855 Drive
BYOC 855 Drive. The 855 Drive represents a Tube Screamer clone (a well established overdrive pedal) with twice the level of overdrive of a conventional Tube Screamer. For those of us liking what a Tube Screamer can do to a guitar signal into an amp, this is a welcome tonal upgrade.
Thermionic Studios has purchased this kit to build this pedal. We are in the process of building the pedal and will have more to report upon completion.
Controls
- Knob 1 - "Level": This knob sets the output volume of the pedal. Turning the knob clockwise increases the volume.
- Knob 2 - "Drive": This knob sets the overdrive level of the pedal. Turning the knob clockwise increases the overdrive.
- Knob 3 - "Tone": This knob is a treble-bleed style tone control. Full clockwise is full treble. Turn counter-clockwise to remove highs from the signal.
- Footswitch 1 - "On/Off": This switch turns the 855 Drive on or off.
General Information
Build your own clone is one of the first online businesses to create kits to allow people to solder up and assemble their own effects pedals.
http://byocelectronics.com/855instructions.pdf
The 855 Drive is very similar to the Cusack Screamer from Cusack Music. The Cusack Screamer also boasts of a Tube Screamer pedigree with twice the amount of available overdrive as compared to a conventional Ibanez Tube Screamer or Maxon OD-9.
The 855 Drive is powered by either a 9-volt battery, or by means of a 9-volt AC adapter.
Phase Inversion
From our examination of the schematic below, the 855 Drive appears to not invert phase on the output as compared with the signal that goes into the pedal.
| Electronic Part | Action | Phase State |
|---|---|---|
| Q1 | Does not Invert | Buffered-in Original Phase |
| IC1a | Inverts | Inverted |
| IC1b | Inverts | Reverted |
| Q2 | Does not Invert | Buffered-Out Reverted Phase |
This conclusion will need to be born out by testing and observation.
Pedal Manual
As of this time, BYOC has not issued a separate manual on how to use the pedal. The best reference is either this wiki page, or the instruction manual (linked above in General Information) at Buildyourownclone.com which describes the architecture of, and how to build the pedal.
Schematic
- Additional Sources
