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. Also, for rock and metal, it can be used before the lead channel of amplifier to make distor
Steps

Created by DHEA
Status: Active
Cfbfe5913a91eb0b73dda7d6f6ecab58?s=30

Designators and components Step 2 of 5

COMPONENT LIST (for TS808)

PCB
1 x  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        
OPAMP    2134    OPA2134PA OPA2134 2134 HI-PERF OP-AMP IC
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 Front

PCB Back

MODIFICATIONS AND EXPERIMENTATION

TS9

To build the TS9 version just replace the original components 

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

Operational Amplifiers

You can use many types of operational amplifiers. There are plenty of information and disccussion about the sound from different operational amplifiers on the internet. You can try for example:

2134    OPA2134PA OPA2134 2134 HI-PERF OP-AMP IC

4558     NJM4558 4558 DUAL OPERATIONAL AMPLIFIER GENERAL PURPOSE IC

TL072   TL072 LOW NOISE J-FET DUAL OP-AMP IC

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).

For more information about diode modifications please take a look to www.diystompboxes.com/cnews/mods.html

 

GENERAL DESCRIPTION OF COMPONENTS

Resistors
The resistors are ¼ Watt metal type. You can either use a multimeter or the color bands to obtain their values. Resistors don’t have polarity; you can assemble them in any direction.

Electrolytic capacitors
Electrolytic capacitors have the value printed on them. The polarity is also is marked for the negative lead, additionally the longer leg is the positive and shorter the negative. Assemble the electrolytic capacitor according with the positive polarity (+) marked in the PCB, that is, the longer leg of the capacitor is passed through the pad marked with +.

Polyester capacitors
The polyester capacitors have three numbers, read as picofarads (pF), the first two are the 1st and 2nd digits and the third is the multiplier code. This type of capacitors doesn’t have polarity; you can assemble them in any direction.

 

Diodes

Diodes have their type number marked on them. This two terminals component has polarity; a ring near the side indicates the cathode. This ring is marked as a line to indicate the correct polarity in 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.

  

Integrated Circuits
Integrated Circuits have their name and model printed on them. A notch half-circle or a dot indicates the correct position that the IC needs to be assembled on the PCB.

 

Potentiometer
Potentiometers can be mounted directly on the PCB. For a correct orientation, the potentiometer shaft is marked on the PCB.

 

Transistors
Transistors are three terminals components and their model and name are printed on them. To indicate the correct assembling position one side of the transistor is flat and the other one is round, in the same way, the PCB is marked with round and flat side.