Marantz 2245 Specifications

Model 2245StereoohonicBecdiver

Figure 4. AM Ferrite-rod AntennaANTENNA ATTENUATORThe ANTENNA ATTENUATOR can be switchedinto or out of the anlenna circuit. Use theANTENNA ATTENUATOR

position. lJ Flvl or A[4 is selected, rotale theGvro-Touch TUNING knob until the desiredstation is tuned. Adjust the volume control forcomJortable I i

MAgru fflruTR$t$ANI} SWITCHESSELECTOB SWITCHThe selector switch selects the program source forlistening or recording. lf a tape recorder's pla

DUBBING INThis jack has a built in switch which automaticallydisconnects the rear panel TAPE lN jacks whenyou insert a standard 3 conductor phone plug

then prepare the external recorder to beqin recording before the main recorder is about 10 run out oftape. As soon as the external recorder is star

oDuoouuc)-c:(to oGl+Touu(_louuo::i-i i'a3:-:-r a:;Fi:filtffiFigure 8. Connection oiagram

TECHNIEALDESCRIPTIONGENERALFiqure 9 is a block diagram of the [/]odei 2245Receiver showing the main functional elements andinput and output signal ro

cgenerated by a local oscillator. This mixer convertsthe carrier frequency to the 10.71\,4H2 intermediatefrequency. Care{ul attention to its therm

selectively to the desired source.TAPE SIGNALSWith the exception o{ tape input, all high leveinputs are {ed directly to the s€lector switch. Tapeinp

r 10conlrol at maximum, the over all voltage gain fromany h iqh level input to the loudspeaker terminals isapproximately 40d8.BALANCE CONTROLThe balan

TONE AI\4PLIFIERThe TONE A[,4PL|FlER's circuitry uses a continuouslv variable R-C {eedback type configuration. Figure 11 shows the frequency resp

TECHNICAT SPECIFICATIONSAUDIO CIRCUITS:Rated continuous (RI\4S) power outpulper channel, both channels operating;imultaneously, 20 Hz to 2O,OOO Hz . 4

TYPICAL PEBFORMANCE CURVEodB1020304050607080\)100*V100mVFi{üre i3. FIl/I CharaGteridicsfigüre 14. Stereo Separatioo0dBJffi ffi ffi &$$iiffi ffi ff

Figure 15. Harmonic DistonionFigure 16. Frcqüency Besponse+20 dB26-8101218lOHzIOOHzl KHzIOKHzIOOKHz

SERVICE NOTESREPAIRSOnly the most competent and qualified servicetechnicians should be allowed to service the Mar-antz Model 2245 Receiver. The Maran

IIIOTEcc

The Sound of N4arantzis the compelling warmth o{ a Stradivarius.It is a dancing flute, a haughty bassoonand the plaintlve call of a one French horn.Th

rrrä-roArnt-"Model 2245StereoohonicRecriiverMARANTZ CO,, INC..P.O. BOX 99.SUN VALLEY CALIFORN IA.91352A WHOLLY-OWNED SUBSIDIARY OF SUPERSCOPE IN

Elt,seE.üaürgüErWe sound betler.WARRANTYMaranrz Company, lnc-, prosdly warrants your Maränlz prodüct io be free o{ manulacturins defectsin material an

TABLE OF CONTENTSPreparation for UseRear Panel ConnectionsPhonoTape lnTape OutAuxiliaryOuadradiall\4ain ln and Pre OutLoundspeaker SystemsAnlenna At

F{3HüWffiMMFor optimum performance and enjoyment fromVour l\,4odel 2245 Sleteo Receiver, please srudythese instructions carefLllly. lnstallation and

CPHONOI he phono jdcks are intended lor use withmagnetrc phono cartridges requiring a standard47,000-ohm resistive load. lf hum is heard whenplaying

AUXILIARYHigh level AUX input iacks are for miscellaneoussources such as extra tape players with selfcontained playback preampl if iers, phono cartrid

C(Note: Close inspection of ständard zipcord will'pvaal \orp lorr o'codinq o'1 lhp r1'ulatron,4,q,,rioqF o' g'oovp on on