Onerr FAT BOY User manual

User Guide
Guide de l'Utilisateur
Manual do Usuário
EFFECTS
FAT BOY

2
Product Overwiew
Thank you for choosing an Onerr product.
The wah wah effect was made popular by the most
influential guitar players of the late 60s.
The Fat Boy wah wah was designed
to be used with guitar and bass,
and with its modern design and solid
construction it will give years and
years of outstanding performance.
The Mode selector switch extends the
variety of curves at your choice
(LOW - MID - HIGH) and the TRUE BYPASS
switch keeps your guitar tone unaffected while
working in by-pass mode.
ENGLISH

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Powering
To connect a battery in your wah wah pedal, simply remove the plastic cover located on the bottom plate.
Use alkaline batteries for longest battery life.
This pedal is supplied without a battery installed to prevent
this unit against leaking. A 9 volts battery (not included)
must be installed if you are not using the optional power
supply.
For AC operation, use a 9 volt, regulated DC power supply,
100 mA minimum. The optional factory power supply is
available from Onerr: Onerr model PA-21.
1 - Connect your guitar cord into the wah wah
"INSTRUMENT" jack.
2 - Connect a cord from the wah wah "AMPLIFIER"
jack into your amplifier input jack.
You can also send the wah wah "AMPLIFIER" cord to
other effect devices and last to your amplifier input jack.
Power supply specification:
Output: DC 9 v 100 mA
Negative center

4
Bass Guitar
AC Adaptor
Out
In
In
OutIn
In
Wah Wah
Fat Boy
Effects
Conecting
Amplifier

5
Selecting a wah wah mode
High - This position moves the wah filter to the high range of the guitar.
Notes on the G, B, and E strings will be accentuated. This setting is perfect
for leads or funky staccato chords.
Mid: Tunes the wah to cover the entire range of the guitar. In this mode, the filter is not so “peaky” and is a good
choice with clean guitars when you want a smooth and wide sweep. This mode also works well with distorted
rhythm chords and riffs.
Low: Moves the filter down to accentuate the lower strings of the guitar. This setting is perfect for use with
7-string guitars and bass guitars.
The Fat Boy with others effects:
In most cases, the best results will be achieved by putting effects in this order:
Before Fat Boy: Compressor and Overdrive.
After Fat Boy: Overdrive, Chorus, Delay, Reverb, Flanger, Phaser, Pitch Shifter, Octave, Tremolo.
SelectionSelection
WAHWAH
Low
Mid
High

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Experiment with the mode selector in each position to find a tone to your taste. Bear in mind that different
pickups will respond in different ways in each mode setting.
When placing the pedal in a fixed position, you will get a boost in a particular frequency. You can use that to add
sustain and create a feedback of a particular overtone.
Tip: To avoid unexpected mechanical “pops” when changing modes, switch the pedal to BYPASS position.
Try also connecting your wah wah pedal after your effect pedals. The wah wah effect sounds different when used
after distortions and overdrives, compared with when it is used before them.
These connections won't cause any damage to your equipment, so don't be afraid and experiment!
To turn the wah wah effect ON, push the toe of the pedal all of the way down until your hear or feel a click.
A wah wah effect is an active sweepable bandpass filter.
With the heel down, low frequencies will be more accentuated. With the toe down, high frequencies will be more
accentuated.
To turn your wah wah pedal OFF, just push the toe of the pedal all of the way down until you hear or feel a little
click. This indicates that now you are working in bypass mode.

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Warning
The input jack also serves as a power switch. Power is turned on when an instrument plug is inserted into the input jack and
is it turned off when disconnected. When this unit is not in use you should disconnect any cord connected to the input jack.
Care and Maintenace:
Use a soft, dry cloth for external cleaning. Do not use chemical products, which may damage its rubber and plastic parts.
The CB-01 wah wah pedal uses an internal long life potentiometer that controls the sweep of the wah wah filter.
It may eventually present unexpected noises due to dust and dirt accumulation. A “scraping” sound will become audible
through your amplifier.
If you experience this problem, try cleaning the potentiometer with a spray contact cleaner.
Just remove the back aluminum cover for potentiometer access. Apply a fine spray of electronic contact cleaner with
lubricant directly inside the potentiometer. Move pedal back and forth to ensure penetration of cleaner.
Put the aluminum plate back and test the pedal.
If the results are unsatisfactory, seek authorized service for potentiometer replacement.
Notes:
Only use reliable cords to connect your pedals.
Before powering your pedals, make all necessary linking connections. If you need to change any connection, do not forget to turn
the power off in order to prevent any possible damage to your units.
Only use regulated adaptors for best performance.
Do not worry if you accidentally change the input to output cord. This will not damage your unit. Just turn the power off and
reconnect it correctly.

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Turn the power off and remove the AC adaptor from the
outlet if any of the following conditions occur:
- The AC adaptor cord has been cut or damaged.
- This unit has been exposed to rain or some liquid has
penetrated the unit.
- This product does not appear to operate normally or
presents some change in performance.
Do not use or store this product in places that are:
- Dusty,
- Humid or Damp
- Subject to very high (such as sunlight or near heating
equipment) or very low temperatures
- Subject to rain
Do not allow any kind of object or liquid to penetrate this
product. This may cause irreparable damages.
Before using this product be sure to read and check all
instructions of this Owner's manual.
Other than the battery compartment, do not open
this product in any way. This will void the warranty and
may cause damage to the unit if manipulated by non-
authorized people.
Use only reliable AC adaptors with proper line voltage.
Non-reliable AC adaptors with different polarity or voltage
may cause damage or malfunction and void the warranty.
Using this pedal safely
Warning or Caution: Instructions alerting the user
to possible risks and/or injuries if the produc is used
improperly.
Forbidden actions: Used to advise those actions that
can't be carried out.

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Microtronix Eletrônica Ltda warrants this unit to be free from defects in materials and workmanship for a period of
1 (one) year from date of first purchase.
This warranty does not include any kind of damage resulting from accidents, misuse, abusie, alteration to the internal
circuitry or vital parts and damages caused by non-reliable AC adaptors.
If in any way this unit becomes defective within the warranty period, Microtronix Eletrônica Ltda will elect to repair
or replace it free of charge.
After the warranty period, Microtronix Eletrônica Ltda will repair this unit for a fee.
This warranty is extended for residents of Brazil. Please call main office for return
authorization number. Microtronix will not accept packages without prior authorization,
pre-paid freight, and proper insurance.
Please call or e-mail the international distributor
for warranty information.
Warranty
Produzido no Brasil por
Microtronix Eletrônica Ltda.
Impresso no Brasil
www.onerr.com