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SCHEMATIC

COMET VINTAGE DISTORTION

6

GND

2M

2

1N5817

100uF

10

0k

B

GND

10

0k

B

25

kB

+9V

100n

VA

100R

10k

10

k

VB

47uF

GND

GND

1k

47

n

47

0k

VB

2N5088

VA

10

k

47

n

10

0k

GND

GND

2N5088

470k

250pF

OM

IT

10

k

VA

22

R

GND

470n

10

0k

47k

1N

91

4

GND

VA

GND

10

0k

250pF

4k

7

1uF

GND

2k2

47

0n

10n

6k8

22

n

2k2

6k

8

100n

10k

47

n

1M

VB

2N5088

VA

10

k

1k

1u

F

GND

10

0k

GND

VB

VB

VB

VB

VB

VB

VB

IN

OUT

RP

D

D1

C15

1

2

3

DI

ST

OR

TI

ON

LE

VE

L

1

2

3

TO

NE

1

2

3

C16

R23

R21

R2

2

C14

R1

C1

R2

Q1

R3

C2

R4

Q2

R5

C3

C4

D2

D3

R6

R7

C5

R8

R9

D4

IC1B

6

5

7

8

4

NJM3404AD

IC1A

2

3

1

R1

0

C6

R1

1

C7

R12

C8

D5

D6

D7

D8

D9

D1

0

CL

IP

2

3

1

C9

R13

C1

0

R14

R1

5

C11

R16

C1

2

R1

7

Q3

R1

8

R19

C1

3

R2

0

GND

Summary of Contents for COMET

Page 1: ...UMENT VERSION BOSS DS 1 Distortion A classic distortion pedal that has been in continuous production for over 40 years blending ideas from the Big Muff RAT and Distortion Distortion 1 0 0 2021 10 22 B...

Page 2: ...ame time reducing the bass and lowering the clipping threshold slightly The result is that there is a significant difference between the pre 1994 and post 1994 versions of the circuit The pre 94 versi...

Page 3: ...tor 1 4W R11 4k7 Metal film resistor 1 4W R12 2k2 Metal film resistor 1 4W R13 6k8 Metal film resistor 1 4W R14 2k2 Metal film resistor 1 4W R15 6k8 Metal film resistor 1 4W R16 10k Metal film resisto...

Page 4: ...mm red diffused Q1 2N5088 BJT transistor NPN TO 92 Substitute Original uses 2SC2248 Q2 2N5088 BJT transistor NPN TO 92 Substitute Original uses 2SC2248 Q3 2N5088 BJT transistor NPN TO 92 Substitute Or...

Page 5: ...roviding more contrast between the up and down positions IC selection The DS 1 has undergone a few other minor circuit changes after the major revision in 1994 mostly related to the IC 1994 2000 Rohm...

Page 6: ...14 GND VA GND 100k 250pF 4k7 1uF GND 2k2 470n 10n 6k8 22n 2k2 6k8 100n 10k 47n 1M VB 2N5088 VA 10k 1k 1uF GND 100k GND VB VB VB VB VB VB VB IN OUT RPD D1 C15 1 2 3 DISTORTION LEVEL 1 2 3 TONE 1 2 3 C1...

Page 7: ...e 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 8: ...COMET VINTAGE DISTORTION 8 ENCLOSURE LAYOUT Enclosure is shown without jacks See next page for jack layout and wiring 125B...

Page 9: ...RAM 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 far...

Page 10: ...as suggestions based on the experience and opinions of others Projects may be used for commercial endeavors in any quantity unless specifically noted No attribution is necessary though a link back is...

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