Kenwood KC-991 User manual

CONTROL AMPLIFIER
KC-991
INSTRUCTION MANUAL
KENWOOD CORPORATION
B60-0335-00 CSD (K, P, M, X, Y) [GA]
GOOMN>|

Introduction
Sar ae a
Your choice of this product indicates that you are a devotee
to excellence in sound reproduction.
We appreciate your patronage and take pride in the long tra-
dition of quality components that our company represents.
So that you can get the most out of your unit, we suggest
that you take the time to read through this manual before
you hook up and operate your system. This will acquaint
you with operating features and system-connection consid-
erations so that your listening pleasure will be enhanced
right from the start. You will notice that in all aspects of
planning, engineering, styling, operating convenience and
adaptability we have sought to anticipate your needs and
desires. Accessories
Keep this manual handy for future reference.
Remote control unit AC plug adaptor
(except for some areas)
For the unit with a European AC
plug in areas other than Europe.
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 num-
bers whenever you call upon your dealer for information or
service on this product.
Model _______-_-__ Serial Number
Unpacking
Unpack the unit carefully and make sure that all accessories
are put aside so they will not be lost.
Examine the unit for any possibility of 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 shipping damage.
We recommend that you retain the original carton and pack-
ing materials for use should you transport or ship the unit in
the future.
Overlay sheet
Contents
Introduction Storing user-created patterns
A\ Before applying power ahs Recalling a pattern from memory...
A\ Safety precautions Turning off the graphic equalizer
AX IMPORTANT SAFEGUARDS Contents of display
Controls and indicators suse Functions of the graphic equalizer...
System connections Remote control operation
System control operation Loading batteries
Operating Instructions a Operation procedure
Basic operation & Names of controls
To mute the sound temporarily ... 5
Function of the LOUDNESS key es Programming operation
Operation of CD DIRECT playback = To check the programmed contents
Listening to CD while recording another source Fe Normal remote control operation
Ordinary tape recording To change the programmed contents
Tape dubbing (Tape 2 —> Tape 1) To clear the entire programmed contents
Recording sound with equalizer effect applied .. - In case of difficulty
Graphic equalizer operation AX Specifications
Creation of equalizer pattern
2 KC-991 (En)

A\Caution: Read this page carefully to ensure safe operation.
Before applying power
For the U.S.A. and Canada For Australia and Europe
Important!
Units shipped to the U.S.A. and Canada are designed for opera-
tion on 120 volts AC only.
CAUTION: TO PREVENT ELECTRIC SHOCK DO NOT USE
THE AC PLUG WITH AN EXTENSION CORD, RECEPTACLE OR
OTHER OUTLET UNLESS THE BLADES CAN BE FULLY IN-
SERTED TO PREVENT BLADE EXPOSURE.
For the United Kingdom
Important!
Units shipped to the U.K. are designed for operation on
240 volts AC only.
The mains plug must be removed from the wall socket prior
to any internal examination.
The wires in this mains lead are coloured in accordance with
the following code:
Neutral
The wires in this mains lead must be connected to the termi-
nals in the plug as follows:
Wire colour
N or Black
L or Red
Brown to
Live
Neutral wv)
Plug
Notes: -
1. If a 13-amp plug is used, this must be fitted with a 5-amp
fuse.
2. if a 3-pin plug with earthing contact is used, no wire must
be connected to the E terminal.
Safety precautions
Piug terminal marking |
Important!
Units shipped to Australia are designed for operation on 240 V
AC only.
Units shipped to Europe are designed for operation on 230 V
AC only.
For other countries
Important!
Units shipped to countries other than the above countries 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 or 220-240 volts AC. The AC
voltage selector switch Type A or Type B on the rear panel is
set to the voltage that prevails in the area to which the unit
is shipped. Before connecting the power cord to your AC out-
let, 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.
AC voltage selector switch
—_ <—_
aie es TT]
ACI10- acovov~ AC240V~
120V~
<>
all
AC110V- <» AC220V-
120V ~ 240V ~
Move switch lever to match your line voltage with
a smail screwdriver or other pointed tool.
WARNING: TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE
TO RAIN OR MOISTURE.
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE
COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE, REFER SER-
VICING TO QUALIFIED SERVICE PERSONNEL.
THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL, WITHIN AN EQUILATERAL TRIANGLE,
IS INTENDED TO ALERT THE USER TO THE PRESENCE OF UNINSULATED ‘‘DANGEROUS VOL-
TAGE” WITHIN THE PRODUCT’S ENCLOSURE THAT MAY BE OF SUFFICIENT MAGNITUDE
TO CONSTITUTE A RISK OF ELECTRIC SHOCK TO PERSONS.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE
USER TO THE PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE (SERVICING) IN-
STRUCTIONS IN THE LITERATURE ACCOMPANYING THE APPLIANCE.
KC-991 (En) 3

IMPORTANT SAFEGUARDS
Please read all of the safety and operating instructions
before operating this unit. For best results, follow all
warnings placed on the unit and adhere to the operat-
ing and use instructions. These safety and operating in-
structions should be retained for future reference.
1. Power sources — The unit should be connected
to a power supply only of the type described in the
operating instructions or as marked on the appliance.
2.Power-cord protection — Power-supply cords
should be routed so that they are not likely to be
walked on or pinched by items placed upon or
against them, pay particular attention to cords at
plugs, convenience receptacles, and the point where
they exit from the unit.
Never pull or stretch
the cord.
3. Grounding or polarization — The precautions
should be taken so that the grounding or polariza-
tion means of this unit is not defeated.
4. Ventilation — The unit should be situated so that
its location or position does not interfere with its
proper ventilation.
To maintain good ventilation, do not put records or
a table-cloth on the unit. Place the unit at least
10 cm away from the walls.
Do not use the unit on a bed, sofa, rug or similar
surface that may block the ventilation openings.
5. Water and moisture — The unit should not be
used near water — for example, near a bathtub,
washbowl, kitchen sink, laundry tub, in a wet base-
ment, or near a swimming pool, etc. ;
6. Temperature — The unit may not function pro-
perly if used at extremely low, or freezing tempera-
tures. The ideal ambient temperature is above + 5°C
(41°F).
4 kC-991 (En)
A Caution : Read this page carefully to ensure
safe operation.
-7.Heat — The unit should be situated away from
heat sources such as radiators, heat registers,
stoves, or other units (including amplifiers) that
produce heat.
. Electric shock — Care should be taken so that ob-
jects do not fall and liquid is not spilled into the en-
closure through openings. If a metal object, such as
a hair pin or a needle, comes into contact with the
inside of this unit, a dangerous electric shock may
result. For families with children, never permit chil-
dren to put anything, especially metal, inside this
unit.
9.Enclosure removal — Never remove the en-
closure. If the internal parts are touched accidentally,
a serious electric shock might occur.
10. Magnetic fields — Keep the unit away from
sources of magnetic fields such as TV sets, speaker
systems, radios, motorized toys or magnetized
objects.
11. Cleaning — Do not use volatile solvents such as
alcohol, paint thinner, gasoline, or benzine, etc. to
clean the cabinet. Use a clean dry cloth.

A Caution : Read this page carefully to ensure
safe operation.
12. Carts and stands — An appliance and cart com-
bination should be moved with care. Quick stops,
excessive force, and uneven surfaces may cause the
appliance and cart combination to overturn.
\W~m aii
13.Nonuse periods — The power cord of the unit
should be unplugged from the outlet when left un-
used for a long period of time.
14. Abnormal smell — If an abnormal smell or smoke
is detected, immediately turn the power OFF and pull
out the power cord. Contact your dealer or nearest
service center. POWER OFF!
15. Damage requiring service — The unit should be
serviced by qualified service personnel when:
A. The power-supply cord or the plug has been
damaged; or
B. Objects have fallen, or liquid has been spilled into
the unit; or
C. The unit has been exposed to rain; or
D. The unit does not appear to operate normally or
exhibits a marked change in performance; or
E. The unit has been dropped, or the enclosure
damaged.
16. Servicing — The user should not attempt to ser-
vice the unit beyond that described in the operating
instructions. All other servicing should be referred
to qualified service personnel.
17. Outdoor antenna grounding — If an outside an-
tenna is connected to the receiver, be sure the an-
tenna system is grounded so as to provide some
protection against voltage surges and built up static
charges. Section 810 of the National Electrical Code,
ANSI/ NFPA No. 70—1984, provides information
with respect to proper grounding of the mast and
supporting structure, grounding of the lead-in wire
to an antenna discharge unit, size of grounding con-
ductors, location of antenna-discharge unit, connec-
tion to grounding electrodes, and requirements for
the grounding electrode. See Figure.
EXAMPLE OF ANTENNA GROUNDING AS PER
NATIONAL ELECTRICAL CODE
DISCHARGE UNIT
(NEC SECTION 810-20)
ELECTRIC
SERVICE
EQUIPMENT GROUNDING CONDUCTORS
(NEC SECTION 810-21)
GROUND CLAMPS
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
NEC — NATIONAL ELECTRICAL CODE (NEC ART 250, PART H)
18. Power lines — An outdoor antenna should be lo-
cated away from power lines.
19. AC outlets — Do not connect other audio equip-
ment with a power consumption larger than that
specified to the AC outlet on the rear panel. Never
connect other electrical units, such as an iron or
toaster, to it to prevent fire or electric shock.
Notes:
———_—____________
1. Item 3 is not required except for grounded or polarized equipment.
2. Item 17 and 18 are not required except for units provided with antenna terminalis.
3. Item 17 complies with UL in the U.S.A.
KC-991 (En 5

Controls and indicators
Graphic
equalizer/spectrum
CD
DIRECT
indicator
analyzer
display
:
or
TAPE
2
(MONITOR)
indicator
o + 180 + ° ease
Aid
NZ
NZ
NZ
Nid
KZ
|
Rigi
co
DIRECT
TAPE
2
.
ne
PM EN i) ln
ET
A
int
Epueesa,
ca
nec
—[-—
EO.REC
indicator
EQ. indicator (Equalizer)
Input mode/equalizer
channel display MEMORY indicator
LOUDNESS indicator
FREQUENCY EQUALIZER LEVEL Display INPUT SELECTOR
selector knob set knob knob
REMOTE VOLUME CONTROL
STAND-BY indicator : SENSOR knob/point indicator
KENWOOD STEREO CONTROL AMPLIFIER KC-991
VOLUME FONTROL
FREQUENCY
BQUALIZER
LEVEL
er
ae
INPUT SELECTOR,
LOUDNESS BALANCE
key control knob
(MONITOR)
key
key
MEMORY key
M.CALL key EQ.REC key CD DIRECT key
Scroll function
When a source is selected with the INPUT SELECTOR, source
name characters on the display flow from the right to the left and
stop at the center.
STAND BY mode of POWER key
When the power cord of this system is plugged into an AC outlet,
the STAND BY indicator lights up regardless of the ON/OFF setting
of the POWER key. This indicates that a small amount of current is
being supplied to the unit to back up the memory contents and
support the timer function. This mode is referred to as the Stand
By mode. While the STAND BY indicator is lit, the power of the
system can be switched ON/OFF from the remote control unit.
6 kc-991 {En)

System connections
Make connection as shown below. When connecting the related system components, refer also to the instruction
manuals of the related components.
Do not plug in the power lead until all connections are completed.
Tape deck 2 or surround processor
Tape deck 1
1O©
#/@\© H|©\©
SYSTEM CONTROL terminals
(Refer to pages 8, 9)
Control amplifier KC-991
AC110-120V/AC220-240V~
50/60Hz
INPUT 1 TAPE ‘OUTPUT Tora SOW MAX.
PHONG co tune VIED! vaneo Ag Reel [pay
onoran|
(]S
CHOKE
ONE
o
O
To
AC
outlet
Xs)
he ©} Gi (C fal i @: i © | ser1084 ov al AC a20V-240V~
Audio cord
(supplied) AC voltage selector switch
(Except for some areas.)
Power amplifier KM-991
To AC outlet
io
ic
Turntable
Tuner aaa
=
EG a ey SS a
0 a — STS A ee Oo ya sama | Rl
CD player ourPur
Sue,
©
©
Gl]
Notes:
Connect all cords firmly. If connections are loose there could be loss of sound or noise produced.
When plugging and unplugging connection cords, be sure to first remove the power cord from the AC outlet. Plugging/unplugging connec-
tion cords without removal of the power cord can cause maifunctions or damage to the unit.
Do not connect up a power source which is larger than that indicated on the socket at the rear of the unit.
1.
2.
3.
KC-991 (En) 7

System control operation
For
the
system
control
of
KENWOOD
system
components,
connect
them
using
the
system
control
cords
as
shown
in
the illustration below.
If
the
power
cords
are
connected
as
shown
in
the
illustration,
the
power
of
the
whole
system
can
be
switched
ON/OFF
from
the
POWER
key
on
the
amplifier.
(For the audio cord connection, please refer to "System connections” .)
Turntable
Power amplifier
To AC outlet
Connect the power cord of
the amplifier to the UN-
SWITCHED AC outlet of
the tuner. If the AC outlet
of the tuner is only the
SWITCHED outlet asin
case of the KT-2030, plug
the power cord of the
amplifier directly into a wall
power outlet.
To AC outlet
To AC outlet :
For U.S.A., Canada
and U.S. Military
%
SWITCHED AC outlet
The power of the component connected to this
kind of AC outlet -is switched ON/OFF in inter-
locked operation with the POWER key on the main
unit on which the AC outlet is installed.
UNSWITCHED AC outlet
The power of the component connected to this
kind of AC outlet can be switched ON/OFF regard-
less of the POWER key on the main unit.
(x)
2) (2
For other countries
8 «C991 (En)

Te
@ Operation
By connecting this unit to other KENWOOD system
components equipped with SYSTEM CONTROL termi-
nals, such as a tuner, tape deck, CD player and/or
turntable, the following convenient operations will be
available.
Automatic play operation
When starting play with the turntable, tape deck, or CD player con-
nected to this unit, set the INPUT SELECTOR knob to PHONO,
TAPE or CD. The turntable, tape deck, or CD player will automatical-
ly enter the play mode.
In the same way, pressing the Play key of the turntable, tape deck,
or CD player will automatically switch the INPUT SELECTOR setting
on this unit to the component on which the play key is pressed.
Synchro recording
To record the sound from the CD player or turntable onto a tape
with the tape deck, set the INPUT SELECTOR knob to CD or
PHONO and load a CD or record. Set the tape deck to record-pause
mode, then press the Play (START) key of the CD player or
turntable. The deck will start recording automatically, synchronized
with the CD player or turntable starting playing. For more details,
refer to the instruction manual of the tape deck.
Remote control
When the amplifier, tuner, tape deck, CD player, and turntable are
connected via the system control cords, these components can be
controlled from the remote control unit supplied with this unit.
System control connection
@
Be
sure
to
insert
the
system
control
cord
plugs
fully
into
the
SYSTEM
CONTROL
terminals.
@
If
the
system
control
cord
and
audio
cords
are
not
connected
properly,
the
automatic
system
governing
remote
control
and
system
functions
will
not
operate.
Notes:
1.
System
control
operation
of
the
unit
connected
to
the
TAPE
2
jacks
cannot
be
carried
out.
2.
If
the
components
connected
to
this unit
are
not
KENWOOD
system
components,
do
not
connect
anything
to
the
SYSTEM
CONTROL
ter-
minals.
KC-991 {En} 9

Operating instructions
a
m Basic operation
| Press the POWER key to ON.
POWER
2 Set the INPUT SELECTOR to select the source
to be played.
INPUT SELECTOR
O TUNER
PHONO «———® CD ~<——* TUNER
TAPE1 <«———-> VIDEO2 <———> VIDEO1
The source name characters appear on the dis-
play in the cycle as shown above.
® Do not set the INPUT SELECTOR knob in the mid position
between click positions.
To mute the sound temporarily
Press the MUTE key on the remote control unit.
VOLUME CONTROL
DELAY REAR VOLUME
TIME LEVEL CONTROL
7) Wz)
MUTE
Blinks
@ The indicator on the VOLUME CONTROL knob on the front
panel blinks.
@ Pressing the key again resumes the previous volume.
Notes:
4 Adjust the volume.
INPUT SELECTOR knob
LOUDNESS key
POWER key BALANCE control knob
3 Play the source component.
@ The selected source component is played automatically if it
is connected using a system control cord.
VOLUME CONTROL,
2
Decrease .
5 Adjust the left and right volume balance.
BALANCE
CENTER
Left Right
L R
@ For the tone control, refer to “Graphic equalizer operation”
(page 13).
Function of the LOUDNESS key
While dynamic sound can be experienced at high volume levels,
music may become flat with poor bass when the volume is set
low.
To compensate for this, press the LOUDNESS key when the VOL-
UME CONTROL is set to a low level. The bass will be boosted
making the sound richer and fuller.
LOUDNESS
Lights up
1.
When
the
TAPE
2
key
is
set
to
ON,
the
source
selected
with
the
INPUT
SELECTOR
cannot
be
heard
from
the
speakers.
To
listen
to
a
source
other than cassette deck 2, be sure to set the TAPE 2 key to OFF.
2.
The
source
selected
with
the
INPUT
SELECTOR
is
backed
up
for
a
few
days
even
when
the
power
cord
is
unplugged.
After
this
period,
the
tuner is automatically selected when the power is supplied.
10 KC-991 (En)