Boss Equalizer Owner's Manual

Before using this unit, carefully read the sections entitled: "USING THE UNIT SAFELY" and "IMPORTANT NOTES" (supplied on a separate sheet).
After reading, keep the document(s) where it will be available for immediate reference.
Main Features
7 The Graphic Equalizer GE-7 adjusts the harmonic contents of an instrument or microphone in seven separate bands.
7 It covers the frequency spectrum for electric bass, electric guitar, keyboard, mic, etc., to adjust them for room acoustic or to accent a particular tone range.
7 Each control adjusts a slightly expanded octave to yield ±15 dB of cut or boost.
7 The first three bands adjust the fundamental and the higher four bans adjust the strength of the harmonic accent.
7 In addition level control is very useful for the balance effect sound.
Panel Descriptions
DC IN jack
Accepts connection of an AC Adaptor (PSA series; sold separately). By using an AC Adaptor, you can play
without being concerned about how much battery power you have left.
* We recommend that you keep batteries installed in the unit even though you'll be powering it with
the AC adaptor. That way, you'll be able to continue a performance even if the cord of the AC adaptor
gets accidentally disconnected from the unit.
* Use only the specified AC adaptor (PSA-series).
* If the AC adaptor is connected while power is on, the power supply is drawn
from the AC adaptor.
Graphic equalizer
Control 7 octave bands from 100 Hz to 6.4 kHz by 15 dB up or down.
OUTPUT jack
This jack feeds signal to amplifier.
Pedal Switch
This switch turns the effects ON/OFF.
Thumbscrew
When this screw is loosened, the pedal will open, allowing you to change the
battery.
* For instructions on changing the battery, refer to "Changing the Battery."
Precautions When Connecting
5 To prevent malfunction and equipment failure, always turn
down the volume, and turn off all the units before making any
connections.
5 Once everything is properly connected, be sure to follow the
procedure below to turn on their power. If you turn on equipment
in the wrong order, you risk causing malfunction or equipment
failure.
When powering up: Turn on the power to your guitar amp last.
When powering down: Turn off the power to your guitar amp first.
5 Before turning the unit on/off, always be sure to turn the volume
down. Even with the volume turned down, you might hear some
sound when switching the unit on/off. However, this is normal and
does not indicate a malfunction.
Operating the Unit
1. After connecting all cords
required, set all knobs on
the panel as illustrated.
2. Depress the pedal switch
CHECK LED lights to
indicate "EFFECT ON" and
extinguishes to indicate
"EFFECT OFF."
* This CHECK LED is also used to
check battery. If LED fails to light or
becomes dim, the battery should be replaced.
3. Set Graphic Equalizer sliders
to proper position.
4. While switching pedal ON
and OFF, set Level slider
to proper position so no
volume difference between
Normal and Effect modes is
notices.
© 2016 Roland Corporation
Owner's Manual
AC Adaptor
(PSA series; sold separately)
Guitar Amplifier
Use of Battery
5 A battery was installed in the unit before it left the factory. The life
of this battery may be limited, however, since its primary purpose
was to enable testing.
5 If you handle batteries improperly, you risk explosion and fluid
leakage. Make sure that you carefully observe all of the items
related to batteries that are listed in "USING THE UNIT SAFELY" and
"IMPORTANT NOTES" (supplied on a separate sheet).
5 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.
5 Batteries should always be installed or replaced before connecting
any other devices. This way, you can prevent malfunction and
damage.
Changing the Battery
Thumbscrew
Battery Snap
Cord
Battery
Snap
9 V Battery
1. Hold down the pedal and loosen the thumbscrew, then
open the pedal upward.
* The pedal can be opened without detaching the thumbscrew
completely.
2. Remove the old battery from the battery housing, and
remove the snap cord connected to it.
3. Connect the snap cord to the new battery, and place
the battery inside the battery housing.
* Be sure to carefully observe the battery's polarity (+ versus -).
4. Slip the coil spring onto the spring base on the back of
the pedal, and then close the pedal.
* Carefully avoid getting the snap cord caught in the pedal, coil
spring, and battery housing.
5. Finally, insert the thumbscrew into the guide bush
hole and fasten it securely.
Indicator
This indicator shows whether an effect is ON/OFF, and doubles as the Battery Check indicator.
The indicator lights when an effect is ON.
* If this indicator goes dim or no longer lights while an effect is ON, the battery is near
exhaustion and should be replaced immediately.
Level slider
The level allows to control of GE-7's output loudness so that it can match or
contrast with the straight signal.
INPUT jack
This jack accepts input signals (coming from a guitar, some other musical
instrument, or another effects unit).
Pedal
Spring Base
Coil Spring
Guide Bush
Hole
Battery Housing
English
* The INPUT jack doubles as the power switch.
Power to the unit is turned on when you plug
into the INPUT jack; the power is turned off
when the cable is unplugged.
To prevent unnecessary battery consumption,
be sure to disconnect the plug from the INPUT
jack when not using the effects unit.
Electric Guitar
Main Specifications
Nominal Input Level -20 dBu
Input Impedance
1 MΩ
Nominal Output
-20 dBu
Level
Output Impedance 1 kΩ
Recommended Load
10 kΩ or greater
Impedance
Power Supply Carbon-zinc battery (9 V, 6F22) or
Alkaline battery (9 V, 6LR61)
AC adaptor (PSA series: sold separately)
Current Draw
30 mA
* Expected battery life under continuous use:
Carbon: 9 hours
Alkaline: 19.5 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 400 g / 15 oz (including battery)
Accessories
Leaflet ("USING THE UNIT SAFELY, " "IMPORTANT
NOTES, " and "Information")
Carbon-zinc battery (9 V, 6F22)
Options
AC adaptor (PSA-series)
(sold separately)
* 0 dBu = 0.775 Vrms
* This document explains the specifications of the product at the
time that the document was issued. For the latest information,
refer to the Roland website.
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