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Model 2230
Stereop-honic
Receiver
MARANTZ CO.,INC.20525 NORDHOFF STREET,CHATSWORTH, CALIFORNIA91311
A WHOLLY-OWNED SUBSIDIARYOFSUPERSCOPE INC.,CHATSWORTH, CALIFORNIA91311
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TABLEOFCONTENTS
Preparation forUse
Rear Panel Connections
Phono
Tape In
Tape Out
Auxiliary Quadradial
Main In and PreOut
Loundspeaker Systems
FM Antenna
Antenna Attenuator
AM Antenna
Connection toAC Outlet
Convenience Outlet
Simplified OperatingProcedure
Tuning Meters
Tuning Mono Switch
Tape Monitor Switch
Loudness Switch
Low Filter Switch
Hi Filter Switch
Muting SwitchandLevel Control 2
2
2
2
3
3
3
3
4
5
5
5
5
5
6
6
6
6
6
6
6
6
Muting Circuit
AM Tuner
Selector Switch
Tape Signals
Tape Monitor Switch
Phono Signals
Mono Functions
Control Circuits
Balance Control
Volume Control
Tone Amplifier
Hi-Low Filters
General
Serv iceNote 12
12
12
13
13
13
13
13
13
13
13
13
13
14
Main. Controls andSwitches
Selector Switch
Balance Control
Volume Control
Bass MidandTreble Controls
Main-Spkr-Remote Switch
Front PanelJacks
Dubbing Out
Dubbing In
Stereophones
Some Suggestion onUsing TapeRecorders
with Your Model 2230
Recording andPlayback
Recording
Playback Making TwoRecordings Simultaneously
Recording aLong-Duration Program
Copying andEditing
Converting YourStereo System to
4- channel
Technical Description
General
Functional Description
Front End
I F Stages
Limiter
FM Streo Demodulator 7
7
7
7
7
7
7
7
7
8
8
8
8
8
8
8
9
9
11
11
11
11 12
12
12
liST OFIllUSTRATIONS
1.Rear Panel Connection Facilitiesand
Adjustments 2
2. Loudspeaker SystemConnections 3
3. FM/AMAntenna Connection 4
4. AMFerrite-rod Antenna 5
5. Front PanelControls andJacks 7
6. Stereophone Plug 8
7. Arrangement ofTwo Tape Recorder 9
8. Connection Diagram 10
9. Functional BlockDiagram 11
10. Pack
ingInstructions 14
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LEFTCHANNEL
COMMON
RIGHT CHANNEL
Figure6.Stereophone Plug
STEREOPHONES
This jackaccepts thestandard 3-conductor phone
plug used onstandard stereoheadphones (see
Figure 6).Itisinternally connected tothe power
ampl ifier section through isolation resistorsto
provide adequate soundlevelwithpopular low
impedance headphones aswell aswith high
impedance ones.Twoormore setsofheadphones
may beused withtheaidof"Y" connectors. The
headphone jackoutput isnot affected bythe
MAl N-SPKR-R EMOTEswitches.
SOME SUGGESTIONS ONUSING TAPE
RECORDERS WITHYOUR MODEL 2230
There areseveral waystoconnect andoperate tape
recorders withyour receiver. Toavoid confusion in
the following discussion, referenceto"tape
monitoring" assumesthattherecorder isequipped
with separate recordandplayback headsand
separate recordandplayback preamplifiers. To
further simplify thisdiscussion, atape recorder
normally connected tothe rear panel facilitieswill
be referred toasthe "main" recorder. Aseparate
recorder normally connected tothe front panel
jacks willbereferred toasthe "external" recorder.
This general arrangement isillustrated inFigure 7.
RECORDING ANDPLAYBACK
The simplest systeminvolves onlyoneta.pe
recorder, whoseinputsareconnected tothe TAPE
OUT jacks (ontherear panel) andwhose playback
outputs areconnected tothe TAPE INjacks. An
equally simplearrangement usingthefront panel
facilities involvesconnecting theline inputs tothe
dubbing OUTjackandtheplayback outputstothe
dubbing INjack. RECORDING
To make arecording, setthe selector switchtothe
desired program sourceandputtherecorder into
the "record" modeofoperation. WiththeTAPE
MONITOR pushswitchinthe "out" position, the
original program sourcewillbeheard. Bydepres
sing theTAPE MONITOR pushswitch (monitor),
the "results" ofthe recording whileitisin
progress, willbeheard. Aword ofcaution: With
the tape recorder inthe record mode,becareful
not toplace theselector switchinthe "TAPE"
position whentheTAPE MONITOR pushswitchis
"out." Doingthisfeeds therecorder's output
signals backtoits input terminals, establishing a
reverberating loop.Ifthe recorder's playbacklevel
happens tobeset higher thanitsrecord level,the
resulting echoor"howl" willrapidly increase in
volume level.Noharm willbedone tothe recorder
or the receiver, buttheaudible effectfromthe
loudspeakers canbeannoying.
PLAYBACK
To listen toatape already recorded, putthe
recorder inthe playback modeofoperation and
turn theselector switchto"TAPE". Whenplaying
tape onanexternal recorder, therecorder's
playback outputsshouldbeconnected tothe __
dubbing INjack onthe front panel. Whenplaying a
tape onthe main recorder, m~kesurenot~ing is
plugged intothedubbing INJack,.othe.rwlse the
main recorder's playbackoutputsWillbeInternally
disconnected inthe receiver.
MAKING TWORECORDINGS
SIMULTANEOUSLY
Th iscan bedone byconnecting twotape recorders
to the receiver, asshown inFigure 7.To monitor
the main recorder, pulltheplug outofthe dubbing
IN jack anddepress theTAPE MONITOR push
switch.
RECORDING ALONG-DURATION PROGRAM
With twotape recorders connected tothe Model
2230 asshown inFigure 7,acontinuous recording
can bemade without losingpartsofthe program
during reelchanges. Forexample, withtheselector
switch settothe desired program source,andthe
TAPE MONITOR pushswitch inthe "out" po
sition, starttherecording onthe main recorder,
then prepare theexternal recorder tobegin record
ing before themain recorder isabout torun out of
tape. Assoon asthe external recorder isstarted,
ample timewillbeavailable toreload themain
recorder inpreparation forfurther recording. This
process canberepeated indefinitely withboth
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