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5

L5 PREAMP

Parts

Resistors

R1

280k 

1

R2

1M 

1

R3

4M7

R4

1k

R5

22k

R6

33k

R9

220k

R10

10k

R11

18k

R18

27k

R19

27k

R20

18k

R22

18k

R23

18k

R24

18k

R25

18k

R26

1k5

R27

1k5

R29

2k2

R30

2k2

R32

24k

R34

22k

R35

2k2

R36

100k

R37

22k

R38

270k

R39

390R

R40

22k

R41

300k

R42

430R

R43

22k

R44

240k

R45

390R

R46

22k

R47

300k

R48

560R

R49

22k

R50

220k

R51

390R

R52

22k

R53

150k

R54

300R

Resistors

R55

6k8

R56

39k

R57

10k

R59

15k

R60

1k

R66

18k

R68

330R

R70

470k

R72

220R

R73

10k

R74

3k3

R76

100k

R77

15k

R78

220R

R79

220R

R81

10M

R82

820R

R83

22k

R84

6k8

R87

22k

R88

3k3

R89

2k7 1/2W

R90

33k

R91

10k

R92

10k

R93

47k

R94

47k

R95

680R 1/2W

R96

100k

R97

10k

R98

1k5

R99

6k8

RX1

2k

RX2

47k

RX5

680R 1/2W

RX6

680R 1/2W

RX7

100k 

2

RX8

100k 

2

RX9

100k 

2

RPD

1M to 2M2

Capacitors

C1

10n

C2

10n

C3

8n2

C4

10n

C5

1n2

C6

220n

C7

47n

C10

4n7

C11

4n7

C12

68n

C13

2n2

C14

68n

C15

68n

C16

10n

C17

10n

C18

15n

C19

15n

C20

10n

C21

10n

C22

8n2

C23

8n2

C24

4n7

C25

4n7

C26

4n7

C27

4n7

C28

4n7

C29

4n7

C32

10n

C33

10n

C34

220pF 

MLCC

C35

330n

C36

68n

C37

100pF 

MLCC

C38

2u2 

electro

C39

10uF 

electro

C40

2u7 

tantalum

C41

10n

C42

4u7 

electro

Summary of Contents for L5 Preamp

Page 1: ...curately with a template you may not be ready for this one yet 4 YOU VE GOT TO BUILD IT AS IT WAS INTENDED I approached the project as though I was designing a completed product for market Everything...

Page 2: ...output straight into a power amp either a dedicated power amp or the return jack of an amp with an effects loop The main difference will be the volume you run it at This thing is capable of enormous v...

Page 3: ...is a patented Moog invention that uses a set of six fixed frequency resonant filters to add a very unique quality to an instrument signal that is unlike any other guitar effect sometimes described by...

Page 4: ...rovided only as a convenience You are responsible for checking through the parts to make sure they are the ones you want and Mouser is responsible for sending you the correct parts I tried to pick hig...

Page 5: ...220R R73 10k R74 3k3 R76 100k R77 15k R78 220R R79 220R R81 10M R82 820R R83 22k R84 6k8 R87 22k R88 3k3 R89 2k7 1 2W R90 33k R91 10k R92 10k R93 47k R94 47k R95 680R 1 2W R96 100k R97 10k R98 1k5 R99...

Page 6: ...resistors so the values have been modified but it is electrically identical 2 Optional I included these three resistors as an experiment to see if the inevitable LED switch noise could be cut down by...

Page 7: ...f the output with a multimeter black lead to the sleeve red lead to the tip The measurement was around 20mV AC I ended up at the 23 4dB setting in the app to get 30mV This probably varies widely depen...

Page 8: ...than 10mA but they are required if you want to test out the power section before inserting the ICs and transistors which is a good idea and they barely draw any power so you may as well leave them in...

Page 9: ...GND 22k 560R GND 390R 300R GND GND 22k 22k 22k 6k8 39k 18k GND GND 10n GND 100n 2M2 GND 10n 10n GND GND C11 C12 1 2 3 MID2 2 3 1 IC5A 6 5 7 IC5B 2 3 1 IC4A R24 R23 R25 R22 R27 R26 1 2 3 FREQUENCYA 1...

Page 10: ...k GND 15k 10n 6k8 33k GND CA3080 1k GND 470k 220R 10k 20k 220pF GND V 10n GND 2N5088 2N5088 3k3 2k 47k V 330R 10n GND 330n GND 100k 68n 2N5457 V CA3080 6k8 15k V 10M GND 820R 100pF 220R 220R GND GND V...

Page 11: ...the placement of the pots switches and other hardware inside the enclosure looking in from the bottom 1590X VOL1 2 5kA TREBLE1 50kA VOL2 25kA TREBLE2 25kB MULTI 25kA MASTER 25kA MID1 2 5kA BASS1 50kA...

Page 12: ...y reasonable so do whichever you think is best For always on LED operation run a wire from the CH pad on the channel switching board the one on the right hand side in the diagram above looking from th...

Page 13: ...ure to secure it while drilling Note that the holes are shown slightly smaller than they need to be so drill out the holes as shown and then step up until they are the correct size for the components...

Page 14: ...s is about 50 bigger than life size The main PCB measures 5 35 x 3 5 The smaller PCB on the left is the master bypass and the one on the right is the channel switching These both inclode on board LEDs...

Page 15: ...x later After it s soldered clip off the excess length of the leads 2 Note on soldering the toggle switch es It will require a good amount of solder to fill the pads Try to be as quick as possible to...

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