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SCHEMATIC

THULCANDRA BOOST/OVERDRIVE

5

BAT46

1N

91

4

GND

1M

1N5817

100uF

1MB

10

kC

GND

250kB

10

0k

B

25kB

+9V

100n

VA

22k

22

k

47uF

GND

GND

VB

47

0n

10k

1M

VB

LM833

LM833

VA

GND

150pF

1N914

18

k

100n

1k

8

GND

4u

7

1n5

GND

GND

10

0n

47

0k

VB

2n

2

18

k

56n

10

uF

10

0k

2N5088

VB

VA

10

k

GND

10uF

470R

10

0k

GND

RP

D

D1

C12

1

2

3

GAIN

1

2

3

M

ID

BO

OS

T

1

2

3

TREBLE

VO

LU

M

E

1

2

3

1

2

3

BASS

IN

OUT

C14

R14

R1

5

C13

C1

R1

R2

IC1A

2

3

1

IC1B

6

5

7

8

4

C2

D2

D3

D4

D5

R3

C3

R4

C4

C5

C6

D6

D7

R5

C7

R6

C8

C1

0

R1

0

Q2

R1

1

C11

R12

R1

3

GND

1k

2

2N5088

VA

10

k

47

0k

VB

56n

GND

R7

Q1

R8

R9

C9

Summary of Contents for THULCANDRA

Page 1: ...T VERSION Xotic Soul Driven A mid gain overdrive with three different tone controls to fine tune the character Developed in collaboration with Allen Hinds as a signature effect Boost Overdrive 1 0 0 2...

Page 2: ...Bass knob varying the resistor in the R C filter to ground from the op amp clipping stage This has the effect of raising or lowering the bass cutoff frequency as well as changing the overall gain rati...

Page 3: ...tal film resistor 1 4W R14 22k Metal film resistor 1 4W R15 22k Metal film resistor 1 4W RPD 2M2 Metal film resistor 1 4W Input pulldown resistor LEDR 4k7 Metal film resistor 1 4W LED current limiting...

Page 4: ...088 is an equivalent IC1 LM833 Operational amplifier DIP8 IC1 S DIP 8 socket IC socket DIP 8 TREBLE 250kB 16mm right angle PCB mount pot BASS 25kB 16mm right angle PCB mount pot MID 10kC 16mm right an...

Page 5: ...1N914 18k 100n 1k8 GND 4u7 1n5 GND GND 100n 470k VB 2n2 18k 56n 10uF 100k 2N5088 VB VA 10k GND 10uF 470R 100k GND RPD D1 C12 1 2 3 GAIN 1 2 3 MIDBOOST 1 2 3 TREBLE VOLUME 1 2 3 1 2 3 BASS IN OUT C14 R...

Page 6: ...d frame jacks like the Switchcraft 111X Open frame jacks will not fit in layouts with 5 or more knobs due to the placement of the DC jack LED hole drill size assumes the use of a 5mm LED bezel availab...

Page 7: ...THULCANDRA BOOST OVERDRIVE 7 ENCLOSURE LAYOUT Enclosure is shown without jacks See next page for jack layout and wiring 125B...

Page 8: ...GRAM 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 fa...

Page 9: ...y 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 i...

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