Tubescreamer

The Tubescreamer is probably the most built overdrive pedal in the DIY community. The pedal has a characteristic mid-boosted tone perfect for soft rock and blues.
Steps

Created by DHEA
Status: Active
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Designators and components Step 2 of 5

COMPONENT LIST (for TS808)

PCB
PCB       Tubescreamer PCB

Capacitors        
C1      22n      22NF 0.022UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR 
C2      1u        1UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C3      47n      47NF 0.047UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C4      50p      50PF 50V CERAMIC DISC CAPACITOR
C5      220n    220NF 0.22UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C6      220n    220NF 0.22UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C7      1u        1UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C8      100n    100NF 0.1UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C9      10u      10UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
C10    100u    100UF 35V 105C RADIAL ELECTROLYTIC CAPACITOR 6X11MM
C11     47u     47UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 6X11MM

Diodes        
D1     1N4148    1N4148 SWITCHING SIGNAL DIODE
D2     1N4148    1N4148 SWITCHING SIGNAL DIODE
D3     1N4001    1N4001 DIODE 1A 50V

IC        
IC1     NJM4558    NJM4558D DUAL OPERATIONAL AMPLIFIER
(Socket     SOCKET IC 8 PIN)

Transistors        
Q1    2N3904    2N3904 NPN GENERAL PURPOSE TRANSISTOR
Q2    2N3904    2N3904 NPN GENERAL PURPOSE TRANSISTOR

Resistors        
R1      1M       1M OHM 1/4W 1% METAL FILM RESISTOR
R2      1k        1K OHM 1/4W 1% METAL FILM RESISTOR
R3      510k    510K OHM 1/4W 1% METAL FILM RESISTOR
R4      10k      10K OHM 1/4W 1% METAL FILM RESISTOR
R5     10k       10K OHM 1/4W 1% METAL FILM RESISTOR
R6      4.7k     4.7K OHM 1/4W 1% METAL FILM RESISTOR
R7      51k      51K OHM 1/8W 1% METAL FILM RESISTOR
R8      1k        1K OHM 1/4W 1% METAL FILM RESISTOR
R9      10k      10K OHM 1/4W 1% METAL FILM RESISTOR
R10     220     220 OHM 1/4W 1% METAL FILM RESISTOR
R11     1k       1K OHM 1/4W 1% METAL FILM RESISTOR
R12     1k       1K OHM 1/4W 1% METAL FILM RESISTOR
R13     510k   510K OHM 1/4W 1% METAL FILM RESISTOR
R14     10k     10K OHM 1/4W 1% METAL FILM RESISTOR
R15     100     100 OHM 1/4W 1% METAL FILM RESISTOR
R16     10k     10K OHM 1/4W 1% METAL FILM RESISTOR
R17     10k     10K OHM 1/4W 1% METAL FILM RESISTOR
R18     10k     10K OHM 1/4W 1% METAL FILM RESISTOR

Potentiometers        
GAIN    500k-A    500K OHM LOGARITHMIC TAPER POTENTIOMETER
TONE    20k-W     20K OHM W-TAPER W20K TONE CONTROL POTENTIOMETER
VOL      100k-A    100K OHM LOGARITHMIC TAPER POTENTIOMETER

 

PCB

 

PCB SCHEMATIC

 

MODIFICATIONS

TS9

Replace the following components to build the TS9 version

C11   4.7u    4.7UF 35V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
R15   470    470 OHM 1/4W 1% METAL FILM RESISTOR
R16    100k    100K OHM 1/4W 1% METAL FILM RESISTOR

OP Amp

Use an 8-pin socket and replace different operational amplifiers: LM833, OP275, TL072NE5532...

Diodes

You can obtain different types of distortion by changing the diodes. The germanium diodes (1N60, 1N270 or 1N34A) will produce softer distortion, the silicon (1N914 or 1N4148) harder and the leds more fuzz and crunch. You can also experiment with different combinations (symmetric o asymmetric).

GENERAL DESCRIPTION OF COMPONENTS

Resistors

Use a multimeter or the color bands to obtain the resistance value. Resistors do not have polarity, you can place them in any direction.

Electrolytic capacitors

Electrolytic capacitors have their value printed on them. The negative polarity pin is indicated by a white strip along the can. They also have a longer leg indicating the positive pin. The maximum voltage rating never can be exceeded, make sure you are using at least double voltage rating than your power supply. For example, if you are using a 9V power supply, use a electrolytic capacitor with at least 18V maximum voltage rating.

Polyester capacitors

Polyester capacitors have their value marked with three numbers. Read as picofarads (pF), the first two are the 1st and 2nd digits and the third is the multiplier code. These capacitors do not have polarity, you can place them in any direction.

Ceramic capacitors

Ceramic capacitors have their value marked with three numbers. Read as picofarads (pF), the first two are the 1st and 2nd digits and the third is the multiplier code. These capacitors do not have polarity, you can assemble them in any direction.

Integrated Circuits

Integrated Circuits (ICs) have their model printed on them. A notch half-circle or a dot indicates the correct position on the PCB.

Diodes

Diodes have their model printed on them. The polarity (cathode) is indicated by the ring near the side. This ring is also marked on the PCB.

Led diodes

Led diodes have polarity, the cathode is indicated as a flat surface on the side of the diode and also it is the shorter led. On the PCB, the cathode is marked as a flat side and anode as a round side.

Potentiometers

Potentiometers have their resistance value marked on them. They are marked with A, B or C for logarithmic, linear and reverse logarithmic, respectively.