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RUNOFFGROOVE UBE SCREAMER

9

LICENSE & USAGE

No direct support is offered for these projects beyond the provided documentation.

 It’s assumed 

that you have at least some experience building pedals before starting one of these. Replacements and 
refunds cannotbe offered unless it can be shown that the circuit or documentation are in error. 

All of these circuits have been tested in good faith in their base configurations.

 However, not all the 

modifications or variations have necessarily been tested. These are offered only as suggestions based 
on the experience and opinions of others.

Runoffgroove circuit licensing

Runoffgroove circuits have special licensing that is different from standard Aion FX projects.

 These 

projects are for personal use only and may not be used for commercial endeavors 

without approval 

from Runoffgroove. Here are the terms of use from their site:

runoffgroove.com projects are provided free-of-charge to builders for personal, non-commercial use. We do offer 
licensing for builders who wish to sell pedals based on, in whole or in part, our projects. As part of the licensing 
agreement, the builder must clearly state that the circuit was developed by runoffgroove.com, both in promotional 
literature and on the circuit board. If you see a pedal for sale that seems to be based on a runoffgroove.com project 
and does not credit us, the builder may not be officially licensed by us and therefore, not compensating us as the 
developer. Please contact us with the information and we will investigate the situation. Thank you.

DOCUMENT REVISIONS

1.0.0 (2022-04-08)

  

Initial release.

Summary of Contents for UBE SCREAMER

Page 1: ...MMARY DOCUMENT VERSION Runoffgroove UBE Screamer An original design from Runoffgroove with the goal of reproducing the sound of the Tube Screamer with CMOS gain stages CMOS overdrive 1 0 0 2022 04 08 BUILD DIFFICULTY Easy Actual size is 2 3 x 1 86 main board and 1 78 x 0 87 bypass board ...

Page 2: ... Aion FX implementation of the UBE adds two modifications a clipping diode switch and a second switch to change out the global feedback resistor The original Runoffgroove article recommends selecting this resistor for based on whether you ll be using single coil pickups or humbuckers so we took the step of putting it on a switch so the pedal can be used in any scenario without heating up the solde...

Page 3: ...tal film resistor 1 4W R14 220k Metal film resistor 1 4W R15 330R Metal film resistor 1 4W Power supply filter resistor RPD 2M2 Metal film resistor 1 4W Input pulldown resistor Can be as low as 1M LEDR 4k7 Metal film resistor 1 4W LED current limiting resistor Adjust value to change LED brightness C1 10n Film capacitor 7 2 x 2 5mm C2 2n2 Film capacitor 7 2 x 2 5mm C3 470n Film capacitor 7 2 x 3mm ...

Page 4: ...B 16mm right angle PCB mount pot VOL 100kA 16mm right angle PCB mount pot CLIP SPDT Toggle switch SPDT on on Can also use a center off switch to add diode lift mode untested FREQ SPDT cntr off Toggle switch SPDT on off on LED 5mm LED 5mm red diffused IN 1 4 stereo 1 4 phone jack closed frame Switchcraft 112BX or equivalent OUT 1 4 mono 1 4 phone jack closed frame Switchcraft 111X or equivalent DC ...

Page 5: ...0k 470n 1M 100n 100k 1n5 10k GND 500kB 100k 150pF 100n 100k 100n 330k 680k 150k 220k 100n GND VA GND 100n GND VA 100pF RPD D1 C11 IN OUT C13 DRIVE 1 2 3 VOLUME 1 2 3 IC1D 10 9 IC1E 12 11 IC1C 6 7 IC1F 15 14 IC1B 4 5 IC1A 2 3 IC1P VDD VSS 8 1 R15 C1 R1 R2 C2 R3 R4 R5 C3 R6 C5 R7 C6 R8 TONE 1 2 3 R9 C7 C8 R10 C9 R11 R12 R13 R14 C10 D2 D3 D4 D7 D5 D6 FREQ 2 3 1 CLIP 2 3 1 C12 C4 GND ...

Page 6: ...rame 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 LED bezel available from several parts suppliers Adjust size accordingly if using something different such as a 3mm bezel a plastic bezel or just a plain LED x 0 65 y 1 71 x 0 65 y 1 71 ø9 32 ø9 32 x 0 85 y 0 66 ø...

Page 7: ...RUNOFFGROOVE UBE SCREAMER 7 ENCLOSURE LAYOUT Enclosure is shown without jacks See next page for jack layout and wiring 125B ...

Page 8: ...RUNOFFGROOVE UBE SCREAMER 8 WIRING DIAGRAM 125B IN V GND N C N C OUT PCB IN GND V V JACK GND JACK OUT IN GND GND PCB OUT ...

Page 9: ... FX projects These projects are for personal use only and may not be used for commercial endeavors without approval from Runoffgroove Here are the terms of use from their site runoffgroove com projects are provided free of charge to builders for personal non commercial use We do offer licensing for builders who wish to sell pedals based on in whole or in part our projects As part of the licensing ...

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