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nilox INSTRUCTION MANUAL- MODEL G 36 With your Stereo-Taperecorder REVOX G 36 you get an instrument of the highest precision for both monaural. and stereophonic recording. This recorder has some unique features. In order to utilize all the posslbillties it offers , you will need an exact knowledge of these operating instructions . We therefore recommend studying this instruction manual bef ore using your recorder This will avoid failure and help protect your machine from accidental damage.
PACKING MATERIAL Manufactured by: the complete packinq for possible re-shipment. rhe REVoX G36 raperecorder is a heavy plece equipment and would be seriously demaged if forSave of warded in an improvised packing.
Gontents 1. 2. 3. 4. 5. 6. 7, 8. 9. 10. I1. PositionofControls. Stereo - Mono -- Two Track - Four Track Preparing the Recorder for Use. Preparation for Recording Recording Play-back Use as a Stereo Recorder .'...'.. 6 I .... ',.......'20 ....'.,,,2I . .. . Special Features: Re-Recording, Multiplay and Echo Effects. anAmplifier Maintenance TechnicalSpecifications Use as 4 16 23 ' 28 30 ......... .. '..... 31 ...
1.
I 2 3 4 5 6 7 B 9 l0 11 I2 13 14 Supply reel Tape guide pln Take-up reel Position indicator (3 digit counter) Counter re-set Push button: button: Push button: Push button: Push button: Black button depressed: Red button depressed: Push Fast rewind Fast forward PIay Stop Recording Tape speed 3 3/4 ips Tape speed 7 t/2 ips Both buttons in mid-position: Capstan motor switched off Recording on Channel I Black button depressed: ( lefthand channel, upper tape section Recording on Channel I1 Red button depre
2. TwoTrack Stereo-Mono The REVOX G 36 is a stereo taperecorder, but of course monaural recordings are possible as weII. pacity is doubled. The diagrams wiII allow for a better understanding of the operating instructions, and at the In the latter case tape ca- same time explain the difference between the two track and four track models. Track I Track 2 On the two track taperecorder the tape is divided into two equal tracks .
FourTrack Trdck Track Channel 3 2 1I TauueqS oaletrs --------__-* II J IauuPqC oarols 1- frdcklChdnneil-------------) 'Iräck II lauueqc t <-J Channel is recorded on two tracks. After interchanging the reels, the other two tracks may also be used for stereo recording. As usual stereo -----------J stereo Channel I Stereo Like the two track version, the four track machine possesses two channels. Here, however the tape is divided into four tracks.
3. Preparing the Recorder for Use a o OFoCo (o ö a JC.
After removing the rear cover, the power cabl.e and the sockets become accesslble. 31 32 33 34 35 36 37 38 39 Microphone input channel Microphone tno", "rr""""i I it I ] unbalanced Aux. (Diode) input channel I I I untldldnced Aux.
Preparing the Recorder for Use 41 The powerline plug is inserted in socket 42 during transport. Before connecting to the mains, check the correct settlng of the voltage switch (set to 22OY by the factory). In order to seJ.ect another voltage, press fuse holder 41 by means of a coin and turn to the correct posltion. If turned clockwise to the end, the fuse may be changed. Check if the correct fuse is in the fuseholder. Use a miniature fuse 5 x 20mm (slow-blow) : 0.6 A for 220/240V 1.
45 Tape speed Pushingbuttons I1 or 12 selectstape speed 3 3/4ips or 7 I/2 ips. The higher speed gives highest audio quality ; the lower speed doubles playing time. WARNING ]i and 12 for tape speed selectj.on must not operated with power switch 15 in the ON position. Push buttons The power switch be is operated by dial 15 which must be turned clockwise for turning the recorder ON.
Preparing the Recorder for Use ..,.,.,:.;'F*i ,,.ta,'':*,*l ::i]:r.:,: '., WM (-----. ^1 t2 t-_ ((D) $, $, @, Threading the tape Put full reel on the left, empty reel on the right turntable. See that the inner slots of the spool fit well onto the keys of the axle. Lock the spool by a twist of the upper center axle' Maximum spool size is I0 Y2".
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Preparing the Recorder for Use Interchanglng the reels -' On all monaural recordings, and on stereo recording on the four track model, only a part of the tape is used (see pages 6 and 7 ). In order to use the other part, the reels simply have to be interchanged after the tape has been play- ed to the end. If a small spool is used up to approximately 7 lnches. tape tension switch 25 has to be operated. The switch lever comes out of the head cover, thus preventing the use of a big spool by 9rror.
Manipulation Tape transport ls controlled by the push button assembly 6-10. The push buttons will select the following operating conditions : 6 Fast rewlnd 7 Fast forward B 9 PIay Stop 1.0 Record. The tape does not move, but the recording Ievel is already indicated on the Vu-Meters ( stand-by recording ). 8+10 Recording push buttons 8 and 10 are blocked with the push buttons 6 or 7 down.
4. Preparation for Recording As described on pages 6 and 7, the tape width is divided into two or four tracks. Channel selection switch 13,/14 effects choice of the desired track. If push button i3 (biack) is depressed, inputs are connected wlth channel I (two track model: track l,.four track model: track I and, after having interchanged the reels. track 2 ).
38 37 Selection of audio sources Crystal or moving coil (dynamic) microphones may be plugged into sockets 3 I and 32 . An additional line transformer has to be used if the lmpedance of the microphone is 50Qor 2001f. Your local dealer wl]1 be able to recommend a good quality microphone. Sockets 33 and 34 may be connected by means of an audio cable with the diode output of a radio. Other audio sources c.an be used as well.
Preparation for Recording 222l t9 20 Record leveI indication The record leve1 may be controlled before the tape moves ( neither buttons B and 10 depressed ). For this the dial switches 19 and 21 must be set to seIect the input to which an audio source is connected. The record level controls 20 and 22 are then to be adjusted for proper level indication on the VU-Meters.
Mixing The mixing procedure may be illustrated in the following example: You are about to record from a phonograph record and you wish to introduce it orally, to mentj.on the title and to say something about the musicians. You are recording on channel I, so button 13 is depressed. A recordplayer is attached to socket 35, and a microphone to socket 32. Whenthe tape is in motion for recording, buttons I and l0 are depressed, control 22 is opened, and the Ievel of the microphone is monitored on VU-Meter 23.
5. Recording a tape is achieved by pressing buttons B and 10 simultaneously. During the recording process, any previously recorded material will be erased automatically. Therefore a short play-back check of the tape before recording is recommended. Recordrng of Recording monltoring If the dial 17 (channel selection switch) is set to position Input I or II the quality of the incoming signal may be monitored. Volume ls controlled by knob lB, bass boost by knob 16.
6. Play-back To start play-back, push button B. Play-back with internal amplifier Only the controls on the lefthand slde are relevant; controls on the righthand side have no j.nfluence on play-back. Disc 17 selects the play-back channel (Tape i = channel I, Tape II = channel iI, Tape I + II = both channels simultaneously). Vo]ume is controlled by knob 18, bass boost by knob 16. If knob 16 is in zero position, frequency response wil] be flat ( linear). Byturning knob 16 clockwlse bass volume is boosted.
Play-back Use of an external speaker An external speaker with an impedance of approx. 5Sl - 8C), with a cab.le fitted with 4 mm banana plugs,may be plugged in to socket 42. lnsertingthe plug all the way cuts off the built-in speaker,' while half-way lnsertlon permits operation of both. Low-impedance earphones may be used in the same way. 46 45 Play-back with an external amplifier In order to obtain highest tonal quality or to playback in Iarge areas, an additional, external amplifier may be desired.
7. Use as a Stereo Recorder This instruction manual cannot be expected to explain the complete theory of stereo sound. We suggest consulting the special literature. Only the stereo operation of the REVOX G 36 .:-i 4 "","" '.,- | will here. 6"1*- Stereo recording As mentioned, buttons 13 and 14 must be in their mid-position. As in mono recording, recording stand-by is obtained by depressing button 10,' recording by depressing buttons 8 and 10. The in- rl:1r",...
Use as a Stereo Recorder Selection of audio sources This is the same as the selection of sources for mono recording, as earlier described. In addition, check that the lefthand channel audio cable plug is always inserted in socket I, the righthand channel one into socket II. FM Stereo recording When recordlng FM Multiplex system transmissions, the subcarrier frequency of the transmitter may cause undesired whistling sounds on the REVOX G 36.
Monitoring of stereo recording Checklngthe VU-meters will not alone suffice to produce a correct stereo recordtng. In addition, care has to be takento preserve a sense of stereophonrc space. This is best done by monitorlng the recording by stereo earphonesor bya stereo loudspeaker system. While llstentng to a source positioned right in the center, e.g. a soloist or a commentator, turn knobs 20 and 22 in such manner that the center impression is present but wlthout overloadlng one of the channels.
Use as a Stereo Recorder @' @', "O |n*:rrlk( .'*ngi;-T'-" g::i"*:;;;' lnlii'.nais j'ffii q-:i11'-? wrLLt slusE& Stereo play-back with separate stereo amplifier Set swltch 17 to Tape 1 + II. The amplifier is connected by means of a suitable audio cable to the sockets 43 and 44. If the channels dre inverted, reverse the plugs. Volume and tone are controlled at the amplifler. rWe recommend the stereo amplifier REVOX 40 as a separate amplifier.
Stereo play-back with the internal amplifier and one additional monaural amplifier ( e,g. radio ) external input of the amplifier ( Phono ) is connected wlth socket 45, and selector switch 17 is set to the position Tape II. The volume of the lefthand channel is adjusted at the external amplifier, the volume of the righthand channel at the REVOX G 36. If the channels are reversed, the external amplifier should be connected to socket 46, and the selection switch should be brought to Tape I position.
8.Special Features: Re-Recording, Multiplay and Echo Effects The REVOX G pos s ible 36 is equipped with two independent sets of record and playback channels. A number of ,,Tricks" are therefore . Transferring from one to the other track From track 1 to track 2: Disc 19 in posltion I-iI and red button 14 depressed, Recordlevel control by means of knob 20. Fromtrack2totrackl: Disc2linpositionll-Iandblackbutton13depressed.Recordlevelcontrolbymeansofknob22.
Duoplay Both channels of the REVOX G 36 maybe used for the recording of two different monaural signals, which should be replayed later simultaneously, with dlal l7 in position Tape i + II. For example, on track I the sound of a TV football. game is recorded, on track 2 your commentary. For language lessons, the correct pronounciatlon of a word may be recorded on track 1, the pupil's work on track 2, etc. Echo-recordi.
9. Use as an Amplifier The REVOX G 36 may also be used as an ampllfier independent from recording or playing a tape. Buttons 1l and 12 should be in mid-position, selector switch 17 set to Input I or II. Selection of the appropriate input ls accomplished the usual way, using switch 19 or 21. Controls 20, 22, and 18 may be used for volume adjustment. ",'i.,"",;,.,, I s-ä, I ffi,s.
1O. Maintenance A periodic cleaning of the head surfaces and aII other parts touching the tape is necessary in order to maintaln the quality and trouble-free operatlon of the recorder. Special care should be given to the tape guide pin onthe right hand side, as To assure proper functioning of the end-of-tape-switch, keep dirt deposits. it contains the photoelectric sensing the small light-port in the right-hard guide pin free el.ement.
11. Technical Specifications Tape speed: 3 3/4 and 7 I/2 ips 6/12 pole Hysteresis Synchronous cdpstan motor, direct drive ( motor may be switched off if the recorder isusedasanamplifier) Crosstalk: mono 60 Inputsperchannel: 1. Microphone 3mV,Ri= 0.5 max, flutter: _- J O. I % aI 7 )./2 ips (peakreadingweighted) ..- t 0.15% at 33/4 \ps deviation: Max. spool size: Frequency response: uqualization: USA distortlon: Harmonic ( overall / 60cps : ) Signal to noise ratio unweighted: - 2.
Block Diagram Mic. Recording Amplifier Vorioble Goln Äux . Tuner Diode F o"o'o! lYz {ECC 81 Preomplifrer ECC 83,/ECC BI off for monophonic recording on Ch I1 for monophorc pioybock from Ch.II Output I+Il Ereose / Bios Oscillotor FCC A2 *o.,o\ Aux ooae )- . Mic. "off" for monophonic recording on Ch I '172 x Microphone ln position 18.009.
