Yamaha C-80 User manual

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: NDIAGE
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Toe RDUM eene e WARNING a.
[ROUBLESHOQTING eiii io e eee diee a Te prevent fire or shock.
SPECIF CATIONS: iS eee oe VETE COENA NEUE COPPA NR SI DIE a Burger ue Noah Pula d
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CAUTION (PREPARED IN ACCORDANCE WITH UL STANDARD 1270)
“| Read Instructions — All the safety and operating
instructions should be'read before the appliance is operated.
- Retain Instructions — The safety and operating
. instructions should be retained for future reference,
= Heed Warnings — Ali warnings on the appliance and in
the operating instructions should be adhered to.
A, Follow Instructions — All operating and other instruc-
tiors should be followed.
= Water and Moisture — The appliance should not be
uset near water — for example, near a bathtub, washbowl,
kitcnen sink, laundry tub, in a wet basement, or near
swiraming pool, ett...
ng
m
C3 Carts and Stands — The appliance should be used only
with a cart or stand that is recommended by the manufac-
turer,
EERE RS
ES Wall or Ceiling Mounting -— The appliance shouid be
mounted to a wall or ceiling only as recommended by the
manufacturer,
bora Ventilation — The appliance should be situated so that
its location or position does not interfere. with its proper
ventilation, For example, the appliance should not be
- situated on a bed, sofa, rug, or similar surface that may
block the ventilation openings; or placed in a built-in installa-
tion, such as a bookcase or cabinet that may impede the flow
of air through the ventilation openings.
= Heat — The appliance should be situated away from
heat sources such as radiators, stoves, or other appliances
that produce heat. .
ed to a power supply only of the type described in the
operating instructions or as marked on the appliance,
1 d 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, paying
particular attention to cords at plugs, convenience `
receptacles, and the point where they exit from the:
appliance.
t cy
4 E Cleaning — The appliance should be cleaned oniy
as recommended by the manufacturer,
pe | |
1 3 Nonuse Periods — The power cord of the appliance
should be unplugged from the outiet when left unused for a
tong period of time. |
e] zl Object and Liquid Entry — Care should be taken
so that objects do not fall into and liquids not spilled into
the inside of the appliance, .
"| D Damage Requiring Service — The appliance should
be serviced by qualified service personnel when:
A. The power-supply cord or the plug has been damaged;
ar. |
B. Objects have fallen, or liquid has been spilled into the
appliance; or l l
C. The appliance has been exposed to rain; or
D. The appliance does not appear to operate normally or -
exhibits a marked change in performance; or
E. The appliance has been dropped, or the cabinet damag-
ed.
A E
| Servicing — The user should not attempt to service
the appliance beyond those means described in the operat-
ing instructions. Al other servicing should be referred to
qualified service personnel, 2

i PREES REINER
RISK OF ELECTRIC SHOCK
HO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC
USER- SERVICEABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED SERVICE PERSONNEL. -
s Exp.anation of Graphic Symbols
The lightning flash with arrowhead
symbol, within an equilateral triangle,
is intended to alert you to the
* presence of uninsulated “dangerous
PE LORS voltage” within the product's
| enclosure that may be of sufficient
magnitude to constitute a risk of elec-
tric shock to persons.
The exclamation point within an
equilateral triangle is intended to alert
you to the presence of important
operating and maintenance (servicing)
instructions in the literature accompa-
nying the appliance.
SHOCK, DO NOT REMOVE COVER (OR RACK). NO a
To ensure the finest performance, please read this manual
carefully. Keep it in a safe piace for future reference.
2
install your C-80 in a cool, dry, clean place—away from
windows, heat sources, and too much vibration, dust, moisture or
cold. Avoid sources of hum (transformers, motors). Ta prevent
fire or electrical shack, da not expose to rain and water.
Never open the cabinet. If a foreign object drops into the set,
contact your dealer.
é.
Do not use force on switches, knobs or cords. When moving the
set, first gentiy disconnect the power plug anc the cords
connecting to other equipment. Never yank the cords.
5
Always set the volume control to ‘oo’ while lowering the
tonearm to play a record, turn the volume up with the stylus in
the groove, l
Do not attempt to clean the C-80 with chemical solvents; this
might damage the finish. Use a clean, dry cloih.
7
Be sure to read the "troubleshooting" section on common
operating errors before concluding that your C-80 is faulty.
pane! if that equipment requires more power than the outlets are
rated to provide.
2

End
He
sure
to
connect
the
left
(L)
and
right
(R)
channels
consistently
from
component
to
component.
Switched power supply. Total maximum
Tape deck 1
Unswitched power supply. Maximum
= 800 Wh
a)
LINE OUT/PLAY
pramena
The invert terminals allow operation of
one power amp for each channel-=or
EAT ie apes son
MÀ i
EE
|
rephasing
for
fuller
bass
reproduction.
|
|
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Ground
wire
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ATTENTION sRISGRE NE CHAE RLECTRIOUE
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WARNINING ra prevent rine on sack
HAZARA, Dd NOT EXPOSE THIS
APPLIANCE TO RAIN BF
MOIETURE,
CAUTION —-— usc onywa THe
PREISATER LOAD,
ATTENTION :EMPLOYER UNIGUEMENT
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second turntable if it uses an MM i
cartridge.
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Power amp.
Compact Disc Player
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Tape
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Speaker
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Speaker

ES ECON NECTING A TURNTABLE
The C C-80 accepts two turntables. The PHONO 1 turntable can
carry either an MM or an MC cartridge; the PHONO 2 turntable -
is MM only. The front oanel's PHONO rotary switch selects the
turniasie. The lefimost position selects PHONO 2, which requires
an MM cartridge of 47k ohms 220 pf impedance. The (Ne
positions to the right are all for PHONO 1: a choice of 3 MM and
2 MC settings is offered.
On the rear panel next to the turntable jacks is the Phono Gain
Switch—a small red button. Use this switch to refine volume
control with high output level ¢ cartridges, Press the button in to
lower the output signa! by 10 decibels; press again to release the
button and return the out iB signal to normal
Plug each turntable's output cords into the appropriate PHONO
jacks. Connect the turntabie s ground wire to the Gnd terminal.
(This normally produces minimum hum, but in some cases
disconnecting the ground wire gives better results.) |
Phono Gain
i Üulaetmim 7799
i owiten Pra
E CONNECTING A TUNER
Connect cords from the tuners OUTPUT jacks to the TUNER
jacks of the amplifier.
B CONNECTING A TAPE DEC K
Two tape decks can be connected to this ampifier's two sets of
jacks ‘TAPE 1 and TAPE 2). Connect the TAPE PB jacks to the
tape ceck's LINE OUT jacks, and the B QUT jacks to the
deck's LINE IN jacks.
Digital Audio Disc) TERMINALS
tinals connect a digital audio cc oe disc pleyer to
the control amplifier. Connect L and R consistently between
conirol amplifier and disc player.
HAUX TERMINALS |
These terminals can connect a third tape deck (playback only), a
second tuner, or other sources. A turntable cannot be connected
io ihe AUX terminals: no RIAA equalization is provided.
E AC OUTLETS |
For your convenience, the General Model provides 6 AC
OUTLETS (5 switched and 1 unswitched) on the rea r panel. The
maximum power geo accepted is:
5 SWITCHED outlets = 200 watts
1 UNSWITCHED outlet = 800 watts
HCONNECTING THE doi AMP
Connect cords from the PRE OUT s of the C-BO to the INPUT —
jacks of your power amnlitier.
mco NNECTINC i THE POWER ANP
When using a oo power amplifier for each channel, make
the alternate hookup in Fig. 1. This allows vou to run ordinary
stereo amplifiers (those without inverting pre outs) monauraliy.
Power amplifiers’ supply capacity limits their bass response.
When a strong bass note enters both channels of the power amp,
total demand for power is high. The PRE OUT INVERT jacks can
solve this Med The hookup shown in Fig. 2. operates the
power amp's left and right channels out of phase, greatly
reducing the demand on the power supply and in many cases
dramatically improving bass reproduction. Be sure lo reverse
connections to one speaker as shown, to bring output back into
phase,
ce
&
ve
BÉ 1
Pre Qut terminals
c PRE QUT emy
Dos ORMAL INV (SRE 1
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Stereo Power Amp. |
Speaker
Stereo Fower Amp.
Leh Speaker

AAA AAA RRERRIRERI
Q POWER SWITCH
Push to turn power on or off. Befare turning on PONE set the
VOLUME control all the way down.
PARAMETRIC EQUALIZER
€) EQUALIZER -= LOW BAND
The LOW band of the Parametric Equalizer may be used to boost
or cut any frequency in the range of 31.5 Hz to 800 Hz by a
se ectable amount. A range of frequencies is affected, centered
on the frequency selected with the FREQUENCY control, The
width of the frequency range to be adjusted is set with the
BANDWIDTH control. The amount of boost or cut is set with the
LEVEL control (— 12 dB to +12 dB).
ue iia
LEVEL De BANIJUVICRIH
Hein LOMAS Can:
-@ EQUALIZER — HIGH BAND
The HIGH band of the Parametric Equalizer may be used to
boost or cut any frequency in the range of 0.8 kHz to 20 kHz by
a selectable amount. A range of frequencies i is affected, centered
on ihe frequency selected with the FREQUENCY control, The
width of the frequency range to be adjusted is set with. the l
Pepa H control. The amount of boost or cul is set with the
EVEL control (— 12.dB to + 12 dB).
MODE SWITCH
Switches between stereo and mono modes.
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lape input :
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© SUBSONIC FILTER
This switch cuts out ultra-low-frequency signals
warped records
ampli
caused ny
or turntable rumbie. Subsonic interference drains
Her power and can even harm speakers if not alte
REC OUT SELECTOR
This switch selects the source for recording. Monitoring the
recording source is optional: the input selector switches can be
set to the same or a different source from that being recorded. If .
your tape deck has three-head monitoring capability, you can
monitor the just-recorded signa! by pressing the corresponding
selector switch.
nuated,

D CONTINUOUSLY VARIABLE LOUDNESS VOLUME CONTROL
AN CONTROL | Adjusts overall sound volume. Calibrated in decibels.
This control allows vou to retain full tonal range at low volume m
levels. Your ear loses sensitivity to high and low frequency (D BALANCE CONTROL
e independent Recording and Listening Examples
; E MM UE i eee : M ; i FAA
Phono Listening toa record with ihe | . ranges at low volume settings. Loudness control provides a Mis contro: adjusts the relative volume ot the let and right
^od T: r i a i i ; > : z it e e M ie ^ R by
speakers while recording an AM — | maximum of 40 dB attenuation, employed according to an speakers, enabling you to compensate for imbalance caused by
——
a:
EE
or
FM
broadcast.
—
1
|
equaiization
curve
based
on
human
hear
ina.
Before
changing
ihe
asymmetry
in
speaker
locations,
furniture
arrangement,
or
in
ihe
Tuner | — Tuner Listening to an FM or AM |
volume setting, reset the Loudness control to the flat position source program.
Pene ® INPUT SELECTOR SWITCHES
broadcast with the speakers while
recording it.
“Phono
Phono
.|Listening
to
a
record
with
the
We
MH
E
TT
These
switches
select
the
listening
source.
ina
;
Flat
position
: | speakers while recording it, ;
|
Phono
|
Tuner
Listening
to
an
FM
or
AM
|
D
PHONES
JACK
One headphone jack is provided. Plugging in the headphones
mutes the audio output to the power amp for private listening.
broadcast with the speakers while
> Tape Dubbing
With a tape deck hooked up to each connector (TAPE 1 and
TAPE 2), set the REC OUT switch to TAPE COPY position 1 e 2
ot 2 » 1. Set the source deck to Play and the receiving deck to
Babord l Set Loudness control to is Turn Loudness control to
A the Fiat position and in- the left to reduce the
. crease the Volume control volume. MATTACHING THE RACK MOU NTING
@
PHONO
TYPEIIMPEDANCE
SELECTOR
to
loudest
level
desired.
| |
m
ADAPTORS
(Optional)
This rotary switch selects the turntable and impedance. The
TR — ———————————————————————''À''Iü €t = f 1) Remove the screws on tha bottom of the unit as shown in tha
leftmost position selects PHONO 2, which requires an MM e T : P ; — diagram and take off the covers which conceal the adaptor
cartricge.
The
five
positions
to
the
right
all
select
PHONO
1:
a
Continuously
Variable
Loudness
Control
Characteristics
mounting holes. The covers can be removed by sliding them 5
l mm down after removing the screws.
NM 2) Verify that the resulting mounting centers of the adaptors will
HT] LH IM match the width of your rack, then attach the adaptors firmly
with screws.
choice of 3 MM and 2 MC settings is offered.
Press this button to engage Tone Bypass, which routes the input
signal so that it is unaffected by the parametric equalizer cir-
cuitry. Recommended for phono input.
Q AUDIO MUTING SWITCH
Press to lower the volume 20 dB without disturbing the Volume
Contrel position (for taking telephone calls, etc.). Press again to
restore normal volume.
* Using these adaptors allows the unit to be used with EIA
standard racks.
Back mount adaptor (right)
E"
esponse (dB)
H
Rack mount adaptor (left)
a I Ress
ii
43
10. 20 50 100 200
7CB0 1k 2k 5k 0k 20k
Frequency (Hz

EE PRACTICAL APPLICATIONS OF THE
PARAMETRIC EQUALIZER
The C-80's Parametric Equalizer offers extensive control over
tone quality. It can be used to adjust for room acoustics, speaker
placement, or personal preferences. A LOW band and a HIGH
band are provided, each with its own adjustable center
frequency, bandwidth, and level (boost/cut). |
1) Compensating for Room Acoustics
i à spectrum analyzer or sound leve! meter is available, you will
be able to accurately flatten your listening room's acoustic.
response using the Parametric Equalizer controls. For example, if
a response dip in the high frequency range (often due to sound
absorption by carpet, drapes, stuffed furniture or even people) is :
detected, use the HIGH Parametric Equalizer band to create a
corresponding response peak of equal but opposite BANDWIDTH
and LEVEL. 22
T appropriate test instruments are not available, however, rough.
compensation can be done by ear. For instance, if the bass -
range sounds too “boomy”, indicating a low frequency peak, try
setting the LOW range BANDWIDTH to WIDE and the LEVEL
control to maximum cut, then sweep the FREQUENCY control
through the bass range until you hear the boominess disappear.
then, finally, readjust the BANDWIDTH and LEVEL controis for
the most natural overall sound.
A MESES
M E mm
c dedi mem
Hz SREGUESICY kHz
> 5 a
i de
MARA WE
LEVEL De DANDNVDTH
2) Eliminating Noise or Hum
it there is an annoying hum or noise during operation of your
system, it can be effectively eliminated using the Parametric
Equalizer. In the case of a high-frequency whine, for example, try
setting the HIGH range BANDWIDTH to the maximum NARROW
position and the LEVEL control to maximum cut, then sweep the
FREQUENCY control through the high frequency range until you
hear the interfering frequency noise disappear. Then, fínally,
readjust the BANDWIDTH and LEVEL controls for the most
natural overall sound.
sued
+g
Response (dB)
TES za iJ
NARROW — NARROW WIDE
LEVEL
“Er
BANDIT
LEVEL
8
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3)
Tailoring
the
Sound
n
The
Parametric
Equalizer
can
also
be
used
to
"shape"
the
sound
i
ta
emphasize
vocais,
balance
the
tonal
effect
between
varying
instruments,
or
create
any
type
of
sound
you
like.
Emphasizing
the
vocals,
or
mid-range
presence,
for
example,
can
be
done
by
setting
the
center
FREQUENCY
to
between
1
kHz
and
3
kHz,
setting
the
BANDWIDTH
controi
to
the
maximum
WIDE
position,
and
then
boosting
the
LEVEL
slightly.
Conversely,
vocals
or
midrange
presence
can
be
slightly
attenuated
by
cutting
the
LEVEL
slightly,
thereby
blending
vocals
into
the
background,
facilitating
conversation
over
the
music
or
enhancing
the
Level
Control
background
music
effect.
POP
EAS
LEVEL B® BANDWIDTH
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FREQUENCY.
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Frequency (Hz)
Bandwidth Control
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Frequency (Hz)
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Before assuming that your amplifier is faulty, check the following | troubleshooting 1i ist which details the corrective action you can take
yourself without having to call a service engineer. If you have any doubts or questions, get in touch with dodi nearest Yamaha dealer.
Power is not supplied even when the
Power switch is turned on.
No sound is heard. -
Plug it in securely.
The power plug is not securely plugged in.
Input switches set incorrectly. Set input switches to source you want to
hear.
Check and secure cannections.
Connect them securely.
The power amp is not connected correctly,
The input terminals are not connected
Securely.
Regulate balance with the control iocated
lV——————— epe ae
| One che anne! sounds stronger than the other | The balance control needs adjustment. .
| below the knobs for loudness and volume.
The Phono rotary switch is iS 8t set tod an A MM Set the switch to MC position,
position,
Sound from MCc cart rtridge is is 5 Jow.
Connect the wire. (Sometimes better
results can be obtained without the wire.) |
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A loud humming sound is heard during
record play.
| Turntable's ground wire is not connected to
_ amplifier's ground terminal.
Set Rec Out to source you are record ing.
—— ——Ü
| Rec Out selector set improperly.
The Audio Mute s witch is on.
Volume is too low even when the Volume -
control is t is turned up.
input Sensitivity/Impedance
FOO Mia 100 ¿41100 ohms, 1 k-ohms
MM dista E e ae 2.5 mV/ 100 ohms, 47 k-ohms
(220, 330 pF)
. DAD, Aux, Tape, Tuner suaeon 150 ) mV/47 k- ohms
Output Level/impedance
Pre Out ....... PUENTE MR ERO DNE: 1.5 V/47 ohms
ger CL SR SE 150 mV/600 ohms
THD (20-20,000 Hz}
Phono MC to Rec Out, 3 V cian ada 0.001 %
Phono MM to Rec Out, V... iii td 0.001%
DAD, Aux, Tape, Tuner to Rec Out, 3 V oon 0.001%
Frequency Response
DAD, Aux, Tape, Tuner... 20 to 20,000 Hz + o. —0.2 dB
RIAA Deviation
Phono MO, MN, ut mischt i RP AUS 20 to 20,000 Hz x 0.2dB
Phono MC, MM ooo. O 10 to 100,000 Hz «0.5 dB
Signal to Noise Ratio
Phono MC (500 «V, Input Shorted)... NETTE 91 dB
Phono MM (5.0 mV, input Shorted)... une 95 dB
DAD, Aux, Tape, Tuner (150 mV, Input Shorted) ccc. 106 dB
Power Supply ........................sssss fcri ad AC 120 VIGO Hz
Power Consumption o... esses 30 W
Dimensions (Wo H x D} uuu. IRAN 435 x 95 x 380 mm
(17-118 x 3- 3/4” x 14-15/167)
Weight M EE ENERO 8.8 kg
(14 lbs. 15 oz.)
Specifications subject to change without notice,

El i
ESE FH E [ HER
CO.
LTD.
HAMAMATSU,
JAPAN
BWgY,G
Printed
in
Japan
&