Film-Tech The information contained in this Adobe Acrobat pdf file is provided at your own risk and good judgment. These manuals are designed to facilitate the exchange of information related to cinema projection and film handling, with no warranties nor obligations from the authors, for qualified field service engineers. If you are not a qualified technician, please make no adjustments to anything you may read about in these Adobe manual downloads. www.film-tech.
BOLEX S-Z?LSOUNDPROJECTOR16mm Instructions for use www.cineinfo.co.uk www.cinephoto.co.
I I I I I I I I I I I, l, I I r l. I t, I I t, INSTRUCTIONS I'OR PROJECTOR PAII,I,ARD.BOIEX USE S-22A ] N D E X D^ ^^^ .ff 2 GETTING TI{E MOST OUT OF YOLN. BOI,NX S-22I 4 SETTING IJT TIM PROJECTOR IO IOADING TiiE PROJECTOR L3 O?ER.ATINGTIIE PROJECTOR - Projection - Reverse motion - Unloading L5 MINOR REPAIRS OF PROJECTOR 16 PROJECTIONOI' OPTICAI, SOUN! PRINTS 18 PTJEIIC ADDRESSSYSTE]VI - Jse oi microphone - Us*.
I I I I I I I I HOWTO GET TIfi MOSTOUT O} YOUR BOIXX S-22L - Arransement of Projector and Screen The distance from the screen depends on the size of the screen and on the focal length of the lens used. The diagram opposite shows the size of the picture produced on the screen when lenses of focal length using projection 35, 50 and 70 mm at various projection dlstances. 5 6 lldtb For example scy.
Fl >t c\t Sc: A r-rlp.ottot'ta t i no P r n L n u !-l i cou n *u ir vnf n r viewins qnnd n u vnu vn d i t i n n q : r o a.nsle is -^o ,u^ 20" Tlra " - min'im,rm with-Ln +l^^ if : marT screen beaded screen. cnoonNSflg diStanCe be- row of spectators tween the first and the screen may be esbimated by mrltinlrrins the width of the screen L 2 .
SETTING UP TIS PROJECTOR - Open the case fulfy hinges. - Rai-se the upper reel -'Push - and lifb the cover off its arm. down the handle. unlocked Make sure that the knob at the end of the take-up spindle is fully pushed in. Then fit the empty reel on the take-up spindJ e until it is behind the bafl spring. Pu1l the knob toward.
- Connection 'rio the Electric The voltage rrA ra r?tr Power Supnlv supplied to the projector -.art^ If the nominal musL be voftaee of the focai main supply is either lower or higher than these values (between 90 and, 295 taking into consideration the overvofts, voftage and rmdervollage of the grid), iL is necessary to use the Paillard-Bofex transformer T ff ( or another auxir j-ary transformer ua vr{urv4rsrru yuwvr f durlrt3, L.y. I L , <) A) {w I \/ n l vA.l .
,;?Si:rlt - Con:feqtine up the Projec l. ,i:t::r:1. , . the nain switch Make sure that STOP. is set to 2, Turn the knob of the rheostat (which regulates the amount of current fed to the lamp) as far as it will go in the shown bv the arrow. direction A. Main Voltage between llO Withdrar,.l the power cord conn-cb lhe the lid:nd ly to the power supply. B.
rr:---r:-^- AU rt^r.^-^ VUf tUbULtlX s- -e- l- e- -c- l- , o r Ud*U o- -n- -A* m - . .n lifier Set the selector : - to the rrblue" position if the vol-taqe (main or transfornoer) i-s between 110 -nA - +u ^u 1t) rL^ uttg rrn-l*: rr..^irr "^SitiOn rEu vv if the voftaqe is sub.iect to frequent chanees or if the votlage (main or tran:former) is betsce4 -1?2 sqd 1j5 volts.
t t t 0perat lons Pre-l-oadinE - Turn the roain switch 'IMOT". to I t I I I I I I I Turn the speed selector knob (with order to obtain the desired nrnion*i - Choolr ivhrer u q nood uyvuu yr ,f n ov -Ji !or unrl v. ir r n n an arrow) nn uv rr ir tvh, L t h p stnntrncnnna: qt n r n ivo Jn fvn vr v v ! v u nv r yn q v v u " ' ! - jr f - c- n- oj o- dj - X - n3? - Y 2. A . lrho f nroiontnr nrnq v r l ! u v v r 2t:
I I Turn the knob cf the rheostat slowshown by the ly in the direction arrow untlr the pointer of the ammeter rs facrng the red dot (f000 u or 7t. w, accord'ng ro the type r : : - e y e l l o w o n e w h e na of lamp ff5 V lanp Js reing used instead of t h e c o m m c - l r yu s e d 1 1 0 V l a m p . I l t It lf nrcq n i f L A r ' ; o .Ot e a v .
F h Ih I I I F I I I II I F I It : I ],OADING THE PROJECTOR The film threading diagrams on the front of the apparatus show the paths through which the film must be threaded for sound proiectlon wi-th optieal trer:k (diagram roarked OPT) or with magnetic track (diagram marked MAGN). The path picked out in dots on the OPT diagran is used to thread silent fllm. page 11 and 12). (See illustrations, - Place the ful1 reel on the upper spool arm. Do not forget to l-ock it (see page 4).
(cont.) IOADING THE PROJECTOR - Forn the upper loop to coincicle rvith Lhe height of the crrgrovrru curve on the housing of the projector. - Insert the film into the gate betireen the film grides. Form the lo;'.er loop to coincide 'ri I.r hh:.or vo'l curve on Lhe projecLor. housing oi'irTnsert the film on the mlddle sprockeb, :naking certain thaL Leeth engage gfta perIoralLons. Press ththe film. l iln-guid- Close the lens-holder gard to the position the oown against r,iith no reof the claw.
F l t F (cont.) IOADING TiS PROJECTOR hl I'ilm n:th for qorrnd nnJ-in:l track. F l. F I F t n ) tr'i I m nr f h loe m>onal (nl avbr^k track in or qnrrnd recording) tl I I I I TI t Thread the film on the lower sprockeb, wibhout attempting ; {IU l-i tul^+ UI
F F F F F I F I I I F I' lF t r t| I t T OPERATINGTHE PROJECTOR Drni onl-i nr r r v . l v v u r v 4 - Set the main switch f i lm and iq n: 2 q q iv n ov s lvinding - q'..if ^I.. uwruurL - Fr-ino ^n u:r lho f.ho len: Tl tul l^r as to MOT and- check that t h4 r nr r r 5s h onto tho ' v i . hu c v nv r n ui c cr t n an tsko-rrn the qmnnfhlrr ! . y rtraf. n r n vi aJ n r anu l r . s uf u r u ri rn r - l q m Pr ninf.
F F F F F F F I T T n - ln o d i n s when only part To remove the filn it has n-m through thc projector: of - Open the fifn guides of all three sprockets; to do this, press on the knob as indicated on page 10. - Swing the fens-holder the gate, out to - \{ithdraw the filn gently, rsith the lower sprocket. open beginning I t I I I Revindln;t I ,.f t , l - t t t I I i '1 \ Insert the end of the fil,n in the slot in the core of the empty reel.
F F l I II l IF I I I M I N O RR E P A I R S O F P R O J E C T O R TROU-Bln I I l I t t - The rootor w111 not rurt, f L lt ,t ruo l r tnvhun uo -a un un 6v g -c u d nv ag cD u nn+ t f v u is reaching no current l i ml"t 1 I < i ] u . the projector. The The fhe The the house fuses have burnt out. connection cord is faulty. transformer cord ls faulty. transformer fuse has burnt out. sefector plug is r_utscrewed. o:r.
PROJECTION OF OPTICAI SOUND PRINTS - General Th6 :) q-.tl n n nv iJa! ^ 1v 6 7 u v r Orisina-l 'i rewers:l During ]oading. s desi nrints g l 4 l a 9 rrned v U and J v g take to r v nntinql v y f v a al I trrneq nf f6 mm filn with as its surface optical sormd track : annioc . the emulsion faces the screen. b) Contact prints. T ) r t r ir fnr
E F F I F F F F l IF I I ; I t I t t .-',lt,.-,;i,,*..:-r'o;.,,;tlt *;*;**4i-li;;..r,;;jt - Projection For o'ptical sound reproducbLon. proieclion the - Sel lhe fidelily preceding page), cor-tro-L knob according - Set s r r i t n h, the light c^r - selecter up. +h- 5':F ' 'r +Lrllc ^ij..-r nuJuJU ^neraijng:..1 uy- .^,-d Jw4lu frnt :r., " p. T. F\ f l . t"o " O ..,.
PIJBIIC _ADDRESSSYSTEM E F t o u s e live It is sometimes effectlve hpck.oround when the sound track nqrr-i - - qnoonh uyv v rrr i+hile nnl rr a film is shovrn, to ad.d. a musical to dub in both music and speech nr fi1m. a silent when showing n{- M r r r iv ^ r r . n vh Pn r rn v e Tt , ID cs o v r Insert the microPhone jack in the microphone input @ on the rear of l - h o n r n i o n t o r . T h i s i s a h i g h i m P e d a n r : e input.
F F F F F liro I I ; Recore-Plt\/o. nn Trno R , ! o v un va_ n u .g ]l a r The cord of the instrument used must r,rith a jack similar to be fitted on the loudspeaker that fitted connection cord. fnsert the jack in the phono lnput fi at the rear of the projector. This ls a high impedance plug, suitable for any pick-up having a minimum impedence of 40 k ohms. Ad'rrsl.ment rf Scutld Level- Turn the PICK-U? volume control knob in a clockr.rise direction rmtll the sound is foud enough.
MAGNETICSOUNDPROJECTION F F F F F ; I I F F ; - General sound track can be ad.ded to al-l 16 nn filns that whether they are single or double perforated. A nagnetic regardfess have already been developed, A filn with an optical sound track can also be provided with a nagnetic sound track in order to pernit use of either track. Thus, for example, a single fi1n c a n b e u s e d with sor.md tracks in two languages. Magneti-c sound tracks \ f , .
F h I h MAGNETIC SOI]NDRf,CORDING A'h^r tvh' r ev nrr'eetor - .R o n n r d n t l ino r Mrrr inrl to aecordins :r'a,nscribed from a record-player ronil,nr-ro:s MA T:N ZI lp'i--rr. - Set the first j61 Lv-r n r n iveJnUi v- L !f f' rr < r m .]o J! drive film -inaa fr:rne of qnp-r.'-^ 4pv. n p n uo uq n c *r w h I l F I F F I l)- nrge and cneed t].
Recnre in-' e (lnmmentqnrr Snnkon - Set the first ( o r o f t h e p a r t t o w h i c h s o r r r r di s t o b e a d d e d ) i n frame of the fih front of the projection aperture. Do this by rrrnning the projector in forvrarJ or reverse moti-on ulrrtil the frame appears in the aperture, or slmpfy move the iiln manually by turning the knob on the film drive mechanism. - S e t t h e f r a m e c o u n t e r t o O O O 0b y t u r n i n g Lbs mifl-ed knob.
- Set the main switch to MOT, or 0< (rn-p on) :-r you want to wateh the film whi_fe recordir Operating the switch from ST0P to MOTor vice-versa makes t h e s e l e c t o r s w i t c h r e t u r n to MAGN ( fnis safety device prevents any unintentionaf automaticatly erasing of the nagnetic track. - - Check the frame to IvIAGN(l and If necessarYt control. cor-mterl as soon as it -+^r+ an^-1-ih^ D}Jc4arrrS reads 0000, set the selector switch auickly back ih$^ii^+^1.' rl]4suad uY I J .
- Sound Mi-xing For mixlng music and narration, perform the following - Set the first ( or of the part frame of the fih front of the projection apertr-rre. operations : to which sound is to be added) in - Set the frame counter to OOO0. - R.n iho nrni-ctor b a c k r n r a r d su n t i l - Plug the record-player the cor.rnter reads 99g0 (or less). (or tape recorder) into the phone input f. - Plug the microphone into the microphone input @ a n d t u r n t h e M I C R Oc o n t r o l t o 1 0 .
FOR Tm ACCESSORY (errai I qh'l \av arlavfs o n v lnI SUpERrUpOSrTrON0F sOuND u \/ Code: SOSIIR rr osnql *oE- D * With the help of this accessory, it is possi-ble to superirnpose addiLional speech, sound eilects or musie on a sound recording already made, elther over a microphone or by connecting a turntable or a tape recorder to the projector.
F t MINOR REPAIRS OF TIS SOUND SYSTEM h F F F F h PARTS OF SYSTEM AFFECTED Af1 - , (| e x c i t e r l a m p w i l l ragnr up/. All (exciter No sound at all, 0n*i I -^nrOdUCtiOn channels in Rvni order). t or qmn rI a e y nhotnel ^^ r r u L ^I 1r r" ^u^ S geu f i on*ri plW -a* Magnetic hwrur rr n *r r u n v u. . i u I D oo o sE \ ^- -^ I/4€3s Faulty 8T,90 = 6AQ6tube. zn\ ]-prong n nol I ( ooo Jvv zn\ _/w / . ."oo \ }/u6u (a) or shielded plug (c) ' -i ^L r r ft .u.
MINOR REPAIRS OF TIIE SOUNDSYSTEM PARTS OF SYSTEM AT'FECTED NATURE OF BAEAKDOWN PROBAB],ECAUSES f FiIm I and magnetic ' . * - - - -n n qnrrnd ) vn ft v a^ r^l- Wow. t n nl +uLr r^ Y - ^D s . l C28) t -h aosv e rb e eonf ronrndrrnti IVT:mcfi touches arrlr>nlr - sor-rnd nonrndrrni n o o r ll ,v y c. ,nvl Li nl au rql u i nn ^ -r rr u ^ -r ^l lhu S i - q optical the ^ -a E- e ^ p sound head ol v wron / ^5 ^e^u \ ronl : ced gi.1i film.
MAINTENANCE - lubricatlon The lrrhricafinr" svstem of the ^y r* nu -J iv ov a l ne vnr non'r'ipps no sncci:1 AIl the operator ofl-or alror\/ need do i-s lnsert, I O hnrrnc nf n n o r q*l -_ * i_n, r1 , oil q r4 rf ynr f n l i cd uu nrn i ecf nr ) rri lh tho a (using the oil-er few drops of fine e S-22I :tLgnf,iqn. i . the holes marked in red.
T I F F F F I F F E Condenser and Reflector To reach the condenser fenses, open the panel under the shutter conbrol knob as welf as the Projection larop door and remove the Projection lamp. (See following page). :nd Snrn^kolc !o- I efs \ dAt n! .r yr o umur l o iL nJ - L v r t g rnrnekpl,s- lhe /Fii;^^ 6Uruur u4J uaurs varlation f-i lm doq l a n n c - i * a , l .qwu-a ugu vn !- , 1 . \. {- Lt l . - roijcr,r -- r4JvnwL r or Whi 1 o From 'nakino coni,rcb r.
F Il I I I 0ptical - Cut off R e r n o v et h e c o v e r . T Clean the sould head with a soft bmsh. The upper slot can be reached more easily if the control is turned so as to lower the optical unit. For cleaning use a soft cfoth or special lens cleaning paper. F F T I li li li the power supply. - Remove the fidelity (s1it controt) knob (r.inscrew the screw, then press on the end of the spring at side; at the same ti-me pull the knob towards you).
- Replac i-ns thr A m P li f i e r F u s e - Press on the bayonet type cover and turn it a quarter turn to release 1t fror. the socket. - Rencve the bfown fuse and insert of the spare fuses supplied- with projector. one the ,1 .t:i - .ino Ranl / . - . r \o,i,i l1 - n - ennfrol P:nol l rmn - r \ u.)Ar. - Dis:cnnect ihe projector. - To :each this lamp, unscrew the 5 s c 1 ' ? - . . ,ast t h e e d g e o f t h e c o n t r o l panel and remove the cover.
- Repfa"cing the Amplifier: - First turn off the projector. Tubes the power supply to The amplifi^r tubes can be reachei by unscrerting the J screws that fasten Lhe brck panel of bhe case. The tube t1,'pes are shorrrn opposite ancl on the diagram, page {0. I€4 ? h e t u b e E I v lE 4 ( m a g i c b a n d ) c a n be approached in the same way as the control panel lamp (see preceding page ) Replacinq the Arnplifier Sr:ould the i:.rplifier fr.il aird rer.ircing ihe i:.nps be .
BF-14 (15 WATTS) +ITTILIARYLOUDSpEAIGR (Available as accessorv) Code : S0C0F This 12" loudspeaker takes the entire power ouLput .upplied by the amplifier ( s e e p a g e r- /- /\ . It is housecl in a case, two sides of which can be folded doro'n, forrning a stand. One of the sides is fitted with a reel drrm r',ith permanent contacts, containing 50 ft of connection cord. There -Ls space lor various accessories such as: Codes I accessory for of sound earphones .lvoltneter.
crrnnl u 4 y ! + 4 v e nhia i od wi J:h '^naqqnrrr -l 2lr io BOX speaker) USed f Ov rf Code ; SOPUI C e v tO u l fg ru n e C ut i n e _ the two speakers when the projector is instalbooth, allowlng the fed in a projection speaker to serve for monltorins buift-in ourposes. Connect ing the Box - Connect the distributor box to the projector (speaker output on the con{ trol panel). - Connect the jack from the auxiliary (f2") speaker to the socket under the siCn F and .
so}p I. HINTS FROM A SOU-NpENGINEER PROJECTION SOUIVD Acoustics oI the Proiection Room Besides the suitability for motion picture screenj-ngs and the comfort i-t offers to the audience, the projecti-on room must afso have good acoustics. The best results will be obtained in a room in which reverberation has been sui-tably reduced. A certain degree of reverberation is nevertheless useful, since j-t tends to rrliven uptr the reproductlon of the sould, especially of music.
- Appropriate Souad level For comfortable listening, the level of sound froro the speaker must be considerably louder than any other noises whieh may be heard at any point of the room (sor.rnd frorn the projector, people walki-ng in pr""ngeway, *i"ijl--rr." amount of power that must be fed to the speaker to produce an adequate sor:ad output depends on the size- of_the projection room and also on its reverberation characteristlcs.
F t HOWTO AID MAGNETICSOUNDTO A FIIM II. T vdue n e n d s l ' fV u uI rrr r n h I tho o' futJr ny va n r va r;1m to which is sD vowur un d to bu se fi1m, ne\^rsreel and so on. Dependj-ng on eircumstances, or he may' on the contrary, "lattitude have to closely three elements from which any sound track is compi]ed - wifl sormd effects have to be lntroduced celfaneous t re ir vnr rr uc onnnrrl ino 1-n tl.ro nf f LLm d o e u m e n t uc3rr r. yr . fj es aa uJu:Jr' cr - ^ i inVO]Ved.
F I RECORDINGSOUND - It and Records If the record-player unit has a. tone control, set it to the position giving maximun The turntable treble. speed must not be allowed to vary, and the records r1ust be flat and not warped in any way. long playing recordingi r"e partj-cularly recommended on account of their low backgror-rnd noise. tI It- Pick-up fhere is available a wide variety of recordings of background mood music for all o c c a s i o n s , a n d s o r - i n de f f e c t s o f a l l t y p e s .
F I. li fa l; ia L l - T T I I t I I I t I t - Narrator and Operator The narrator should avoid speaking m a r r h a c a i r r n a f a { w h e n -h i s v o i c e i s **J too close to the microphone, or the sound track raised., At a normal vocal lever, the best distance is about 8". To prevent the consonants like'rstrfrom reachi-ng too higtr-a-i;;"i;";h"" miarnnhnra 6].^111dbe held level with the chin, so that the bieath does not strike rliron*Jrr rorincf the sensitive membrane.
Il ir la l - t t I t l_ l I The quality of a magnetic sound recording depends on various advice, are quoted be1o.w: together with pertinent t I t t I t I I [ , factors, some of which, of Masnetic Track Oualitv magnetlc c o a t l n g ) , The material used for the sound track (a first-class consbant widbh and thickness consisbency, a smooth surface, a perfectly lur fq n4l er a aDrTLF j6nar{-nr* lJyvf u4IU \ vr o uT ! J\ r fi nI I n}r*nj-.
If , I l SCISMA EI,ECTRIQUE DE WIRING Ies valeurs indiqu5es entre palenthbseg pour fonctiomenent sE posltlon MACN 4 Tensl-ons continues de I'arrilr€ ru CoEuiaters seen froE bebind Sriiches von hinteo Scblter &sehen nesw6eg avec u DIAGRAM OF srentendent . instment A]\{PIIFTE! de 2OOOO.C)/V. DC voltages mc6 neasued with tF66 " ,AO[( ^ -\tr- l I cq^"tot.", @A I *l - ; I t il !G l I T I ! I te, t i I :'' - AS5 The values in parentheses position Ulctt ( . |' I TI# : .
FLIFICATEIIR TYPE AS5 SCHA],TBII,D DES AS5 io operation of ltroent VERSTAEIilIII on tra d.r 20000 SZ/V. rlrb C ::alcq- rr-.rbl- 3-a.-:::--9= rel--e s:eiiurg urc! d . -3 It Instrurent e::a ?ets:?-1::- rs:- 2i,],il i-,'? geuesser .iO * +.,', 1-r.-'-.i a ,l - +- I I .- d :6o : o 6 tt !* E e '5is-; $ ) rI - ; j : t '-;''r.'. - + t .
Two 16 mm sound projectorsfor the industr advancedamateursand professionals Optimum results - Utmost reliability Ease of operation T h e q u a l i t ya n d p e r f o r m a n coef t h e B o l e xs - 2 11 a n d S - 2 2 1 s o u n d p r o j e c t o r assureyou of a completelyfaithful reproductionof both sound and pi"ture. They are widely appreciatedby professionarmovie-makers,knowredgeabr amateursand all usersof audio-visualtechniques,especiallyin the fields of industry,educationand scientificresearch.
The Bolex Proiectors S-211and S-221 offer you the five most importantfeatures: 1. Hi-Fidelitysound 2. Superb image quality 3. Utmost reliability 4. Greatest film ,protection 5.
1. Hi-Fidelity soundbecause... Sound heads, amplifier, loudspeaker and mechanical components were designed for each other as a unit, according to the most exacting specifications. Exceltent sound quality is due to absolirtely coRstant film movement assured by two massive, perfectly balanced flywheels. a) Optical sound head. lts carefuldesignyields a faithfulreproductionof music,voiceand sound effects. - Frequencyrange: 50 to 7,000 c/s r 3 db. - H i g h p r e c i s i o ns c a n n e r . - Standard4 V 0.
2. Superbimagequalitybecause... Paillard engineers have found ingenious solutions to the four crucial problems that face every designer of proiectors ; picture brightness, definition, steadiness of image and freedom from fticker. a ) The high picture brightness, togetherwith an even distributionof the light on the screen, was achievedby creatingoneof thefinestopticalmechanicalsystemsto be found in projectors. Its componentsare : Sphericalreflector. Condensersystem consisting of three coated lenses.
3. Utmostreliability because... The sound proiectors 5-211 and 5-221 show infinite care in every component, the observance of microscopic tolerances and a carefully planned design down to the minutest detail. Materials of chosen quality guarantee heavy duty performance. The main components are permanently adjusted. All projectors have to pass exhaustive tests during and after assembly.
-Jr Greatestfilm protection because... Films, especially originals, are valuable and often irreplaceable documents. With this in mind. Eolcr enginaers have developed numerous foltures designed to greatly lengthen the life of your film. Here are some of thes€ featu?es : Tension on film remains constant throughout projection - in lorward, reverse and rewind regardlessof load on lake-uo reel. Sprocketsand guide rollerstouch neitherframe nor sound track.
F C" Easeof operationbecause... b) Film threading becomes a matter of seconds - Lens holderswings out completely;leavingfilm gate clear. - Film is positionedautomaticallyon claw when lens holderswings back to pro.iectionposition. - ThreadingIilm into sound head is equallyeasy. Tensionon film is adjustedautomatically. The S-211 and S-221 are "compact" proiection machlnes in a single "suit case". Although both projectors offer the latest in technical refinement their operation is easy and quiet.
General Dim.n.ion3 Specification of models 5-211and S-221 Woaght Finlsh Caso Powcr Supply Motot With cover closed : 20%"x11"x16/.". With cover removed and reel arm in position (without reels) : 2 0 1 4 " x 9 1 A "x 2 4 y . " . Y{!l' _c9y9r-ryI.noved and 2,000 fr. spoot in posirion: 25"x9k"x301l ". 55 lbs. Two-tone grey enamel finish, metal parts in mat chrome. Covered with washable plastic cloth. 110-135 volts AC, 50-60 c/s (90 to 265 volts wirh transformer). Series-wound high starting torque.
ACC€SSOfieS (avairabre separatery) N o t e : S o m e o f l h e s e a c c e r s o r i e s a r e s u p p l i e d w i t h the projector.See price list. Auditorium Loudrpoelcr 12" diameter, '15 watts, 50 ft. cable on reel with permanent contacts. In handsome lined cassSides fold down to fom base. Storage space for accessoiles. Weight 28% lbs. Code: SOCOF Suporimposition Unit (for projector model 5-221 only) Attenu€tesmagneticsound recordingand superimposesspoken commentary, musicor sound effects.
