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SCHEMATIC

ANDROMEDA CLASSIC OVERDRIVE

7

1N5817

100uF

GND

+9V

100n

VA

33k

2N5457

1M

GND

15K

15

K

GND GND

3k

3

GND

68

n

2k7

10

k

22n

GND

12

0p

250kA

82n

1k5

82

0R

12K

1k

8

2n7

GND

39K

10K

82n

1n

12

k

GND

GND

22n

5k

1

43

K

25kB

27n

10

0n

8n

2

2N5088

15

0K

3k

3

2k2

GND

GND

1k2

20K

10

K

560p

4k7 8n2

GND

22K

5k1

4n

7

82n

1k

2

50

kA

15

0K

15

0K

GND

JRC4558D

JRC4558D

JRC4558D

JRC4558D

GND

GND

GND

47

0n

47uF

50

kC

1u

F

47uF

GND

GND

GND

VA

VA

VA

VA

VB

VB

VB

VB

VB

VB

VB

2u

2

2u

2

1uF

2u2

D1

C22

IN

OUT

C25

R1

Q1

R2

R27

R2

8

R3

C1

R4

R5

C2

C3

GAIN

1

2

3

C4

R8

R7

R9

R6

C7

R10

R11

C8

C9

R1

2

C10

R1

3

R1

8

SPECTRUM

1

2

3

C11

C1

2

C1

3

Q2

R1

5

R1

6

R14

R17

R20

R1

9

C14

R21

C15

R22

R23

C1

6

C17

R2

4

LE

VE

L

1

2

3

R2

5

R2

6

2

3

1

IC1A

6

5

7

IC1B

8

4

2

3

1

IC2A

6

5

7

IC2B

8

4

D3

D2

C2

0

D5

D4

C23

BA

SS

1

2

3

C2

1

C24

C6

C1

9

C18

C5

D7

D6

JU

M

PE

R

GND

Summary of Contents for ANDROMEDA

Page 1: ...DOCUMENT VERSION Nobels ODR 1 Natural Overdrive A unique overdrive pedal whose complex drive tone earns it a spot on the pedalboards of many Nashville studio musicians Overdrive 1 0 2 2020 10 29 BUILD...

Page 2: ...st Ibanez Boss circuits This is German engineering at its finest tons of odd value resistors and capacitors forming very precise filters and signal shaping This is not a particularly simple build but...

Page 3: ...al film resistor 1 4W R9 12K Metal film resistor 1 4W R10 39K Metal film resistor 1 4W R11 10K Metal film resistor 1 4W R12 12k Metal film resistor 1 4W R13 5k1 Metal film resistor 1 4W R14 2k2 Metal...

Page 4: ...acitor 7 2 x 2 5mm C18 1uF Film capacitor 7 2 x 3 5mm C19 2 2uF Film capacitor 7 2 x 5mm C20 470n Film capacitor 7 2 x 3 5mm C21 1uF Film capacitor 7 2 x 3 5mm C22 100uF Electrolytic capacitor 6 3mm P...

Page 5: ...t LEVEL 50kA 16mm right angle PCB mount pot SPECT 25kB 16mm right angle PCB mount pot BASS 50kC 16mm right angle PCB mount pot Modification Turn it all the way up for the stock ODR 1 circuit LED 5mm L...

Page 6: ...e way up it s exactly like the stock ODR 1 circuit If for some reason you do want to leave off this control you can jumper pins 2 and 3 of the Bass pot to eliminate it entirely Clipping Diodes The ODR...

Page 7: ...n 1k2 50kA 150K 150K GND JRC4558D JRC4558D JRC4558D JRC4558D GND GND GND 470n 47uF 50kC 1uF 47uF GND GND GND VA VA VA VA VB VB VB VB VB VB VB 2u2 2u2 1uF 2u2 D1 C22 IN OUT C25 R1 Q1 R2 R27 R28 R3 C1 R...

Page 8: ...se of closed frame jacks like the Switchcraft 111X If you d rather use open frame jacks please refer to the Open Frame Jack Drill Template for the top side LED hole drill size assumes the use of a 5mm...

Page 9: ...ANDROMEDA NATURAL OVERDRIVE 9 ENCLOSURE LAYOUT Enclosure is shown without jacks See next page for jack layout and wiring 125B...

Page 10: ...AGRAM 125B IN V GND N C N C OUT PCB IN GND V V JACK GND JACK OUT IN GND GND PCB OUT Shown with optional 9V battery If battery is omitted both jacks can be mono rather than one being stereo Leave the f...

Page 11: ...thers Projects may be used for commercial endeavors in any quantity unless specifically noted No attribution is necessary though a link back is always greatly appreciated The only usage restrictions a...

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