e Maximum signal level 4 dBV Input impedance 1 MO OUTPUTS e Power output impedance 4 Q output impedance 8 A output impedance 160 output impedance e Output power 30W 15W rms Balanced line signal level output 3 dBV EFFECTS LOOP e Effects Loop Send output level 0 dBV e Effects Loop Send output impedance 100 Q e Effects Loop Return output level 0 dBV e Effects Loop Return output impedance 470 kQ TUBES e Preamp section two 12AX7 e Power section four EL84M POWER SUPLY e 230V AC 50Hz mains fuse SloBlo T1 6A 250V e 110V AC 60Hz mains fuse SloBlo T3 15A 250V Maximum power consumption 184 VA CASE Alligator AD5200 Alligator AD5201 Alligator AD5202 e Dimensions 670 x 275 x 250 e Dimensions 490 x 270 x 450 e Dimensions 670 x 278 x 515 e Weight 21 kg e Weight 29 kg e Weight 37 kg Page 15 TROUBLESHOOTING SYMPTOM RECOMMENDED INTERVENTION The amplifier doesn t play LED diodes aren t lit control light isn t lit There is smoke coming out of the amplifier The amplifier doesn t play but LED diodes are lit Clean channel works but the distorted channel is mute The amplifier makes hum even after turning Master down Check if the main fuse isn t blown or if the power supply cord isn t broken
12. lock position then adjust them individually to get the best sound Remember that the frequencies of each controller are related to each other the change of one influences the others EQ Mod Shift of equalizers band for both channels HINT Provides various EQ frequencies for both positions of the switch It results in a shift of frequencies of the Middle filter and a change in low tones In both settings of the EQ Mod you get an entirely different sound of the amplifier and various EQ functions The most radical change of sound may be obtained especially in a less Middle knob setting Only for the Twin version Bass Adjusts the low frequency tone for the clean channel Middle Adjusts the middle frequency tone for the clean channel 16 17 18 19 20 21 Treble Adjusts the high frequency tone for the clean channel HINT Set all the potentiometers in a 12 00 o clock position then adjust them individually to get the best sound Remember that the frequencies of each controller are related to each other the change of one influences the others Bass Adjusts the low frequency tone for the distorted channel Middle Adjusts the middle frequency tone for the distorted channel Treble Adjusts the high frequency tone for distorted channel HINT Set all the potentiometers in a 12 00 o clock position then adjust them individually to get the best sound Remember
13. luded Direct Out line level output with speaker simulation speaker outputs 4 Q 8 Q 16 Q Celestion G12H Heritage combo only WHAT IS IN THE SET Footswitch Channel Gain Cable connecting footswitch and amplifier stereo Power supply cable Owner s manual Warranty Page 5 SAFETY PRECAUTIONS ATTENTION ATTENTION To reduce the risk of electrical shock do not CAUTION remove the back cover of the amplifier Inside parts can be TT CT 1 repaired only by gualified service personnel WARNING TO PREVENT THE RISK OF FIRE a AND SHOCK HAZARD DON T EXPOSE WARNING To prevent the risk of electrical shock do not THIS APPLIANCE TO MOISTURE OR RAIN i i i i i i TO OREVENT RISK OEEIRE REG AEE expose this appliance to moisture rain or any liquid WITH THE SAME RATE AND TYPE FUSE REFER SERVICING TO QUALIFIED PERSONEL This symbol is intended to This symbol alerts the user to the alert the user to the presence presence of important operating of dangerous voltage and and maintenance instructions constitutes a risk of electrical shock K C Be cautious while transporting the cabinet ATTENTION Amplifier produces high volume levels Staying in places of high volume levels could cause permanent hearing 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 Lab
14. oga cable Way of sound and volume signal cables Using improper speaker cables could cause damage to the amplifier Do not use the amplifier in humid and dusty places Do not operate the amplifier through the unearthed socket Leave the amplifier and bias settings to qualified personnel Tubes could get heated intensively do not touch it or it could cause burning Do not leave the apparatus in the vicinity of children Unplug the amplifier before tube change unplug the cord and wait for the tubes to cool down Before changing the fuse switch the amplifier off and unplug the cord Also make sure you use the fuse of the proper power 1 Keep this instruction for the future use Page 6 TECHNICAL HINTS PROPER USAGE e avoid using the amplifier in humid and dusty places e do not put it in an unstable place e do not install the apparatus near any heat sources e donot use the amplifier before connecting it to the correct cabinet e after switching on wait about 30 60 seconds until tubes get heated e Switch the amplifier off before any cable change e in order to ensure proper air circulation do not block any of the ventilation openings e never put any liquid containers near the amplifier e in case of any objects or liquid access inside the amplifier urgently switch the apparatus off and unplug the power supply cord e protect the amplifier from any strikes e before transporting wait about 10 minutes for the tubes
15. r a longer period of time HINT While changing the fuse make sure the blades of the fuse are properly installed ATTENTION CAUTI mur 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 fuse for one of the same value 2 Additional footswitch socket An additional footswitch not included can be connected to this socket It controls bypass of the effects loop and reverb When the effects loop is bypassed the Return socket is not active But the Send socket is active look at hint in point 5 The proper footswitch effects Loop Reverb can be bought from any Laboga dealer Page 12 3 The additional footswitch CIL socket is in TRS form T tip 1 R ring 2 S Sleeve 3 where the tip activates the bypass of the effects loop the ring CL TI turns the reverb off and the sleeve is ground Balanced line output with guitar speaker s emulation Balanced output with OdBV line level where the signal is taken from speaker transformer through guitar speaker emulation HINT Output can be used to connect the amplifier directly to a mixer or other devices ATTENTION This output can t be used without a speaker or fake load dummy load connected to power output socket 4 Effects loop socket Return Inserting a plug into this socket brakes internal connection in
16. s the possibility of having two independent gains potentiometer Gain 1 and Gain 2 controlled by a footswitch For example the player may set Gain 1 for less distortion than Gain 2 which with the help of a footswitch allows for an easy transition between the two during a solo This channel offers a wide variety of tones from classic rock and roll to hard rock hardcore even metal Combo versions AD5201 Single and AD5201 Twin have one and AD5202 Single and AD5202 Twin have two Celestion G12H speakers from the Heritage series which are connected to the amplifier with a thick speaker cable with a jack plug The player may disconnect the internal speaker and connect an external cabinet even of a different impedance because the amplifier has outlets of 4 Ohms 8 Ohms and 16 Ohms impedance Page 4 AMPLIFIER FEATURES power 50W tubes used 4 x EL84 2 x 12AX7 two channels clean and distorted volume control clean channel gain and volume controls distorted channel two separately controlled with a footswitch Gain1 and Gain2 separate tone control for both channels with separate switches for EQ mod type Twin the same tone control for both channels sharing the switch for EQ Mod type Single footswitch changes channels and switches between Gain 1 and Gain 2 channel switching on relays separate Bright switches for both channels series effects loop with true bypass controlled by a footswitch not inc
17. that the frequencies of each controller are related to each other the change of one influences the others EQ Mod Shift of equalizer s band for the clean channel EQ Mod Shift of equalizer s band for the distorted channel HINT Provides various EQ frequencies for both positions of the switch It results in a shift of frequencies of the Middle filter and a change in low tones In both settings of the EQ Mod you get an entirely different sound of the amplifier and various EQ functions Page 10 22 23 24 25 Reverb Control of the spring reverb effect level Master Volume Master volume control HINT Besides controlling the volume it influences saturation of the clean channel Therefore when turned down to a lower level a crunch sound can be obtained on the clean channel Lamp indicator When glowing the amplifier in on HINT There is a 12V bulb under the cover which can be unscrewed without taking the chassis out If the light needs to be replaced turn the amplifier off unscrew the metal nut gently push the bulb in and turn left at the same time until the bulb comes free from the holder Stand By Power selector In position Standby in the middle the amplifier is ready to work Changing it to positions 15W or 30W sends anode voltage to the tubes in these positions the amplifier plays In the 30W mode the amplifier works with full output power then
18. to cool down e always use a dry or slightly wet cloth to wipe all dust Never use solvents to clean e use additional devices and accessories according to producer s recommendations e during storms or when left unused for a long period of time power supply cord should be unplugged from the outlet Crossed out wheeled bin symbol implies that in EU countries after use product must be discarded separately in a special adjusted place It concerns both the apparatus itself as well as other accessories bearing this symbol Do not discard such products together with unsorted communal wastes In EU countries there are special systems of collecting used electrical products Transporting used electrical products in certain adjusted places prevents their being harmful to the environment and people s health LABOGA Adam Laboga ul Partyzantow 35 2 51 675 Wroclaw Polska www laboga pl We reserve the right to introduce any technical changes and the changes to this amplifier s image This instruction is actual once it has been printed ALL RIGHTS RESERVED 2009 LABOGA Page 7 FRONT PANEL Single version 3 5 6 7 8 10 11 12 22 23 24 25 26 15W POWER s e IN D i d k d 30 W ON KO NW W wA CLASS pA UBE AMPLIFIER EQ MOD 26 25 13 9 4 3 Fre SOW TUBE AMPLIFIE er S 24 23 22 12 110 8 7 6 5 2 1 Twin version 3 5 6 7 8 14 15 162022 23 24 25 26 1 2 4 9 17 18 19 21 26 25 2016
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