Kenwood GE-90 User manual

STEREO GRAPHIC EQUALIZER
INSTRUCTION MANUAL
@KENWOOD
— oo
DEAR AUDIO FAN
The purpose of this manual is to acquaint you with the
operating features of your new equalizer. You will notice that
in every detail of planing, engineering, styling, operating con-
venience, and adaptability, we have sought to anticipate your
needs and desires.
We suggest that you read this manual! carefully. Knowing
how to set up your equalizer to the best advantage will
enhance your {listening pleasure right from the start. You will
also become aware of the ease with which you can adjust
your equalizer to meet your special requirements.
FOR YOUR RECORDS
Record the serial number, found on the back of the unit, in
the spaces designated on the warranty card, and in the space
provided below. Refer to the model and serial numbers
whenever you call upon your Kenwood dealer for information
or service on this product.
Model GE-90 Serial number
AFTER UNPACKING
After unpacking, we recommend that you inspect the unit
for any possible shipping damage. If your unit is damaged or
fails to operate, notify your dealer immediately. If your unit
was shipped to you directly, notify the shipping company
without delay. Only the consignee (the person or company
receiving the unit) can file a claim against the carrier for ship-
ping damage.
We recommend that you retain the original carton and
packing materiais to prevent any damage should you
transport or ship your unit in the future.
INSTALLATION PRECAUTIONS
a) Avoid locations subject to direct sunlight.
b} Avoid high or low temperature extremes.
c} Keep the unit away from heat radiating sources.
d) Choose a location that is relatively free of vibration or ex-
cessive dust.
e) Make sure power is off before making any system ccnnec-
tions.
SAFETY PRECAUTIONS
CLEANING
Do not use volatile solvents such as alcohol, paint thinner,
gasoline, benzine, etc. to clean the cabinet. Use a silicone
cloth or a clean dry cloth.
SERVICE OR MODIFICATIONS
Do not remove the cabinet or touch internal parts. Refer
all service to qualified service personnel. Unauthorized
modifications can result in a dangerous shock hazard and can
void the warranty.
IMPORTANT!
U.S.A. AND CANADA
Units shipped to the U.S.A. and Canada are design-
ed for operation on 120 volts AC only. These units are
not equipped with an AC Voltage Selector switch and
the discussion of such a switch that follows should be
disregarded.
ALL OTHER COUNTRIES
Units shipped to countries other than the U.S.A. and
Canada are equipped with an AC Voltage Selector
switch on the rear panel.
Refer to the following paragraph for the proper setting
| of this switch.
AC VOLTAGE SELECTION
This unit operates on 110-120 volts or 220-240 voits
AC.The AC Voltage Selector Switch on the rear panel is set to
the voltage that prevails in the area to which the unit is ship-
ped. Before connecting the power cord to your AC outlet,
make sure that the setting position of this switch matches
your line voltage. If not, it must be set to your voltage in ac-
cordance with the following direction.
Note:
Our warranty does not cover damage caused by excessive line
voltage due to improper setting of the AC Voltage Selector Switch.
110-120V~ < » 220-240V~ 110-1 20V~ <m 220-240V~
Switch lever
met)
This shows switch
lever is locked in
110-120V~position.
This shows switch
lever is locked in
220-240V~position.
Move switch lever to match your line
voltage with a small screw driver or other
pointed tool.
AC VOLTAGE SELECTOR SWITCH
WARNING:
TO PREVENT FIRE OR SHOCK
HAZARD, DO NOT EXPOSE THIS
APPLIANCE TO RAIN OR MOISTURE.
PRINTED IN JAPAN B50-3354-00 (KPUMHUEX) (T}
567890N/152 D12345/252 67890N:253

SYSTEM CONNECTIONS
SPEAKER SYSTEM
Sd
TURNTABLE
TUNER
GE-90 REAR PANEL
TO AC OUTLET
TAPE DECK
Precautions
1. Each connecting cord must be connected securely to the
corresponding terminals (R to R and L to L). Poor connec-
tion can result in noise.
2. Before connecting or disconnecting any cord, be sure to
turn off the power switches of the GE-90 and integrated
amplifier.
3. Do not bind the input/output cords together with the
power cord and speaker cord. Do not extend the input/out-
put cords unnecessarily to avoid the possibility of noise or
deterioration of tone quality.
GE-90 2

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hn
CONTROLS AND INDICATORS
@ Power Switch
@ Left Channel Equalizer Controls
@ Right Channel! Equalizer Controls
Flat output is obtained when the red LED indicators are in the
center positions. Tone quality is adjusted by changing the out-
put levels of the separate frequency ranges upward or
downward by up to 10 dB. The output levels are adjustable
both upwards and downwards in 5 steps of 2 dB each.
Upward movement:
Press the upper button. The output level is in-
creased one step each time the button is press-
ed.
Downward movement:
Press the lower button. The output level is
reduced one step each time the button is press-
ed. Operation is the same for both the right and
left channels.
Increasing output at this frequency will boost
bass sound, such as from a pipe organ or contra-
bass, to provide a sense of weight and stability.
Decreasing output at this frequency will
eliminate hazy bass tones to produce clear
sounds.
This control is used to adjust the level of low fre-
quency signals. Moving the control in upward
direction will help to increase bass tones from
small size speakers.
This control is mainly used to adjust level of
vocal sounds. Move the control up and down to
obtain suitable vocal sounds.
The strength or weakness of a sound is promi-
nent at this frequency.
Increasing output at this frequency will effec-
tively enhance musical presence.
This frequency is the most striking part of the
sound to listeners. Increasing output at this fre-
quency enhances the brightness, brilliance,
crispness, etc. of wind instruments.
60 Hz:
160 Hz:
400 Hz:
1 kHz:
2.5 kHz:
OPERATING PROCEDURE
1. Depress the power switch to turn on the power.
2. Set the amplifier TAPE MONITOR switch to ‘‘TAPE’’ or
“ON”.
3. To listen to tape, set the Tape Monitor switch @ to TAPE.
To listen to other program sources (turntable, FM, etc.),
set the switch to SOURCE.
13) 0090 @
6 kHz: Effective for controlling the brightness of a
sound.
Increasing output at this frequency will help to
enhance the naturalness of sounds such as pro-
duced by the strings of violins,
16 kHz: This control adjusts very high frequency sounds
such as from cymbals. To eliminate tape hiss
noise, move the control downward.
© Tape Monitor Switch
TAPE: To playback a tape deck connected to the
amplifier or to monitor the sounds being recorded.
SOURCE: — To listen to program sources (FM/AM, turntable,
microphone, etc.) connected to the amplifier.
@® Equalizer Switch
Turn this switch to ON and the frequency characteristic will
be modified by passing through the graphic equalizer. In the
OFF position, the frequency characteristic remains unchang-
ed.
@ Equalizer Recording Switch
Depress this switch and equalizer switch® to ON; signals to
be recorded on tape will allow equalized. If you wish to record
non-equalized signals with the equalizer switch in the ON
position, turn the equalizer recording switch to OFF. This will
allow you to hear the equalized signals while recording non-
equalized signals.
@ Attenuator
Adjustment range: O to — 20 dB {0 dB in normal use). This
control supplements the equalizer by acting to adjust the out-
put level.
@ Power Indicator
Lights when the power switch is turned on.
© Equalizer Recording Indicator
Lights when switch@ is set for equalized recording.
4. Set the EQUALIZER switch @ to ON and adjust the
equalizer controls to suit your listening preference.
5. To record equalized programs on tape, follow the pro-
cedures noted in the above items 1, 2, 3 and 4, then set
the EQUALIZER REC switch @ to ON. If it is desired to
record non-equalized programs, simply set the
EQUALIZER REC switch @ to OFF.
GE-90

SAFETY INSTRUCTIONS
1.
Read
Instructions
—
All
the
safety
and
operating
in-
9.
Power
Cord
Protection
—
Power
supply
cords
should
structions
should
be
read
before
the
appliance
is
be
routed
so
that
they
are
not
likely
to
be
walked
on
or
operated pinched
by
items
placed
upon
or
against
them,
paying
particular attention to cords at plugs, convenience
2. Retain Instructions — The safety and operating in- receptacles, and the point where they exit from the ap-
structions should be retained for future reference. pliance.
sh ales es
3.
Heed
Warnings
—
Al!
warnings
on
the
appliance
and
in
10.
Cleaning
—
The
appliance
should
be
cleaned
only
as
the
operating
instructions
should
be
adhered
to.
recommended
by
the
manufacturer.
4.
Follow
Instructions
—
All
operating
and
use
instruc-
11.
Nonuse
Periods
—
The
power
cord
of
the
appliance
tions
should be
followed.
should
be
unplugged
from
the
outlet
when
left
unused
for a long period of time.
5, Water and Moisture — The appliance should not be
used near water — for example, near a bathtub, 12. Object and Liquid Entry — Care should be taken so that
washbowl, kitchen sink, laundry tub, in a wet base- objetcts do not fall and liquids are not spilled into the
ment, or near a swimming pool, etc. enclosure through openings.
6.
Ventilation
—
The
appliance
should
be
situated
so
that
13.
Damage
Requiring
Service
—
The
appliance
should
be
its
location
or
position
does
not
interfere
with
its
pro-
serviced
by
qualified
service
personnel
when:
per
ventilation.
For
example,
the
appliance
should
not
A.
The power
supply
cord
or
the
plug
has
been
damag-
be
situated
on
a
bed,
sofa,
rug,
or
similar
surface
that
ed;
or
may
block
the
ventilation
opennings;
or,
placed
in
a
B. Objects
have
fallen,
or liquid
has been
spilled
into
built-in
installation,
such
as
a
bookcase
or
cabinet
that
the
appliance;
or
may
impede
the flow
of
air
through
the
ventilation
C.
The
appliance
has
been
exposed
to rain;
or
openings.
D.
The
appliance
does
not
appear to
operate
normally
or exhibits a marked change in performance; or
7.
Heat
—
The
appliance
should
be
situated
away
from
E.
The
appliance
has
been
dropped,
or
the
enclosure
heat
sources
such
as
radiators, heat
registers,
stoves
damaged.
or
other
appliances
(including
amplifiers)
that
produce
heat.
14.
Servicing
—
The user
should
not
attempt
to
service
the
appliance beyond that described in the operating in-
8.
Power
Sources
—
The
appliance
should
be
connected
structions.
All
other
servicing
should
be
referred
to
to
a
power
supply
only
of the
type
described
in
the
qualified
service
personnel.
operating
instructions
or
as
marked
on
the
appliance.
SPECIFICATIONS
Equalizer characteristic
Variable range ..........0..ceceeeee even er eeeeeteneeeares +10 dB {Ll & R independently adjustable) 2 dB Step
Center frequencies .............:.ccceeeeeeeceeeereeeees 60 Hz, 160 Hz, 400 Hz, 1 kHz, 2.5 kHz, 6 kHz, 16 kHz
AtteEMUatiOn ........cccccccecneneeeneneeeeeeeeeneneaeneeeeeenes O~ —20 dB at 1 kHz
Frequency reSPONSe ...........ccececeeeeeeceveeeeeeeereres 10 Hz~ 60 kHz +0 GB, —1 dB
Harmonic distortion............ agian aausdausaeswagewsseee Less than 0.006% (20 Hz~ 20 kHz, all controis flat, output 1 V)
Maximum output .................cccscscsseeeeeeeeeeeeeee eee 5 V (1 kHz, THD 0.01%, R, 47 kohms)
SIN VaUO sovcced ec cnsecivdee res io anesageceratiaearetanweiesscacas 110 dB (Short-circuited IHF-A network)
Input impedance ...............0.cscesee esse sececneneeeeeenee 47 kohms
Gan sss ch ois ciyietecsoses caddis het ceastadeaciceeen ce seseawe eee O dB+1 dB
Power CONSUINPTION ..........:.ccceeceeeeeeeeeene nena teens 0.06 A (UL, CSA}
7 W (IEC)
DiMeNsiONS............-..cceceeeen cece ee neneneceeeeeeceaeneees 440(W) x 5O(H) x 148(D) mm
Weighitsscccessiceveucctec.exsloeenstihedteni dvastes veces es 2.2 kg {net), 2.8 kg (gross)
Note:
-
Kenwood follows a policy of continuous advancements in development. For this reason specifications may be changed without notice.
GE-90