Project · Distortion
Roland™ Bee Baa™ Distortion Replica
This is a Roland™ Bee Baa™ replica project. This project is from the from the GEO Site (note: this external site does not use a secure HTTPS connection), called the Baa Baa. Any trademarks mention on this page belong to their rightful owners and not to General Guitar Gadgets
Project files
Everything you need to build it
BeeBaa Replica Ready-For-Transfer to Printed Circuit Board - For use only if you are a complete DIY person who wants to etch and drill your own PCB. Otherwise, we recommend you ignore this PCB mask and buy the Ready-to-Solder Printed Circuit Board or Complete Kit from the links below.
What you will need
Bill of Materials
Version 2012October30 · Copyright 2007 JD Sleep · Permission refused for posting/serving this file from any site other than www.generalguitargadgets.com · Trademarks are property of their owners
Resistors
| Resistor ID | Value | 3-band Marking | 4-band Marking |
|---|---|---|---|
| R1 | 1k | brown-black-red | brown-black-black-brown |
| R2 | 10k | brown-black-orange | brown-black-black-red |
| R3 | 1k | brown-black-red | brown-black-black-brown |
| R4 | 100k | brown-black-yellow | brown-black-black-orange |
| R5 | 18k | brown-gray-orange | brown-gray-black-red |
| R6 | 1k | brown-black-red | brown-black-black-brown |
| R7 | 10k | brown-black-orange | brown-black-black-red |
| R8 | 1k8 (1.8k) | brown-gray-red | brown-gray-black-brown |
| R9 | 100k | brown-black-yellow | brown-black-black-orange |
| R10 | 15k | brown-green-orange | brown-green-black-red |
| R11 | 10k | brown-black-orange | brown-black-black-red |
| R12 | 1k5 (1.5k) | brown-green-red | brown-green-black-brown |
| R13 | 100k | brown-black-yellow | brown-black-black-orange |
| R14 | 15k | brown-green-orange | brown-green-black-red |
| R15 | 10k | brown-black-orange | brown-black-black-red |
| R16 | 1k5 (1.5k) | brown-green-red | brown-green-black-brown |
| R17 | 33k | orange-orange-orange | orange-orange-black-red |
| R18 | 10k | brown-black-orange | brown-black-black-red |
| R19 | 47k | yellow-violet-orange | yellow-violet-black-red |
| R20 | 47k | yellow-violet-orange | yellow-violet-black-red |
| R21 | 22k | red-red-orange | red-red-black-red |
| R22 | 220k | red-red-yellow | red-red-black-orange |
| R23 | 10k | brown-black-orange | brown-black-black-red |
| R24 | 47k | yellow-violet-orange | yellow-violet-black-red |
| R25 | 68k | blue-gray-orange | blue-gray-black-red |
| R26 | 100k Audio Potentiometer (Boost Control) | ||
| R27 | 100k Audio Potentiometer (Sustain Control) | ||
| R28 | 100k Audio Potentiometer (Tone Control) | ||
| R29 | 100k Audio Potentiometer (Volume Control) | ||
| R30 | 1k | brown-black-red | brown-black-black-brown |
Capacitors
| Capacitor ID | Value | Type | Possible Marking |
|---|---|---|---|
| C1 | 1µF | Aluminum Electrolytic | 1µF |
| C2 | 47µF | Aluminum Electrolytic | 47µF |
| C3 | 100pF | Ceramic | 101 |
| C4 | 10µF | Aluminum Electrolytic | 10µF |
| C5 | 1µF | Aluminum Electrolytic | 1µF |
| C6 | 1µF | Aluminum Electrolytic | 1µF |
| C7 | 0.0047µF | Film or Ceramic | 472 |
| C8 | 1µF | Aluminum Electrolytic | 1µF |
| C9 | 1µF | Aluminum Electrolytic | 1µF |
| C10 | 0.0047µF | Film or Ceramic | 472 |
| C11 | 10µF | Aluminum Electrolytic | 10µF |
| C12 | 1µF | Aluminum Electrolytic | 1µF |
| C13 | 0.0022µF | Film or Ceramic | 222 |
| C14 | 0.0022µF | Film or Ceramic | 222 |
| C15 | 0.1µF | Film | 104 |
| C16 | 0.0068µF | Film or Ceramic | 682 |
| C17 | 0.022µF | Film or Ceramic | 223 |
| C18 | 47µF | Aluminum Electrolytic | 47µF |
Potentiometers
| Part ID | Value | Type |
|---|---|---|
| R10 - Boost Control | 100k | Log (or Audio) Taper |
| R10 - Sustain Control | 100k | Log (or Audio) Taper |
| R10 - Tone Control | 100k | Log (or Audio) Taper |
| R10 - Volume Control | 100k | Log (or Audio) Taper |
Other
| Part ID | Part Name |
|---|---|
| D1 | LED |
| Q1 | 2N5089 (or other NPN BJT Transistor) |
| Q2 | 2N5089 (or other NPN BJT Transistor) |
| Q3 | 2N5089 (or other NPN BJT Transistor) |
| J1 | Stereo quarter-inch jack |
| J2 | Mono quarter-inch jack |
| J3 | DC Jack |
| B1 | 9 volt battery (not included in the Kit) |
| Sw1 | Heavy Duty 3PDT foot switch |
| Sw2 | DPDT Toggle or Foot Switch |
| Sw3 | SPDT Toggle Switch 9v battery snap, Printed Circuit Board, 24 gauge stranded wire, Enclosure, Knobs |
How to build it
Instructions
Version 2013November13 · Copyright 2013 JD Sleep · Permission refused for posting/serving this file from any site other than www.generalguitargadgets.com · Trademarks are property of their owners
The RolandTM BeeBaaTM is basically a fuzz tone with a booster section. This gives you a good sounding clean boost and distortion/fuzz in one package. Follow the general instructions. You'll need to solder tack C17 and R25 to the lugs of the potentiometers as shown in the diagram. Bend and trim the leads on the cap and resistor and fit them in and then solder them into the lugs along with the wires that are attached to those lugs. Here is a photo of the inside that can be used for reference. Note that this was a prototype and the transistors have sockets. The sockets are not included in the kit.
Here is a chart of voltages taken at the transistor pins. This information can be used to help you find and fix problems if your BEE BAA doesn't work when you test it.
Component
Location
9 volt power supply Q1
Voltage
9.0v
Collector
4.9v
Base
1.4v
Emitter
0.7v
Q2
Q3
Collector
5.5v
Base
1.2v
Emitter
0.6v
Collector
5.5v
Base
1.2v
Emitter
0.6v
More about this project
Notes, sounds and related links
Ready to build? We have the kit.
Buy a Bee Baa™ Complete Kit. Includes all the parts and materials you need to build one, all for about the price you would pay for a PCB and parts.
Would you like a Ready to Solder Circuit Board for this project?
