Lithium Grim Merlin Building Instructions Download

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Merlin v1.1

Manufacturer and product names are mentioned solely for circuit identification, and where applicable their trademarks are the
property of their respective owners who are in no way associated or affiliated with the author. No cooperation or endorsement

is implied.

Components

Name Value

Comment

Name Value

Comment

47n

MKT/SMF

2M2

1% metalfilm

100p

Silver mica

510k

1% metalfilm

39n

MKT/SMF

3k3

1% metalfilm

MKT/SMF

3k3

1% metalfilm

10n

MKT/SMF

1k5

1% metalfilm

MKT/SMF

3k3

1% metalfilm

47u

Electrolyte 16V+

3k3

1% metalfilm

47u

Electrolyte 16V+

8k2

1% metalfilm

150n

MKT/SMF

10k

1% metalfilm

C10

4n7

MKT/SMF

R10

330R

1% metalfilm

1N4148

R11

Jump

1N4148

A500k/A1M Gain

1N4148

A10k

Boost

1N4148

A50k

Bass

1N4001

A10k

Boost Tone

IC1

JRC4559

A50k

Treble

SW1

3PDT

Boost footswitch

A10k

Volume

SW2

SPDT

Soft Clipping

SW3

DP3T (ON/OFF/ON) Additional diodes J1

Jump

Tim/timmy

SW4

DP3T (ON/OFF/ON) Feedback loop

PCB layout

A=Log, B=Lin, C=Rev. Log

Summary of Contents for Merlin

Page 1: ...Merlin Building instructions V1 1 ...

Page 2: ...tions 6 Softclipping 6 Additional diodes 6 Diodes and Op amp 6 Feedback loop 7 Lovepedal OD11 Fout Bladwijzer niet gedefinieerd Off board wiring 9 Effects loop 12 Troubleshooting 13 Schematic 14 Read this entire manual thoroughly before you start building the effect Especially the modification part Decide before building the effect which version and mods you want to try so that you do not need to ...

Page 3: ...MF R3 3k3 1 metalfilm C4 1u MKT SMF R4 3k3 1 metalfilm C5 10n MKT SMF R5 1k5 1 metalfilm C6 1u MKT SMF R6 3k3 1 metalfilm C7 47u Electrolyte 16V R7 3k3 1 metalfilm C8 47u Electrolyte 16V R8 8k2 1 metalfilm C9 150n MKT SMF R9 10k 1 metalfilm C10 4n7 MKT SMF R10 330R 1 metalfilm D1 1N4148 R11 Jump D2 1N4148 P1 A500k A1M Gain D3 1N4148 P2 A10k Boost D4 1N4148 P3 A50k Bass D5 1N4001 P4 A10k Boost Tone...

Page 4: ... or higher 100p 1 Silver Mica or Ceramic Disc 16V or higher Diodes Value Amount Type 1N4001 1 1N4148 4 7 minimal 4 maximum 7 see modifications section LED 1 Red 3mm LED 1 Orange 3mm only for Tim IC Value Amount Type JRC4559 1 Socket using a DIP 8 socket Resistors Value Amount Type 330R 1 metal film 1 1k5 3 2 for LED s metal film 1 3k3 6 metal film 1 8k2 4 metal film 1 10k 2 metal film 1 510k 2 met...

Page 5: ... of lead wire Do not short J1 for the OD11 and Zen Drive R11 is only used for the Zen Drive short it for the OD11 Tim and Timmy Now solder the diodes and then the resistors Again If you want to socket the diodes then skip them and instead solder the sockets for the diodes Note Diodes are fragile Do not expose them to heat for too long or they ll break Do not blow on your solder in an attempt to co...

Page 6: ... to solder it to the pads of SW2 To SW2 Additional diodes You can have different choices for your diode switching SW3 is used standard only for the Timmy but can also be added to the Tim as a mod Here is the diagram for the original wiring for the Timmy using 2 DPDT switches There is no specific order in which you need to solder it to the pads of SW3 To SW3 To SW3 Diodes and Op amp You can use oth...

Page 7: ... using 2 DPDT switches you can replace them by only one DP3T ON OFF ON switch to make use of 2 of the 3 switch options of the standard wiring To SW3 To SW3 Feedback loop SW4 is an optional feedback loop mod using a DP3T ON OFF ON that can be added to all versions Although the drawing might suggest to use ceramic disc capacitors you can use any type you want Note there is also an added 47k resistor...

Page 8: ...16V R7 3k3 1 metalfilm C8 47u Electrolyte 16V R8 10k 1 metalfilm C9 NC R9 8k2 1 metalfilm C10 NC R10 NC D1 1N4148 R11 Jump D2 1N4148 P1 A500k Drive D3 1N4148 P2 NC D4 1N4148 P3 A50k Bass D5 1N4001 P4 NC IC1 JRC4558 P5 A5k Tone P6 A10k Level SW1 4 NC J1 NC Zen Drive Name Value Comment Name Value Comment C1 470n MKT SMF R1 2M 1 metalfilm C2 100p Silver mica R2 470k 1 metalfilm C3 NC MKT SMF R3 1k 1 ...

Page 9: ...onboard diode section For the Zen Drive you will have to use a separate diode clipping PCB sold separately or build your own using a vero board Feel free to experiment with different diodes and configurations You can use the SW3 connection to add any clipping configuration either by using a switch or by connecting a separate clipping diode PCB or vero The diode configuration for the Zen Drive and ...

Page 10: ...The rectangle pad marks pin 1 of a potentiometer The images below show how you can recognize which pin is which on a potentiometer PS P3 is wired in reverse so for P3 only connect pin 3 to the square pad instead of pin 1 You can break off the pin I marked with the yellow circle with a small pair of pliers P1 is a A500k for Tim and a A1M for the Timmy If you want to incorporate the effects loop of ...

Page 11: ... the Tim you will need to add the boost switch In the original the boost potentiometer has a built in switch but you can also use a footswitch with a LED to see if the boost is engaged or not Anode long leg Cathode short leg R led The LEDs requires a resistor R led in the diagram depending on the type of LED you are using An ultra bright red green or blue LED requires a 3k3 resistor diffuse Green ...

Page 12: ...he property of their respective owners who are in no way associated or affiliated with the author No cooperation or endorsement is implied 12 Effects loop The Tim also uses an external effects loop consisting of a mono jack and a switching mono jack like this The loop is connected as follows Return Tip S Sleeve Tip Switch Sleeve Send ...

Page 13: ...tly and or soldered correctly on the board Check that you oriented the capacitors IC s transistors and diodes the right way SMF MKT and ceramic capacitors as well as resistors do not need to be oriented Check if you used the correct values of the components For resistors you can look here http www diyaudioandvideo com Electronics Color Double and triple check your soldering A loose or cold solder ...

Page 14: ... are mentioned solely for circuit identification and where applicable their trademarks are the property of their respective owners who are in no way associated or affiliated with the author No cooperation or endorsement is implied 14 Schematic ...

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