Difference between revisions of "BF-2"
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[[Boss]] BF-2 Flanger. "The purple one." | [[Boss]] BF-2 Flanger. "The purple one." | ||
| + | |||
| + | The Boss BF-2 Flanger is no longer being made. | ||
| + | |||
| + | |||
| + | ; Thermionic Studios has one (1) Boss BF-2 available for rental. | ||
==Controls== | ==Controls== | ||
| Line 22: | Line 27: | ||
| − | ==Phase Inversion:Unknown== | + | ==Phase Inversion: Unknown== |
This is a rather unusual schematic. Instead of putting the correct symbol in the schematic for the modulation ICs, they've just drawn actual ICs. We also can't tell the electrical polarity of the ICs that are opamps because "2" and "3", and "6" and "5" are not indicative. We'll have to go looking for the opamps to better understand. To the best of our knowledge, most, but not all opamps have negative on pins 2 and 6, and positive on 3, and 5, but not always. As with other pedals, we'll have to put this on an oscilloscope to make sure whether it inverts phase or not. | This is a rather unusual schematic. Instead of putting the correct symbol in the schematic for the modulation ICs, they've just drawn actual ICs. We also can't tell the electrical polarity of the ICs that are opamps because "2" and "3", and "6" and "5" are not indicative. We'll have to go looking for the opamps to better understand. To the best of our knowledge, most, but not all opamps have negative on pins 2 and 6, and positive on 3, and 5, but not always. As with other pedals, we'll have to put this on an oscilloscope to make sure whether it inverts phase or not. | ||
| Line 29: | Line 34: | ||
! Schematic ID || Electronic Part || Action || Phase State | ! Schematic ID || Electronic Part || Action || Phase State | ||
|- | |- | ||
| − | | Q1 || | + | | Q1 || TBD || Does Not Invert || Original Phase* |
|- | |- | ||
| IC1b || X || X || X | | IC1b || X || X || X | ||
| Line 35: | Line 40: | ||
| IC2b || X || X || X | | IC2b || X || X || X | ||
|- | |- | ||
| − | | Q2 || | + | | Q2 || TBD || Does Not Invert || X |
|- | |- | ||
| IC3 || X || X || X | | IC3 || X || X || X | ||
| Line 41: | Line 46: | ||
| IC4 || X || X || X | | IC4 || X || X || X | ||
|- | |- | ||
| − | | Q3 || | + | | Q3 || TBD || Does Not Invert || X |
|- | |- | ||
| IC2a || X || X || X | | IC2a || X || X || X | ||
|- | |- | ||
| − | | Q4 || | + | | Q4 || TBD || Does Not Invert || X |
|- | |- | ||
| IC1a || X || X || X | | IC1a || X || X || X | ||
|} | |} | ||
| − | On the schematic there are additional opamps and transistors, but they're | + | On the schematic there are additional opamps and transistors shown, but they're controlling the modulation and power of the oscillator IC (seen very center). Those remaining transistors and opamps aren't touching the sound signal directly, and so do not affect the signal phase in the pedal. |
==Schematic== | ==Schematic== | ||
| Line 57: | Line 62: | ||
==Artists== | ==Artists== | ||
<div style="column-count:3;-moz-column-count:3;-webkit-column-count:3"> | <div style="column-count:3;-moz-column-count:3;-webkit-column-count:3"> | ||
| − | * | + | * Fast Eddie Clarke |
| + | * Joe Satriani | ||
| + | * Johnny Marr | ||
| + | * Kurt Cobain | ||
| + | * Jason Newsted | ||
| + | * Robert Smith | ||
</div> | </div> | ||
| + | |||
---- | ---- | ||
;Additional Sources | ;Additional Sources | ||
| − | + | # https://sites.google.com/site/cctsim/home/boss-bf-2-callibration - How to calibrate your BF-2 Flanger | |
| + | # https://equipboard.com/items/boss-bf-2-flanger | ||
| + | # https://www.freeinfosociety.com/media.php?id=677 | ||
[[Category:Pedals]] | [[Category:Pedals]] | ||
Latest revision as of 08:53, 19 November 2020
Boss BF-2 Flanger. "The purple one."
The Boss BF-2 Flanger is no longer being made.
- Thermionic Studios has one (1) Boss BF-2 available for rental.
Controls
Image from Mass Street Music
- Knob 1 - "Manual":
- Knob 2 - "Depth":
- Knob 3 - "Rate":
- Knob 4 - "Res": (Resonance)
- Footswitch 1 - "On/Off": This switch toggle the pedal effect off and on.
Bypass:Buffered/True
Like all Boss pedals, the BF-2 Flanger has a buffered bypass.
General Information
Pedal Manual
Phase Inversion: Unknown
This is a rather unusual schematic. Instead of putting the correct symbol in the schematic for the modulation ICs, they've just drawn actual ICs. We also can't tell the electrical polarity of the ICs that are opamps because "2" and "3", and "6" and "5" are not indicative. We'll have to go looking for the opamps to better understand. To the best of our knowledge, most, but not all opamps have negative on pins 2 and 6, and positive on 3, and 5, but not always. As with other pedals, we'll have to put this on an oscilloscope to make sure whether it inverts phase or not.
| Schematic ID | Electronic Part | Action | Phase State |
|---|---|---|---|
| Q1 | TBD | Does Not Invert | Original Phase* |
| IC1b | X | X | X |
| IC2b | X | X | X |
| Q2 | TBD | Does Not Invert | X |
| IC3 | X | X | X |
| IC4 | X | X | X |
| Q3 | TBD | Does Not Invert | X |
| IC2a | X | X | X |
| Q4 | TBD | Does Not Invert | X |
| IC1a | X | X | X |
On the schematic there are additional opamps and transistors shown, but they're controlling the modulation and power of the oscillator IC (seen very center). Those remaining transistors and opamps aren't touching the sound signal directly, and so do not affect the signal phase in the pedal.
Schematic
© Copyright 1980, Roland Corporation.
Artists
- Fast Eddie Clarke
- Joe Satriani
- Johnny Marr
- Kurt Cobain
- Jason Newsted
- Robert Smith
- Additional Sources
