Boss Audio Systems Music Pedal BF 3 User Manual

Owner’s Manual  
AC DC  
AC & BATTERY  
POWERED  
FET  
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Fe a tu re s  
  Stereo output gives your sound greater breadth along with a deep effect that imparts  
a sense of three-dimensional rotation.  
  Includes a new “ULTRA” mode for a more intense flanging effect.  
  Also features a “GATE/ PAN” mode. When outputting in mono, a slicer effect is add-  
ed to the flanging sound, resulting in a “gate flanger” effect; and when using stereo  
output, you get a flanging effect that is panned three-dimensionally across the sound  
field.  
  Includes a “MOMENTARYmode, which allows you to apply the flanger effect ex-  
actly at the point in a phrase you want.  
  Also includes a “Tap Tempo” function that lets you set the RATE to the tempo at  
which the pedal is pressed.  
3
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Pa n e l De scrip tio n  
fig.01  
1. AC Adaptor Jack  
1 2  
Accepts connection of an AC Adaptor (op-  
tionally available BOSS PSA-Series). By  
using an AC Adaptor, you can play with-  
out being concerned about how much bat-  
tery power you have left.  
* Use only the specified AC adaptor (PSA-  
Series), and make sure the line voltage at the  
installation matches the input voltage  
specified on the AC adaptor' s body. Other  
AC adaptors may use a different polarity, or  
be designed for a different voltage, so their  
use could result in damage, malfunction, or  
electric shock.  
3
4
5
* As soon as you connect the AC adaptor, the  
unit is turned on.  
6
7
* If there is battery in the unit while an AC  
adaptor is being used, normal operation will  
continue should the line voltage be interrupted  
(power blackout or power cord disconnection).  
4
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Panel Description  
2. CHECK Indicator  
3. OUTPUT A (MONO)/ OUTPUT B Jack  
The output jacks are used to connect the  
unit to an amplifier or another effects unit.  
For monaural use, make the connection to  
the OUTPUT A (MONO) jack.  
This indicator shows whether an effect is  
ON/ OFF, indicates the tempo (TEMPO  
mode: p. 11–12), and also doubles as the  
Battery Check indicator.  
The indicator lights when an effect is ON.  
4. GUITAR IN Jack  
* If this indicator goes dim or no longer lights  
while an effect is ON or while the BF-3 is in  
TEMPO mode, the battery is near exhaustion  
and should be replaced immediately. For  
instructions on changing the batteries, refer  
to “Changing the Battery” (p. 14).  
This jack accepts input signals (coming  
from a guitar, some other musical instru-  
ment, or another effects unit).  
5. BASS IN Jack  
This jack accepts input signal coming from  
a bass guitar.  
* The CHECK indicator shows whether the  
effect is being applied or not, and is used to  
indicate other effects. It does not indicate  
whether the power to the device is on or not.  
* BASS IN is disabled when the GUITAR IN  
jack is used.  
* When running the unit on battery power, the  
GUITAR IN and BASS IN jacks double as  
power switches. Power to the unit is turned  
5
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Panel Description  
on when you plug into the GUITAR IN or  
BASS IN jack; the power is turned off when  
the cable is unplugged. Be sure to disconnect  
any cord plugged into the GUITAR IN or  
BASS IN jack when not using this effects  
device.  
6. Pedal Switch  
Used for switching effects on/ off, and for  
inputting the tempo.  
8 9 10  
8. MANUAL Knob  
11  
12  
* You cannot input the tempo in MOMENTARY  
mode.  
fig.02  
7. Thumbscrew  
Adjusts the center frequency to which the  
When this screw is loosened, the pedal  
will open, allowing you to change the bat-  
tery.  
effect is applied.  
The range is raised as you turn the knob to  
the right (clockwise).  
* For instructions on changing the batteries,  
refer to “Changing the Battery” (p. 14).  
* The settings range varies with the selected  
mode, as well as when an instrument is  
connected to BASS IN.  
6
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Panel Description  
9. RES (resonance) Knob  
12. MODE Knob  
Selects the flanger effect and pedal mode.  
Adjusts the amount of resonance (feed-  
back). The more the knob is turned to the  
right, the more the flanger sound is em-  
phasized, and the stronger the characteris-  
tic effect in the sound becomes.  
ULTRA:  
Provides a stronger flanger effect than  
STANDARD.  
STANDARD:  
Provides a normal flanger effect.  
10. DEPTH Knob  
GATE/PAN:  
Adjusts the sweep depth. The effect deep-  
ens as you turn the knob to the right.  
When playing in mono, this creates radical  
changes in the output volume.When playing  
in stereo, this alternately pans the output to  
the left and right, resulting in a flanger effect  
that imparts a sense of rotation or spinning.  
* The MANUAL knob has no function when  
this knob is turned completely clockwise.  
MOMENTARY:  
11. RATE Knob  
The flanger effect is applied only while  
the BF-3’s pedal is depressed. The STAN-  
DARD tone is applied, and flanging starts  
in the low end.  
Adjusts the rate of the flanging. The flange  
effect speeds up as you turn the knob to  
the right.  
* You cannot input the tempo in MOMENTARY  
mode.  
7
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Co n n e ctio n s  
fig.03  
AC Adaptor  
BOSS PSA-series  
(option)  
OUT 9V DC/200mA  
Electric  
Guitar  
Bass  
Guitar  
Guitar Amplifier  
(Bass Amplifier)  
For monoural use,  
make the connection to  
the OUTPUT A (MONO) jack.  
* The GUITAR IN jack is given priority.  
8
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Connections  
* Inserting a plug into the GUITAR IN or BASS IN Jack will automatically switch the unit on.  
* The use of an AC adaptor is recommended as the unit’s power consumption is relatively high.  
Should you prefer to use batteries, please use the alkaline type.  
* Noise may be produced if wireless communications devices, such as cell phones, are operated in the  
vicinity of this unit. Such noise could occur when receiving or initiating a call, or while  
conversing. Should you experience such problems, you should relocate such wireless devices so they  
are at a greater distance from this unit, or switch them off.  
* To prevent malfunction and/or damage to speakers or other devices, always turn down the volume,  
and turn off the power on all devices before making any connections.  
* If there are batteries in the unit while an AC adaptor is being used, normal operation will continue  
should the line voltage be interrupted (power blackout or power cord disconnection).  
* Once the connections have been completed (p. 8), turn on power to your various devices in the  
order specified. By turning on devices in the wrong order, you risk causing malfunction and/or  
damage to speakers and other devices.  
When powering up:  
Turn on the power to your guitar amp last.  
When powering down: Turn off the power to your guitar amp first.  
* Always make sure to have the volume level turned down before switching on power. Even with the  
volume all the way down, you may still hear some sound when the power is switched on, but this is  
normal, and does not indicate a malfunction.  
* When operating on battery power only, the unit’s indicator will become dim when battery power  
gets too low. Replace the battery as soon as possible.  
9
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O p e ra tin g th e Un it  
fig.05  
2 . Select the mode with the MODE knob.  
* When MOMENTARY is selected, the  
CHECK indicator light goes off, and the  
effect is switched off. Hold the pedal down  
when using the following settings in  
MOMENTARY mode (the effect is on only  
while the pedal is depressed).  
3 . Set the flanging rate with the RATE  
knob.  
5 6  
4
3
2
4 . Set the sweep depth with the DEPTH  
knob.  
5 . Set the center frequency to which the  
effect is applied with the MANUAL  
knob.  
1 . When you have made the necessary  
connections (p. 8), depress the pedal  
switch to turn the effect on. (the  
CHECK indicator turns red.)  
6 . Turn the RES knob to set the strength  
* When MOMENTARY mode is selected,  
continue pressing the pedal switch. (the effect  
is on only while the pedal is depressed)  
of the effect.  
1 0  
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Se ttin g th e RATE b y In p u ttin g th e Te m p o w ith th e Pe d a l Sw itch  
When Switching to Tempo Input with the Effect ON (CHECK indicator: Red)  
* RATE cycles for use with the tempo settings can be made in the range of 0.1–18 seconds.  
fig.06  
Red  
Off  
Red/Green Blinking  
Red  
CHECK  
Indicator  
Flanger Effects  
On  
Off  
On  
Off  
Pedal Switch  
Press and hold  
the BF-3s  
Press and hold  
the BF-3s  
Press the BF-3s pedal  
switch in timing with the  
tempo.  
1
2
3
pedal switch  
for at least two  
seconds.  
pedal switch  
for at least two  
seconds.  
RATE  
Effect reflects knob positions  
Effect synchronized to tempo  
* If you carry out Step  
3
immediately after Step 2 , Step  
3
may inadvertently be interpreted as  
tempo input, thus changing the RATE setting. Allow a brief interval to pass before progressing  
from Step to Step 3 .  
2
* If you adjust the RATE knob after completing the settings, the effect then reflects the position of the RATE knob.  
* You cannot input the tempo in MOMENTARY mode.  
1 1  
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Setting the RATE by Inputting the Tempo with the Pedal Switch  
When Switching to Tempo Input with the Effect OFF (CHECK indicator: Off)  
* RATE cycles for use with the tempo settings can be made in the range of 0.1–18 seconds.  
fig.07  
Off  
Red  
Red/Green Blinking  
Red  
CHECK  
Indicator  
Flanger Effects  
Off  
On  
On  
Off  
Pedal Switch  
Press and hold  
the BF-3s  
Press and hold  
the BF-3s  
Press the BF-3s pedal  
switch in timing with the  
tempo.  
1
2
3
pedal switch  
for at least two  
seconds.  
pedal switch  
for at least two  
seconds.  
RATE  
Effect reflects knob positions  
Effect synchronized to tempo  
* If you carry out Step  
3
immediately after Step 2 , Step  
3
may inadvertently be interpreted as  
tempo input, thus changing the RATE setting. Allow a brief interval to pass before progressing  
from Step to Step 3 .  
2
* If you adjust the RATE knob after completing the settings, the effect then reflects the position of the RATE knob.  
* You cannot input the tempo in MOMENTARY mode.  
1 2  
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Setting the RATE by Inputting the Tempo with the Pedal Switch  
Relationship Between the Flanger and Gate Effects  
* The gate effect switches on and off 32 times over the period of the flanger effect' s rise and fall.  
* If you want to have the gate working on eighth notes, press the pedal switch at the beginning of the  
fourth measure of the song you want to have synchronized.  
fig.08  
Frequency  
Flanger  
Rise  
Flanger  
Fall  
Flanger  
Rise  
Flanger  
Fall  
High  
GATE Effects  
Low  
16 Times  
GATE =  
16 Times  
16 Times  
16 Times  
RATE  
Flanger Effects  
Rise  
Flanger Effects  
Fall  
Input the tempo  
Input the tempo  
1 3  
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Ch a n g in g th e Ba tte ry  
When the indicator goes dim or no longer  
lights while an effect is on, it means that the  
battery is nearly dead and must be replaced.  
Replace the battery following the steps below.  
* This device consumes considerable power, so use of  
the AC adaptor is recommended. When powering  
1 . Loosen the thumbscrew at the front of  
the pedal, then lift the pedal upwards  
to open the unit.  
* The thumbscrew can be left in the pedal while  
changing the battery.  
2 . Remove the old battery from the battery  
housing, and remove the snap cord con-  
nected to it.  
the unit with batteries, use alkaline batteries.  
fig.09  
Thumbscrew  
Pedal  
3 . Connect the snap cord to the new battery,  
and place the battery inside the battery  
housing.  
Spring Base  
Battery Snap  
Cord  
* Be sure to carefully observe the battery' s  
polarity (+ versus –).  
Coil Spring  
Guide Bush  
Hole  
4 . Slip the coil spring onto the spring base on  
the back of the pedal, then close the pedal.  
* Carefully avoid getting the snap cord caught  
in the coil spring.  
Battery  
Snap  
Battery Housing  
5 . Finally, insert the thumbscrew into the  
9V Battery  
guide bush hole and fasten it securely.  
1 4  
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Tro u b le sh o o tin g  
* The CHECK indicator shows whether the  
effect is being applied or not, and is used to  
indicate other effects. It does not indicate  
whether the power to the device is on or not.  
Power won’t come on:  
  Is the specified adaptor (PSA-series;  
sold separately) properly connected?  
Check the connection once more (p. 8).  
* Never use any AC adapter other than one  
specified for use with the BF-3.  
CHECK indicator doesn’t light:  
  Is the MODE knob set to MOMEN-  
TARY?  
  Is the battery low or dead?  
Replace with a new battery (p. 14).  
When in MOMENTARY mode, the  
CHECK indicator light is normally off  
(the effect is off). The indicator lights  
(the effect is on) only while the pedal is  
depressed.  
The CHECK indicator lights up for sev-  
eral seconds immediately after the  
power is turned on.  
  Is the guitar connected properly to the  
GUITAR IN or BASS IN jack?  
Check the connection once more (p. 8).  
* To prevent excess battery drainage, turn the  
power on without the plug inserted in the  
GUITAR IN or BASS IN jack.  
* The battery that was supplied with the unit is  
for temporary use-intended primarily for  
testing its operation. For using the unit for  
more extended periods of time, we  
recommend the use of alkaline batteries.  
1 5  
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Troubleshooting  
  Could the level of the sound being in-  
put be excessive?  
No sound / Low volume:  
  Is the BF-3 properly connected to your  
instrument?  
With some guitars, distortion may be  
produced. Be careful of your guitar's  
output level.  
Check the connection once more (p. 8).  
 
Is the volume turned down on any guitar  
amp or effects device you have connected?  
Can’t input the tempo:  
  Are you inputting to both the GUI-  
TAR IN and BASS IN jacks?  
 
Is the MODE knob set to MOMENTARY?  
In MOMENTARY mode, the pedal  
switch only functions as an effect on/  
off switch.  
The GUITAR IN jack is given priority.  
If both jacks are used at the same time,  
the signal that has been applied at  
BASS IN will not be heard.  
Tempo not synchronized with  
the tempo input:  
  Is the MODE knob set to GATE?  
When synching to GATE, please refer  
to “Relationship Between the Flanger  
and Gate Effects” (p. 13).  
Sound is distorted:  
  Is the battery low?  
As the battery is drained, the CHECK  
indicator dims, and the BF-3 may start  
to function incorrectly. Replace with a  
new battery (p. 14).  
1 6  
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Se ttin g Sa m p le s  
For Guitar  
Standard Flanger  
fig.10  
Stereo Flanger  
fig.12  
Stereo  
Out  
Ultra Flanger  
Rotary Flanger  
fig.11  
fig.13  
Stereo  
Out  
1 7  
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Setting Samples  
For Guitar  
Gate Flanger  
Tremolo Flanger  
fig.14  
fig.16  
OUTPUT A  
(MONO)  
OUTPUT B  
Chorus Sound  
Fixed Flanging  
fig.15  
fig.17  
1 8  
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Setting Samples  
For Bass  
Strong Flanging  
Vibrato Sound  
fig.18  
fig.20  
Deep Flanger  
Slicer Sound  
fig.19  
fig.21  
1 9  
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Se ttin g Me m o  
(
)
)
(
(
)
)
fig.26  
fig.26  
(
fig.26  
fig.26  
2 0  
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Sp e cifica tio n s  
BF-3: Flanger  
Nominal Input Level...................-20 dBu  
Input Impedance..........................1 MΩ  
Nominal Output Level................-20 dBu  
Output Impedance ......................1 kΩ  
Recommended Load Impedance ....10 kor greater  
Delay Time....................................0.3 mS–14.4 mS (GUITAR IN)  
0.3 mS–6.3 mS (BASS IN)  
LFO Speed ....................................100 mS–18 S  
Residual Noise .............................-95 dBu (IHF-A Typ.)  
Controls.........................................Pedal Switch, MANUAL Knob, RES (resonance) Knob,  
DEPTH Knob, RATE Knob, MODE Knob  
Indicator ........................................CHECK Indicator (Serves also as tempo and battery check indicator)  
Connectors....................................GUITAR IN Jack, BASS IN Jack, OUTPUT A (MONO) Jack,  
OUTPUT B Jack, AC adaptor Jack (DC 9 V)  
Power Supply...............................DC 9 V; Dry battery (9 V type) S-006P/ 9 V (6F22/ 9 V)  
Dry battery (9 V type) 6AM6/ 9 V (alkaline)  
AC Adaptor (PSA-series: optional)  
2 1  
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Specifications  
Current Draw ...............................40 mA (DC 9 V)  
* Expected battery life under continuous use:  
Carbon: 3 hours Alkaline: 10 hours  
These figures will vary depending on the actual conditions of use.  
Dimensions...................................73 (W) x 129 (D) x 59 (H) mm  
2-7/ 8 (W) x 5-1/ 8 (D) x 2-3/ 8 (H) inches  
Weight ...........................................420 g / 15 oz (including Battery)  
Accessories....................................Owners Manual  
Leaflet (“USING THE UNIT SAFELY,” “IMPORTANT  
NOTES,” and “Information”)  
Dry battery (9 V type) S-006P/ 9 V (6F22/ 9 V)  
* The battery that was supplied with the unit is for temporary use-  
intended primarily for testing its operation.  
Options..........................................AC Adaptor PSA-Series  
* 0 dBu = 0.775 Vrms  
* In the interest of product improvement, the specifications and/or appearance of this unit are subject  
to change without prior notice.  
2 2  
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For EU Countries  
For the USA  
This product complies with the requirements of European Directive 89/336/EEC.  
FEDERAL COMMUNICATIONS COMMISSION  
RADIO FREQUENCY INTERFERENCE STATEMENT  
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the  
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in  
a
residential  
installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in  
accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee  
that interference will not occur in  
a
particular installation. If this equipment does cause harmful interference to radio or  
television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the  
interference by one or more of the following measures:  
Reorient or relocate the receiving antenna.  
Increase the separation between the equipment and receiver.  
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.  
Consult the dealer or an experienced radio/TV technician for help.  
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:  
(1) This device may not cause harmful interference, and  
(2) This device must accept any interference received, including interference that may cause undesired operation.  
Unauthorized changes or modification to this system can void the users authority to operate this equipment.  
This equipment requires shielded interface cables in order to meet FCC class B Limit.  
For Canada  
NOTICE  
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.  
AVIS  
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.  
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G6017305  
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