Yamaha C-65 Owner's manual

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Yamaha C-65 Owner's manual | Manualzz
OPERATIONS ........
TROUELESHOOTING
SPECIFICATIONS ....
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qe To prevent fire or shock | hazard, do not expose this appliance to rain |
A. Mg | ormoisture. —
SES LIE REITER
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
COVER (OR BACK). NO USER-SERVICEABLE
PARTS INSIDE, REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
e Explanation of Graphical Symbols
The lightning flash with arrowhead
symbol, within an equilateral triangle,
is intended to alert you to the presence
of uninsulated “dangerous voltage”
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
you to the presence of important
instructions in the literature accom-
panying the appliance.
operating and maintenance (servicing) -
SAFETY INSTRUCTIONS
1 Read Instructions — All the safety and operating
instructions should be read before the appliance is
operated.
2 Retain instructions — The safety and operating
instructions should be retained for future reference.
3 Heed Warnings — All warnings on the appliance
and in the operating instructions should be adhered
to. |
4 Follow Instructions — All operating and other
instructions should be followed.
5 Water and Moisture — The appliance should not
be used near water — for example, near a bathtub,
washbowtl, kitchen sink, laundry tub, in a wet
basement, or near a swimming pool, etc.
6 Carts and Stands — The appliance should be
used only with a cart or stand that is recommended
by the manufacturer. |
{Wall or Ceiling Mounting — The appliance should
be mounted to a wall or ceiling only as recommended
by the manufacturer.
8 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
cabinet that may impede the flow of air through the
ventilation openings.
9 Heat — The appliance should be situated away
from heat sources such as radiators, stoves, or other
appliances that produce heat.
10 Power Sources — The appliance should be
connected to a power supply only of the type
described in the operating instructions or as marked -
on the appliance.
11 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.
12 Cleaning — The appliance should be cleaned
only as recommended by the manufacturer.
13 Nonuse Periods — The power cord of the
appliance should be unplugged from the outlet when
left unused for a long period of time.
14 Object and Liquid Entry — Care should be
taken so that objects do not fall into and liquids are
not spilled into the inside of the appliance.
15 Damage Requiring Service — The appliance
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 appliance; or
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
damaged. |
16 Servicing — The user should not attempt to
service the appliance beyond those means described
in the operating instructions. All other servicing should
be referred to qualified service personnel.
17 Power Lines — An outdoor antenna should be
located away from power lines.
18 Grounding or Polarization — The precautions
that should be taken so that the grounding or
polarization of an appliance is not defeated.
1
To ensure the finest performance, please read this
manual carefully. Keep it in a safe place for future
reference.
2 .
Install your unit 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). To prevent fire or electrical shock, do not
expose to rain and water.
3
Do not operate the amplifier upside-down. lt may
overheat, possibly causing damage.
4
Never open the cabinet. If a foreign object drops into
the set, contact your dealer.
5
Do not place records or other objects on top of the
amplifier; this will block the ventilation holes, cause
the internal temperature to rise and may result in a
failure. | |
6
Do not use force on switches, knobs or cords. When
moving the set, first turn the unit off. Then gently
disconnect the power plug and the cords connecting
to other equipment. Never pull the cord itself.
7
Do not attempt to clean the unit with chemical
solvents; this might damage the finish. Use a clean,
dry cloth. |
8
Be sure to read the “troubleshooting” section on
common operating errors before concluding that your
unit is faulty. |
9
Do not connect audio equipment to the AC outlets on
the rear panel if that equipment requires more power
than the outlets are rated to provide.
TURNOVER FREQUENCY
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YAMAHA NATURAL SOUND STEREO CONTROL ANMPLIFIER C-85
@ POWER switch and indicator
Press to turn power on or off. When the power is
supplied, the indicator above the switch lights.
€ Tone controls
TURNOVER FREQUENCY controls
Use these controls to select the turnover frequency at
which the frequency level can be adjusted.
LEVEL controls |
Use these controls to adjust the sound quality. When
these controls are set to DEFEAT, a flat frequency
response can be obtained.
@ MODE selector |
Switches between stereo and mono modes.
О АННО
L BALANCE В
ED SUBSONIC FILTER switch
This switch cuts out ultra-low-frequency signals
caused by warped records or turntable rumble.
Subsonic interference drains amplifier power and can
even harm speakers if not attenuated.
GO 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 signal by pressing the
corresponding TAPE input selector switch.
() PHONO selector |
This selector selects the turntable and impedance.
The leftmost position selects PHONO 2, which
requires an MM cartridge. The five positions to the
right all select PHONO 1: a choice of 3 MM and 2 MC
setting is offered.
Y TONE BYPASS switch and indicator
Press this button to engage tone bypass circuitry,
which routes the input signal so that it is unaffected
by the tone control circuitry.
6) AUDIO MUTING switch and indicator
Press to lower the volume 20 dB without disturbing
the Volume Contro! position. Press again to restore
normal volume.
€) Continuously Variable LOUDNESS control
This control allows you to retain full tonal range at low
volume levels. Your ear loses sensitivity to high and
low frequency ranges at low volume settings.
LOUDNESS control provides a maximum of 40 dB
attenuation, employed according to an equalization
curve based on human hearing.
To adjust the LOUDNESS control to your listening
level, first, set the control to the FLAT position,
increase the VOLUME control to your listening level,
then turn the LOUDNESS control counterclockwise to —
reduce the volume level.
CONTINUOUSLY VARIABLE LOUDNESS
CONTROL CHARACTERISTICS
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Frequency (Hz)
() VOLUME control
Adjusts overall sound level.
U) BALANCE control
The control adjusts the relative volume of the left and
right speakers, enabling you to compensate for
imbalance caused by asymmetry in speaker
locations, furniture arrangement, or in the source
program.
e input selectors
These switches select the listening source.
(P PHONES jack |
Plug in the headphones for private listening.
Be sure to connect the left (L) and right (R) channels consistently from component to component.
| SWITCHED UNSWITCHED
Turntable | (200W max) (800W max)
(with MM or MC cartridge) Turntable (with MM cartridge) Tape deck 1 |
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CAUTION |. use ONLY WITH THE -
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Compact disc player Speaker
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EB CONNECTING THE POWER
AMPLIFIER
Connect the PRE OUT jacks of the unit to the INPUT
jacks of your power amplifier.
HE CONNECTING A TURNTABLE
The unit accepts two turntables. The PHONO 1 jacks
can accept either an MM or an MC cartridge; the
PHONO 2 jacks are for MM only. The front panel's
PHONO selector selects the turntable. The leftmost
position selects PHONO 2, which requires an MM
cartridge of 47k-ohms (220 pF) impedance. The five
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 PHONO jacks is the
PHONO GAIN switch — a small red button. Use this
switch tc refine volume control with high output level
cartridges. Press the button in to lower the output
signal by 10 dB; press again to release the button and
return the output signal to normal.
- Plug each turntable’s output cords into the
appropriate PHONO jacks. Connect the turntable’s
ground wire to the GND terminal. (This normally
produces minimum hum, but in some cases
disconnecting the ground wire gives better results.)
B CONNECTING A CD PLAYER
Connect a compact disc player to the CD jacks of the
control amplifier. Connect L and R consistently
between control amplifier and disc player.
B CONNECTING A TUNER
Connect cords from the tuner's OUTPUT jacks to the
TUNER jacks of the amplifier.
B CONNECTING AUDIO OUTPUTS OF
A VIDEO RECORDER
Connect the audio output of a video recorder to the
VIDEO jack of the control amplifier.
E CONNECTING A TAPE DECK
Two tape decks can be connected to this amplifier's
two sets of jacks (TAPE 1 and TAPE 2). Connect the
TAPE PB jacks to the tape deck's LINE OUT jacks,
and the REC OUT jacks to the deck’s LINE IN jacks.
BM AC OUTLETS
For your convenience, the unit provides 6 AC
QUTLETS (5 switched and 1 unswitched) on the rear
panel. The maximum power consumption accepted is:
5 SWITCHED outlets = 200 watts
1 UNSWITCHED outlet = 800 watts
E TO LISTEN TO PROGRAM SOURCE
. Press the POWER switch.
Select the program source to be listened to with
the input selectors.
When the PHONO input is selected, set the
PHONO selector according to the cartridge used.
Play the program source.
Adjust the VOLUME control and tone controls.
E TO RECORD PROGRAM SOURCE
—
. Press the POWER switch.
Select the program source to be recorded with the
REC QUT selector.
When PHONO input is selected, set the PHONO
selector according to the cartridge used.
Play the program source to be recorded and set
the tape deck connected to TAPE 1 and/or TAPE
2 jacks. |
To listen to another source during recording, select
the program source to be listened to with the input
selector and play the program source.
Adjust the VOLUME control and tone controls.
The setting of these controls does not affect the
recording sound.
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wo
@ TO DUB TAPES
—
Press the POWER switch,
. Set the REC OUT selector to TAPE COPY 1 » 2
ог 2 № 1.
. When the REC OUT selector is set to TAPE COPY
1 I» 2, use the tape deck connected to TAPE 1
jacks tc play and the tape deck connected to
TAPE 2 jacks to record.
When the REC OUTselector is set to TAPE COPY
2 > 1, use the tape deck connected to TAPE 2
jacks to play and the tape deck connected to
TAPE 1 jacks to record.
. To listen to another program source during
dubbing, select the program source to be listened
to with the input selector.
. Adjust the VOLUME control and tone controls.
The setting of these controls does not affect the
recording sound.
EB ATTACHING THE RACK MOUNTING
ADAPTORS (Optional)
1) Remove the screws on the bottom of the unit as
shown in the diagram and take off the covers
which conceal the adaptor mounting holes. The
covers can be removed by sliding them 5 mm
down after removing the screws.
2) Verify that the resulting mounting centers of the
adaptors will match the width of your rack, then
attach the adaptors firmly with screws.
* Using these adaptors allows the unit to be used
with EIA standard racks.
Rack mount adaptor (right)
Te
Rack mount adaptor (left) >
Before assuming that your amplifier is faulty, check following troubleshooting list 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 your nearest YAMAHA dealer.
Power is not supplied even when the POWER
switch is turned on.
e The power cord is not securely plugged in.
Plug it in securely.
No sound is heard.
® |nput selectors set incorrectly.
Set input selector to source you want to hear.
e The power amplifier is not connected correctly.
Check and secure connections.
® The input jacks are not connected securely.
Connect them securely.
One channel sounds stronger than the other.
® The BALANCE control needs adjustment.
Adjust the BALANCE control.
Sound for MC cartridge is low.
® The PHONO selector is set to an MM position.
Set the switch to MC position.
A loud humming sound is heard during
record play.
e Turntable's ground wire is not connected to
amplifier's GND terminals.
Connect the ground wire. (Sometimes better
results can be obtained without grounding.)
Unable to record.
® REC OUT selector set improperly.
Set REC OUT selector to source you are recording.
Volume is too low even when the VOLUME
control is turned up.
® The AUDIO MUTING switch is on.
Turn the AUDIO MUTING switch off.
J)
input Sensitivity/Impedance |
Phono 1 MC .......... FO 100 4V/100 ohms
MM... 2.5 mV/47 k-ohms
(220, 330 pF)
Phono 2 MM ................. 2.5 mV/47 k-ohms
CD, Video, Tape, Tuner ..... 150 mV/47 k-ohms
Input Sensitivity (New IHF)
Phono MC iin ‚33V
11111 1 EEE 0.83 mV
CD, Video, Tape, Tuner .................. 50 mV
Max. input Signal (1,000 Hz, 0.01% THD)
Phono MC ................ ol. 20 MY.
Phono MM ...................00.0 nm... 500 mV
Output Level/Impedance
Pre Qut ..............eeeceerercooo 1.5V/47 ohms
AT 150 mV/600 ohms
Max. Voltage Output (20 — 20,000 Hz, 1% THD)
PreOut EEE 8.5V
Headphone jack
Rated Output/Impedance Cee .. 6V/100 ohms
(0.01% THD, 1,000 Hz)
THD (20 to 20,000 Hz)
Phono MC to Rec Out, 3V .............. 0.002% -
Phono MM to Rec Qut, 3V .............. 0.001%
CD, Video, Tape, Tunerto —
Pre Out, 3V ................eeeerecere.e. 0.001%
Intermodulation Distortion |
CD, Video, Tape, Tuner ........ enero. 0.02%
(5V Output, Tone Bypass ON)
Frequency Response (Tone Bypass ON)
CD, Video, Tape, Tuner ............ +0, —0.2 dB
(20 to 20,000 Hz)
RIAA Equalization Deviation
Phono MC, MM ........ 20 to 20,000 Hz +0.2 dB
Phono MC, MM ....... 10 to 100,000 Hz £0.5 dB
Signal to Noise Ratio (IHF A Network)
Phono MC (500 „У Input Shorted) ....... 90 dB
Phono MM (5.0 mV Input Shorted) ...... 95 dB
CD, Video, Tape, Tuner |
(150 mV Input Shorted,
Tone Bypass ON) ....................... 106 dB
Signal to Noise Ratio (New IHF) |
Phono MC .................. aaa 80 dB
Phono MM ...............e o _eeorcecccaa 83 dB
CD, Video, Tape, Tuner ................. 103 dB
Residual Noise (IHF-A-Network) ........... 1.5 uv
Channel Separation |
Phono MM (Input shorted)
40 HZ LL... cena Lean .………......... 85dB
1,000 Hz .... 0 0 80 dB
10,000 Hz ....................e.eeneccaco. 70 dB
Video, Tape (5.1 k-ohms)
40 HZ EEE 85 dB
1,000 Hz ..... e aa aa nca sea na 00e 70 dB
10,000 Hz ..............…..….…............-. BO dB
Tone Control characteristics
BASS |
boost/eut ............................ +10 dB
turnover frequency ............ 100 ~ 500 Hz
TREBLE |
hoost/cut .................. cc... +10 dB
turnover frequency ......... 1,000 ~ 5,000 Hz
Filter Characteristics
Subsonic ..................... 15 Hz, —12dB/oct
Continuous Loudness Control (Level-related
equalization)
Attenuation ................... 40 dB (1,000 Hz)
Audio Muting .................._ ._eseercro. —20dB
Gain tracking error (0 — —60 dB) .......... 2 dB
Power Supply ........................ 120V, 60 Hz
Power Consumption ........................ 30W
AC outlet |
Switched x5 ........................ 200W max.
Unswitched x 1 ............ SU 800W max.
Dimensions (WxHxD) ...... 435 x 95 x 380 mm
(17-1/8 x 3-3/4 x 14-15/16 in.)
Weight ............................. 6.8 kg (15 Ibs.)
Specifications subject to change without notice.
10
SINCE 1887
NIPPON GAKKI CO., LTD. HAMAMATSU, JAPAN
BWgbY @ Printed in Japan
VB08060-1 .

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