Free Audio Service Manuals - Free download Rotel RA 212 OM

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FRONT PANEL CONTROLS

aAss CONTROL

When thls knob is turned clock-
vlrlse, bass rs emphasized; when
turned eounterclockvvlse,attenur
ated. wlth the knots set lrl the
center, the flequency response
it llat or normal,

vvlsol

ated

TREBLE CONTROL
When the knob ls turned CIuckr

turned counterclockwise, attEnUr

center, the treouency response
rs flat or normal

BALANCE CONTROL

Thrs knob ls used to edrust the
stereophonic balance When lt re
turned clockvvlse the lelt chan.
nel sound level ls decreased and
when turned counterclockvvlse
the rlght channel sound level

treble ls Emphastzed'l when

With the knob set ln the
decreases.

VOLUME CONTROL
The sound level lneteatet when
the knots is turned clockwlse,
When swltchlng on the power or
the rnput selector, keep lt turned
lully counterclockwrse at rnlnl-
rnutn.

INPUT SELECTOR CONTROL
This is used for selecllon Of pro-
vram sources as applied to tire
PHOND, TUNER and AUX (Er-

POWER SWITCH
A push on the swrtch turns on speo
the arnpllller. The reserve AC tor
outlet on the rear panel ls slmuIr
I tsneously turned on and on,

LA PHONES RECEPTACLE
This lack ls used for connectron
OI headphones to enioy prrvate

lrstenlnp

INSTAL LATID N

IMPORTANT, Do not turn on the power swrtch
oelore cornoletlon or proper connections or the
speaker systems and lnputs.

SPEAKER SVSTEMS

Thlt unlt ls eouloped wlth nulnkrccnnccl law-snaD
terminals lor eonnectrng two sets oi speakers.
Cull ett your than. can ul speakers to the
\ErmlnaIs marked SPKHrI Ensure that your
rlsht speaker ls connected to the terrnlnal marked
@and that the ground (7) termlnal on the rloht
speaker ts connected to the lermmaI marked
9 on the extreme lclt or the terminal block
slmllarly, connect your lelt speaker between
the adlacent SPKR-l terrnlnsls marked@ and
e . If you vvlsh to connect a second pelt ol
speakers, connect thern to SPKR-Z termlnals m
the manner dcscrlbed above

Caution: Erlsure that the speaker leads are
fastened securely to the proper tertnlnals, and
that there are no stray strands vvhtch may cause
shortlng between terrnlnels Ir 2 sets ol speakers
are palyed slrnultanecusly, the lmpedence ot each
unlt should not be less than 3 ohms

TURNTABLE

Model RA 212 ls provldzd vvlth one part ol
PHONO lerrnlnels lot connectloh and playback
ot one turntable

Connect RIGHT output pin lack ol turntable
to thc RIGHT oi the PHONO terminals. and
LEET orn lack to the LEFT of the PHOND terrnl~
nals. The output cord lrorn turntable to be
connected to the PHDNO terrnrnals should be as
short as posslble ln order to mmlmlze loss or
hlgh frequency characterlstlcs. When uslhg a

SPEAKER SWITCHES

operatlorl Of SFKer and sPl 2 speaker systems connected to
the rear panel,

ker system selector swrtchet
lrldlvldual or slmultaneous

notes wdl

or monltorlng The

speaker syvltches may he turned
ollwhen using headphones only

turntable eoutppcd vvrthaoround wlre. cork
nect the ground wlre to he CND terminal oi [his
unlt ll your turntable cornes wlth e DIN plug,
slrnply plug it to the DIN socket PHONO. It
you wtsh to use a cerarntc Canndge, move the
MAG/CER selectorswrtch down to CER posltron
It the canvldge ls magnetic, leave .t at MAG
postlton

AM/FM TUNER

For astereo tuner, the RIGHT and LEFT outputs
on the rear panel ol the tuner should be con-
nected to the TUNER terrnlnals on the rear panel
ol thls unlt. Connect the RIGHT output cord
hunt the tuner to TUNER terminal RIGHT of
thls untt, the LEFT output cord to TUNER
[ermlnaI LEFT.

CONNECTION TO THE AUX TERMI-
NALS

Output of varlous tvpes oi audlo equipment can
be connected to the tennlnals, such as 3 track
tape player

TAPE RECORDER

The TAPE MONITOR ternnnals on the rear panel

ol thls unlt are tor connectlon oi tape recorder

Input and output.

IN (tape olayoack rnputl, or Conneclton oi
tape recorder outputwhen playing back Dre»
recorded tape through thrs unlt,

OUT (tape recovdlng output).,, for connectlon to
the lnput oi a tape recorder tor recording
programs from record player or tuner cunr
nected to thrs unlt.

LouDNESS SWITCH
The human ear becomes less
sensrtlve to low and hloh sounds
when volume level ls low wlth
thls swrtch turned on at low
volume settings, pass and treble
be emphasized lor
natural llstehlne pleasure

mlnels on the rear panel,

PHOND,.,.fcIr llstenlng to rer
cords vlnlh a turntable tour
nectod

TUNER lor llstenlno to AM/
FM broadcatts wrrh a tuner
connected

Aux,, ,for reproduction oi
audlpeornponentspther than
those mentioned abovecon.
nectedtoAUX rnPut ternnnal.

PILOY LAMP
The lamp lrghts up when the
power SleEh is nipped on,

TAPE MONITOR lTAPEl

This Is a monltor svvrtch for a
tape recorder connected to the
TAPE MONITOR terrnlnals on
the rear panel Normally, when
Ilstenlngtp records or FM broad.
casts the svvltch ls kept ln the
SOURCE position

CONNECTION TO THE GROUND (GND)
TERMINAL

when the outputs 0! a recorder player and a tape
recorder are connected to this unit for playback,
any ground wlre from the respeetlve coulpment
should be connected to the ground termtnal or
thrs unlt provrded on the rear panel in order to
prevent hunt and other noises.

CONNECTION To THE Ac OUTLET
Power supply to a record player or a tuner can
he obtarned lrotn thls outlet provlded on the
rear panel ol lhts unlt The outlet .s turned on
and ott vvrth the operation Elf-(he power swrtch
on the Iron! panel. Any euulprnentoonnected to
the outlet should not exceed the lndlcateo power
consumpt.on ratlng oi lsow.

OPERATION

Alter all the connections have been made, turn
on the power switch.

TURNTABLE
ll Connect the turntable output to the PHONO
termlnals on the rear panel ot thls unlt.

2) Set the lnput selector switch on the (tent
panel to the PI-loNO position.

3) Make sure that the tape monltor svlntch ls tn
the SOURCE posltlon,

Al Turn the other control knobs to obtain the
sound level deslred

. REAR PANEL

CONNECTIONS

O ,

=3
- oO

STEREO TURNTABLE
(MAC OR CERAMIC)

MAG/CER SELECTOR SWITCH

SrTRACK STEREO PLAYER

STEREO TUNER

AC OUTLET

-'_-_
STEREO T'AIPE IRECORDER
I

OUT PUT INPUT

LEFT

SPEAKERS-7 RIGHT
+ c +

SWITCHED

+ ,
SPEAKERS-2

:10

Ac POWER CORD

AM/FM TUNER

ll Connect the tuner output to the TUNER
termlnals on the rear panel oi thls u

2) Set the input selector svvrtch on the iront
Panel to me TUNER Posmon.

3) Make sure that the tape monltor swltch ls tn
the SOURCE positron,

4) Turn the other control knobs to pbtaln the
desired level alter the tuner has been tuned In
to the deslred statlon

TAPE RECORDER
Connect the tape recorder lnput and output to
The TAPE MONITOR termlnals on The leaf panel
Of Ihls unit.

RECORDING

ll Make sure that the tape monltor swnch on

the lront panel ts set rntne SOURCE posmon

Set the tnptrt selector svvltch to one pl the

program source oosltlons. PHONo, TUNER

or AUX.

al Pertcrm recordlng operotlon oi the tape rer
corder to record the desired program source
through thls unlt

PLAYBACK

ll Press the tape monltor swrtch and set ll ln
the MONITOR posltlon. (In the case ol plav'
back, the Input selector svvltch can be kept in
any posltlon as it ls overrldden at thts Dumas
tron.)

2) Perform a playback operation of the tape
recorder and control the other controls on
thls unlt to may tape playback at the deslred
sound level

STEREO HEADPHONES
Just lnsert to the PHONES rack to enroy prlvate
ltstenrng

TONE CONTROLS

BASS. JO! control oi boss notes,

TREaLE. tor control oi treole notes.

Even when the tone controls are set ln the center
pea-hon. lr ts not always possrcle tc ahtaln an
acoustlcally llat response dependan on program
sources and acoustlc characteristlcs ot the
lrstehlno roprn The tone controls enable the
listener to have an acoustically Ilat response.
However. an excesslve boost oi cats or treble
notes may produce unpleasant results, so the
tone controls should be used only to compensate
tor acoustic reourrements,

INSTRUCTION FOR OPERATION

LOCATION OF OPERATION

Model RA 212 ls designed With one Cunslderar
trons tor heat radlatron

Huwever, rt should not be .nstallad rn an alrtrghl
cablnet or exposed near heat sources.

CONNECTION 0F SPEAKERS
The RArQlZ arnpltirer ts specllled at the load
lrnpedance of 4715 ohms Most speakers are

rated at 5 ohms.
It used at below 4 ohms, thls unlt may burn out
or glve rise to rnal-tunctionlno oi this unlt when
used continuously tor conslderable tlrne Also. do
not use speakers rated below 8 ohms, when
playlno two palr pt speaker systems slmultoneousr
ly

HUM AND NOISE

In any lnph ltdultty lrnlullatlort. hum may be
caused by the lnterconnectlon Of a record player,
tuner and ampl ,as a result or the came; and
drlterent grounds, ll hurn ls experienced vvrth
your anlpllller, dlseonnect everything but the
speakers from the unlt. ll hurn persists, reverse
the Ac Ilne cord Plug tn the record player and
ll hum appears, reverse the record player power
plug and connect a slngle lead Irom the record
player chassts to the ground post on the rear
chassls Connect your other devices tn thls

Hum may also be lndllCEd by detectlve
connectlnc cables or by runnlng these cables too
close to a strong Ac Ileld.

Rotel RA 212 OM

Extracted text from Rotel RA 212 OM (Ocr-read)

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