I w your purchase of a FISHER in\trument you have completed a chain of events that began n i a n y nionths ago, in our rewnrch Inhoratories. For it is there that thc basic concept of the equipment you have just acquired came into being - its appearance. its functions, its quality of performance. its convenience of use. Remember always that we want this equipment to give you the best performance of which it is capable. Should you at any time need our assistance toward that objective, please write me personally. But the end step- your purchase- is merely ;i beginning. A door h a s now opened, for you and your family, on virtually unlimited years of musical enjoyment. Recognizing that one of the keys to pleasurable ownership is reliability, we have designed this instrument to give long and trouble-free service. I n fact, instruments we made over twenty-three years ago are still in use today. Many hours have been spent by our engineers *andtechnical writers to create this instruction book for your guidance and enjoyment. If you want the musr out of your FISHER, there is only one way to obtain it. With the e q u i p m e n t before you, please read this booklet carefully. I t will be time well spent! ITH AN IMPORTANT SUGGESTION . Fourider and President 1937 1931 1931 1938 1938 1939 1939 1939 1945 1948 1949 1952 1952 1953 First high-fidelity sound systems featuring a beam-power amplifier, inverse feedback, acoustic speaker compartments (infinite baffle and bass reflex) and magnetic cartridges. First exclusively high fidelity TRF tuner, featuring broad-tuning 20,000 cycle fidelity. First two-unit high fidelity system w i t h separate speaker Prtclosure. First coaxial speaker system. First high fidelity tuner with amplified AVC. First Dynamic Range Expander, First 3-Way Speaker i n a high fidelity system. First Center-of-Channel Tuning indicator. First Preamplifier-Equalizer with selective phonograph equalization. First Dynamic Range Expander w i t h feedback. First FM-AM Tuner with variable AFC. First 50-Watt, all-triode amplifier. First self-powered Master Audio Control. First self-powered, electronic sharp-cut-off f i l t e r system for high fidelity use. Milestones In the History of High Fidelity Reproduction 1953 1953 1954 1954 1955 1955 1955 1956 1956 1956 1956 1956 1956 1957 1957 First Universal Horn-Type Speaker Enclosure for any room location and any speaker. First FM-AM Receiver w i t h a Cascode Front End. First low-cost electronic Mixer-Fader. First moderately-priced, professional FM Tuner w i t h TWO meters. First Peak Power Indicator in high fidelity. First Master Audio Control Chassis w i t h fiveposition mixing facilities. First correctly equalized, direct tape-head master audio controls and self-powered preamplifier. First to use Power Monitor i n a home amplifier. First All-Transistorized Preamplifier-Equalizer. First dual dynamic limiters in an FM tuner for home use. First Performance Monitor in a high quallty amplifier for home use. First FM-AM tuner w i t h TWO meters. First complete graphic response curve indicator for bass and treble. First Golden Cascode FM Tuner, First MicroRay Tuning Indicator. 1958 1959 1959 1959 7 960 1960 1960 1960 1960 1960 1960 1960 First Stereophonic Radio-Phonograph with M a g netic Stereo Cartridge. First high-quality Stereo Remote Control System. First complete Stereophonic FM-AM Receiver (FMAM tuner, audio control, 40-watt amplifier). First high-compliance plus high-efficiency freepiston speaker system. First to use MicroRay for FM tuning and as a Recording Audio Level Indicator. First complete stereo FM-AM receiver with 60watt power amplifier and new 7591 output tubes. Smithsonian Institution, Washington, D.C.,accepts for i t s collection America’s first commercially manufactured high fidelity radio-phonograph, made by Avery Fisher in 1937. First reverberation device. for use i n high fidelity equipment - The Fisher Dynamic Spacexpander. First stereo tuner with MicroTune. First FM tuner w i t h six IF stages. First FM tuner w i t h five limiters. First front panel antenna selector switch, 72-300 ohm, Local-Distant positions. I I I L THE FISHER 800-6 ST E REOPHONI C FAA-AM and Multiplex Receiver T I ~ Ev i x y L A TE S T T E C H N I Q [ ~ E S in audio eiigiricering design have ticen incorporated in the FISHER 800-23, resu!llng in a stereophonic rc-c.c.iver of t r u l y outstanding quality which i, \ irtually obsolescence-proof. With the addition of a pair o f Ypeakers and a record player, the 800-B. with 65-watts of hlusic. Power, becomes I paised in scope the nucleus of a complete high-fidelity s p t e n i u ~ i w of feature. and q u a l i t y of performance. T h e 1300.13 is capable of reproducing both FhI-.4hl stereo broadcasts and tht. n e w FM multiples Ltcreo-icithout the need for adding exlerritrl cidaptors of any kind. I’hc F\I tuning indicator r a n also be used as a Stereo Beam indicator. signalling instantly when the station tuned to broadcasts n m u l t i p l e s ztertto program. A special noise filter i h included, which has n o vffect on the freqnenc.y rangc of the riiiiltii~les program. l’h e t i i g h 1: ;en si t 1ve I:i\I t 11n e r u t il i zcs w i de-t )a 11r i d t’ 1 g n t h rougho u t t n c i ~ - i l l ~ uriparallelr~ti ~ t irredniii from distortion nnci superb perfo: m a n w o n FJi multiplex programs. ‘rhv :\ 11 t i i i 1 t ’ i includes a tuneci RF mi)lifier f o r estra sensitivity and eithc.1 broad or sharp C. handwidth for maximum fidrlity on local stations without sacrificing selectivity and sensititsity when receiving conditions are more difficdt. T h e blaster ,4udio Control of the 800-8 includes the: full range of functions found o n elaborate professional installations, including such features as s h a r p cut-off Low and High filters, Tape! hlonitor facilities. nnd a Phase Reverse switch. The final link in this chain of superbly engineered, integrated audio components is the dual-channel 65-watt power amplifier, capable of driving the most inefficient loudspeakers to full room volume with ease. The remarkable performance of the 800-B is assured for many years to come l y the craftsmanship arid careful attention to every detail of manufacture which have made FISHER quality famous. We tire qure that y o u r appreciation of the 800-R will grow with time, as i t handles P1er-y miisicnl assigriment with that degree of perfection that only n top-quality electronic instrument con provide. A NOTE ON STEREOPHONIC SOUND S a ginnt step forwutd in the history of high fidelity music reproduction. This unique dual-channel system offers a distinct ad\ antage over monophonic (single-channel) systems becaiise of two iniportant audio characteristics: the dimensions of direction and c l v p ~ h .These live sound qualities are for the most part missing i n nionophonic systems because recoidings are made and reproduced over a single channel. This is somewhat analogous to listening to niusic with one ear. Stereophonic recording techniques, however. utilize two separate banks of microphones, positioned in the left and right sections of the orchestra. In this arrangement, the microphones detect the musical sounds in much the same manner as the two ears of a listener. The sound picked up by each bank of microphones is then ied to independent channels and recorded on disksor tape, o r transmitted ovCr scporote channels of a stereophonic broadcast. IEH~.:OI~~IC S o~ t~i R~ DI Cis : TABLE OF CONTENTS PAGE INSTALLING THE 800-6 FOR THE ‘MAN IN A HURRY’ OPERATING THE 800-B 3 7 8 CUSTOM MOUNTING INSTRUCTIONS 13 TECHNICAL SPECIFICATIONS 15 To reproduce stereophonic realism in the home, two separate sound channel.; lire required to achieve the stereophonic effect. The stereo sound output o f n rer*ord player, tape recorder or tuner is fed to two sepnrate anniiliher c.hannel\. which in turn drive two separate speaker q-stems-. ‘I‘Iiu+. instruments lorated on the left side of the orchestra are h c a r t i [It cdominaritly i n the speaker to your left: instruments on the right side of the orchestra are heard predominantly in the speaker to pour right: Jvhile instruments located in the center appear to be heard midway between the two speaker systems. T h e result is a startling sense of presence such as is normally experienced only a t a live orchestral performance. FM MULTlPLEX STEREO F M BROADCASTING has a frequency range henring range. For esampIe, Fisher frequency range which extends to 75 kc, range does not exceed 17 kc. This extra far in excess of the normal wide-band tuners have B while the normal hearing “space” in the frequency 0 m u 0 0 f Y c Iy UJ LL 2 3 m 3 -5 c 8 ares. It has txrn found t h a t the aural CfTt‘vt of stereophonic sound i - enhanced I+ 1 1 ~ 1 1 two itlrntic~slspeakcr ti’nis are used. Although 111e5e p i incipivs c a n w r w as a geiirral s t i l l t ing point in placing y o u 1 loridyeakei,i. w f i +trongIy re(mniiiiei1d that yoit experiment with set era1 cliffercnt arriinpt~nrentstwfore d c c i d i t ~ gon n final placement. l’lic iiripredirtable effects rcsuiting from 1 \ 1 1 niture arrangement and irregularities i n room dimensions may In:iLrs ii~iorthodoxplacement of t 11c 1o u d s pea k e I‘S 11e c c ssa ry . After the i n i t i n l loc.atiuii of the loud*pr~,ihers has been decided upon, make the followiiig connections: 4 t ONE SPEAKER: If you are rising o n l y oiic speaker teniporarily, connwt it to the LEFT SPKR terminal l t r p (one on each speaker terminal strip with ordinary power cold or heavy-duty TV antenna twinlead. Surh cables may be up to 50 feet in length. Then connect an 8- to 10-ohm resistor rated at a iiiiiiimum of 10 watts to the C K D a n d “3” lugs on the Right SptAaker terminal lug. The short wire proti iicling from the chassis 4iuuld lie connected to the “4”, “8”, o r ”16” lug on the Left Speaker Impedance Selector terminal strip. depending on the impcrlntice of your loudspeaker, TWO SPEAKERS: Connec,t the speaker 0 1 1 your left ( a s viewed from the listening a r e a ) to the terrniiial lug+ iu‘irkcd LEFT S P K R ( o n e on each speaker terminal s t r i p ) , Detertiiiiie the impedance of your speaker and ronnert the short wire pt‘otr uding from the chassis to tlie corresponding terminal lug oti thc h i t Speaker Impedance Selector terminal strip. The speaker on your right should be connected to the Right Speaker terminal strip, t~ctween the GND lug and the “S”, “8”, or “16” lug, depending on the impedance of the speaker. Ordinary power cord or heavy-duty TV antenna twinlead up to 50 feet in length may be used for these connections. Antennas ‘The 800-8 is supplied with a h i l t - i n ferrite loop antenna for AM reception. ‘This antcnno provides supcrior rcjcction of noise and static and should prove morc than adeqiiate for all but extreme longdistaiicv applications. Thc3 antenna shoi1ld be moved to the rear a n d downward for best reception. Tlie foi ward position is used for sliip1)in~only. Sincc this type of antenna is somewhat directional, the 800-B chassis should be rotated to deterrninr the orientation wiiirh proVide+ the [Jest reception. For long-distance reception, a long wirt. antenna (‘an be added to the 800-B by removing the strap a c r o s t h e A h I :Intenria terminals on the rent panel and connecting the long wire to the left terminal. A folded dipole FM antenna is included with the 800-B.The two arms of this antenna should be horizontal and away from all large metal objects and electrical wiring for best results. If the 800-B is used in close prosimity to one or more powerful Fhl stations, the two wires from this antenna should be connected to the LOC terminals on the FM AntenIw terminal strip on the rear panel. This will prevent such stations from overloading the sensitive input stages of the 800-B FM tuner. If an Fhl station is not located nearby, the DIST terminals should be used. After the antenna has been connected and the 800-€3 put in operation, the antenna should be rotated horizontally, to determine the orientation for best reception. In apartment Iiuildings and other Luildings using steel structural supports. reception can be improved by placing the antenna close to n window. If tacks or staples are used to fasten the antenna i n p1ac.e. be sure that they do not contact the two conductors running along each edge of the antenna wire and avoid fastening the antenna directly to a wall. If necessary. the antenna may he placed under a carpet, but as a general rule, reception improves as tlie height of the antenna is increased. T h e antenna should never be folded or coiled, FM multiples requires stronger signals for low noise levels than ordinary monophonic programs. You may find, therefore, that place*merit of the antenna may have to be improved for good multiplex reception. I n some cases, especially in fringe areas, a n outdoor rooftop antenna or even a highly directional yngi type may be ileeded for multiples rereption, even though the. iiidoor antenna suffices for movoptioiiic transmisions. Outdoor antcnnas should he connertrd to the DIST tcrniinals. Record Players and Changers hlngiietic or ceramic phonograph cartridges call IJCplayed through the 800-R. The PHONO i n p u t jack5 are. us;rd for a magnetic cartriclce a n r l the PILX i n p u t s ore used for ;i cc~rninic rcirtridge. If you ciiiitiot ascertaiii whi,*li of the two leads from the' record player is the (,hanncl A o u t p u t and which is ~ l i cChaiinr*l I? output, connect tliern L O the 1300-8 nnd li?tprl for normal plncvtnc‘lit of the instruments 011 a symphonic stereo record. If the v i o l i i i .set-tion appears to be lorated o n the right, reverse the leads from t h c b phonograph. The (:Iiaiiiiel Reverse %witc*hniny bc used to c*hcc*k this listening test. ’ I ‘ h c ~ instruments G I i n u l t l l)e properly plarcd \r 1 t h the Channel Revers. switch i n the OFF position. (Spwial te.1 r w n r d s may also be o1,tainerl from yoilr rword dealer.) tapes while the); are being recorded, and to have the full use of all the audio control facilities of the 800-B during ordinary playback of previously recorded tapes. Connections ore as follows: STEREOPHONIC TAPE RECORDER: 1-Connect the Channel A output of the tape recorder to the A TAPE hION jack on the rear panel. 2-Connect the Channel B output of the tape recorder to the R TAPE MON jack on the rear panel. 3- Connect the Cliuririel A input of the tape recorder to the A RCRDR OUT jack. 4-Connect the Channel B input of the tape recorder to the H KCRDR OUT jack. MONOPHONIC TAPE RECORDER: 1-Connecl tlw o u t p u t of the tape recorder to the Channel A TAI’E hION jack on the rear panel of the 800-B. 2-(:onnec*t the i r i p u t of the tape recorder to the A RCRDR OUT on the rear panel. jii(*k NOTE: During i i l i i ) 1)ac.k of your tapes, place the Mono-Stereo $witch i n the R I O N O position for sound from hoth speaker systems. T o monitor tapes through both speakers as the tapes are being I-ccordcd (on recorders with separate record and playback heads ( J n l ) ’ ) , the o i i t ~ t i i t of the recorder n i w t lie conncctcd to both T.4PE hlON input jacks. This can easily be done by obtaining a “Y“ connector o r IJY splicing together two shielded cables. Tape Decks A t a p e deck i- t h v 1:ipe transport mechanism without the electronic preamplificrs found i n tape recorders. S u c h t a p det k~ m a y he played through the 800-8 b y connecting the Channel A ( o r Left output 5 nil the tape derk to the jack on the N W R 111i1rkedChannel A TAPE HEAD. ’I’hc Channel H ( o r Kight) O I I I ~ I ~ I from L the tape deck should be cwnriected to the CIianneI 13 ‘l‘;\f’K HEAD jack. A monophonic, tape deck should be connectecl I O [hc Channel A TAPE FI E AD jack. Spacexpander The FISI-IER St-’u(‘‘.t/-’ciri(ler. hIodel K- 10, Y U I I he connected to the 800-B hy u$ing t h e ppecial Spacc~xpcznder jn(7ks on the rear panel. Before in.tiilli;lp the .?’pcicc.z.pnniler. remn\ t. 111(~ L W O jumper wires between the Spnce.ipnnder jacks hut retail1 tile jumpers for possible future uhe. These jiinipcrs must he iiisertcd w h e n the Spncexpurider i s not conriected or t h e 800-B will hr coriiplctclp inoperative. Make the following connections to the ,Space~purtt/er: 6 I l--Chatinel A TO RE\’ERB OUT javk o i i l l i e 800-B to the Channel A 0U’I‘PIJ”T‘ jack on tlw Sptrcesparicier.. 2-Cliannel D ‘1’0 REJ’ERR OU‘I’ jark R OU‘TPU‘I’ jack (311 t h o 800-B to the Channel on tlic Spac~cxpiirrrlcr. 3--C:hanncl A ‘I’O KE\’ERB I N jnt\k on thr M I - B to the Chnnnel A 1N P U l jack on the ,Spnce,xpunder. 4-Channel B TO REVERB I N jark INPUT jack on the Spuceipander. 011 the 800-B to the Channel B Center Channel A center channel speaker nnd sel,uratr power tlmplifier may be added to \ h e sound system of your 8017-H 115’ connecting the additional amplifier to the CENTER CH OU‘I‘I’UT jock on the rear panel. Srich an amplifier should have n i.olume or input level control, b u t tone controls are not necessary sirice these are provided by the 800-B. After an initial adjustment of thc center channel volume on the additional power amplifier, the Volume control on the front panel of the 800-B can be used to v a v the volume level of all three speak?‘ systems simultaneously. If the left and right s p d e r s must he placed far apart in your listening room, resulting in an apparent “hole-in-the-middle” of the stereophonic sound pattern, a renter channel speaker will be found particularly effective in restoring a naturally balanced curtain of sound. System Grounding The screw t~rrmiiial marked GND on the upper (Left Speaker) terminal niiiy he risetl to ground the motor and tone arm of your rerortl player i n order 10 reduce hum. The ciinssis ground of other components ma:< also lie connected to this terminal if desired. Speaker Phasing ‘4ftt.r having read the wction on operation of the 8UU-B, perform the following siic.aker phasing adjustment: 1-Play i\ r n o r ~ o p h o n i crcc ~ orti with prominent bass material. the I’haw Rc\c*rw Switch to ON and then to OFF, and tliv 5oiiiicl of thr l)a+.; ton^+ under each condition. You m a y f i i l t l i t h ( ~ 1 p ~ t t to I tiirn the Bass controls clockwise and the 1 retjic cotitrot+ ( criiriIrrc,loc.krvise during t h k test. 2-Slitlr ronil)arc. r . %-If thr IMC.; w i i i ~ i fl r~~ l l r rarid richer with the Phase Reverse switch ofi t h r s power L O the 800-B and reverse the leads to the left speaker. ’l’hen place the Phase Reverse switch in the OFF posit io 11. ON, tirrri &If the has.; sor~nd is fuller w i t h the Phase Reverse switch OFF, your speakers are ulrwrly in phase and no further adjustments are n e w s i r g . Ketiirn the Phase Reverse switch to the OFF position. 5-If yoti are using a Center Channel speaker, perform the same listening test while rcver4ng the center speaker leads. The Phase Reverse switch has no effect on the center speaker. A SHORT OPERATING GUIDE FOR THE'MAN IN A HURRY' 1 I 7 I I r P I STEP 2 STEP 3 STEP 1 Set SELECTOR switch to the program source you wish to hear. PHONO to listen to a record. I Set MONO-STEREO switch to r I . MVNU tor monopnonic pro- Turn on power by turn- I nrmmc y'UII1.l. I ~ MPX STEREO to listen to a multiplex FM program. FM for monophonic FM programs. F M - A M STEREO for FM-AM stereo I I I ~ A L ~ A STEREO for stereo programs. I I I I I I I :.-- \ f f i I f r A A C l,,A,,, 1119 ~ W L U I I I C LUllllUl -l:-L+i.* -I--L..,:ee ..-+:I 3 l l u l l l l ~L l U L K W I > G U l l l l l U I :II + clicks. Adjust later for desired volume. p r o s rams. A M for monophonic AM, TAPE to listen to a tape recorder, NOTE: Set all other switches a n d controls in the position shown. I I I 'I'his adju.;trnent will assure that thr qlt5;ikers in your system "push" and ''pull" i n unison, instead of in upposition--an important consideration in achieving the maximtiin stcreo eflrct and good low frequency sound. OPERATING Y OI'R80O-B is now ready for opcration, h u t like any other fine piere of electronic equipment. i t niust IN: operated correctly in order to deliLer its f u l l capabilities. Q'e iirge you to read these instructions carefully in order to uchiet-ci optitiium results. Volume Conirol 0 The: j'olume control regulates the total volume of sound from the speakers. The AC Power switch is combined with this control, and the power is turned off a t the estic~me left position. This switch also controls the two power outlets on the rear panel. The l'olurne control ctianges the sound I ~ v e lf r o m both channels simultaneously. t h u s making it unnecessary to tinlance the channels each time you change the volume. Loudness Contour Switch The Loudness Contour switch is ~ist*(I10 add compensation for the natural deficiency of the humaii eat i n the extreme bass and trehle ranges a t low volumcs. With t h i q c w i t c h i n the ON position, an increacing enipha3ir; of low Imss and high trehle tones is added ;is the \'oltinic control is turned couiiturr,luck,vise, resulting in a more natural sound a t low volume levels, Selector Switch ?'he nine positions of the Selector switch perform the following functions : TAPE HEAD: Selects a tape deck connected to the TAPE HEAD jacks and provides rorrect equalization for tapes played at a speed of 33; and 7!5 inches per second. PHONO: Selects a record player connected to the PHONO jacks and provides correct equalization ( R I A A ) for all records made since 1954. MPX FILTER: Used for listening to FhI multiplex programs from weak stations. T h e fiIter will climinate m u t h of the noise without restricting the liequency range of the music signal. The Stereo Beam tuning eye will automatically indicate when a multiplex program is broadcast. MPX STEREO: This position is used for Iistening to multiplex Lroadcasts from stronger stations. The Stereo Beam also operates witb the Selector in this position. FM: This position is used 'for listening to monophonic FM broadcasts and for tuning in an Fhl station. FM-AM STEREO: This is the position for listening to Fh.1-AM stereo programs. T h e FM station will be heard on the left speaker and the Ah1 station will be heard on the right. AM: hlonophonic ,4M programs may be heard by turning the Selector to this position. AUX: This position selects a component connected to the AUX jacks on tht' iear panel. TAPE: Selects a tape recorder for playback of previously recorded tapes. This position is not used while making a recording. Balance Control This control is used to equalize the sound levels from both speaker systems to achieve the optimum stereo effect. If the Channel A and Channel R inputs are exactly balanced, you will hear equaI sound levels from the left and right speakers with the control in the AT-A-GLANCE OPERATING 'GUIDE NORRI,4I, position. If, however. there is an i n i l ~ l n n c e in the program le\ el<. you can re-halarice the wurid lr\ C I S b y t u r n i n g the Balaiice control either clockwise ( t o increaw ttic> sound level on the right arid derrease the sound lebel 011 the left) o r counterclockw1.c.c ( t o i r i ( , w a w the left and decrease t h e r i g h t ) . The Balance coiltrol is not a \olurne control qince the same oser-all volume is 1 I l ~ l ~ ~ l ~ a$ ~ l ~i tJ is ~ Pal d~j u s t ~ d .with the Balance control fully counter, Ioc-Li+i*r. o n l y the left speaker will be h e a r d ; with the control fililv r l o c k ~ I X . o n l y the right speaker will be i n operation. Bass and Treble Controls ..1 tip 13,i- ( ~ ) n t i o l sinrrease o r decrease the aiiiount of Lass tones I i ~ ~ t r1 1d: the sound output. R'itti the Bass controls iri the NORMAL p m i t i o n , t h e t ) A \ s tones will .-outid esartly as thcj \+ere recorded at t h v progruiii w u r t t e . If you wisli to increase the Lass emphasis h r a u s e of a Lass ciehciency i n the record, tape o r radio broadcast you have wlectcd. siniplj turn the Boss controls the de\irt:d amount toward the 1 1 4 X pwition. To decrease the proiniriencr of the bass tones, t t i i r i [hr Ila- controls toward M I N . Nornially, tlic Bass controls for Left ant1 Right Speaker qystenis rotate together, h u t if you wish t o arijiirr the Has\ serlarately for each channel. hold orie of the knobs To Listsn To A: ( * l l i i t r i t l - tunaicl J1 I X : iirid Mono-Stereo Switch To: FM-AM STEREO STEREO MPX STEREO or MPX FILTER STEREO Stereo Progrom FM Monophonic FM MONO AM MONO PHONO STEREO FM-AM Stereo Program FM ~~~ Multiplex ~ Program Ah4 Monophonic Program Stereo Record (AUX for ceramic cartridge) w h i l ~ t i i r n i n p the othcr. -1 lit> 'i'!talJltA I oritrol. adjiist the intensity of tlir. Irchle tone heard i n th,. w i i r i c l oiitput. \ c with the I3ass rsontrols, t l i c NORhIAL posilion \ t i l l r v i i l t I N tht: \iitiic dcgrtle of tr~.l)letoiir as e\i>ts in the prog r a m ~ o i i r w .Tlie relciti\e ilniuunt of trehlc toris ~ ~ 1 1I 1Jincreased, ~ re3ulting I I I a m u r r l ~ t i l l i n i i t aiid rriq) \ o u r i d . I,! turriinp the Treble Monophonic Record PHONO (AUX for ceromic cartridge) MONO Stereo Tape Recorder TAPE STEREO TAPE MONO Stereo Tape Deck TAPE HEAD STEREO Monophonic Tope Deck TAPE H E A D MONO i t ( + a n IN> clrc'i~eci~e~l, i . c s C i i l t i r i g in a m o r e tnc~llo~+ ' i i i d intinlute tone. I)? turning the cuiitrril t o w u , i d RIIN. T h e 'f'rvi)lts c~onLtoI+ ruay ai<o I J adjusted ~ indit.iciil~lly f o r each channel Iq liolding one knob while rotating the other. Turn Selector To: Monophonic Tape Recorder ~~~~~ ~ High and Low Filters Thc High Filter is a h a r p cut-off circuit de4piicd to remove anno! iiig record bcratch. hiss and other high frequcricy noise without i. Low Filtcr dul li n fr the t r t h l c portion of the music;il p ~ w g r ~ n The is similarly de.signrcf to remove low f i q i i r n c ' y noise such a s turntable rumble, without weakening bass tulle' in the musical signal. Mono-Stereo Switch The MONO poqition of this switch is usctf to blend together the i n p u t rliunnels a i i t l to send this l ~ l ( ~ d signal ( ~ l to both loud.peakcr I t is tioriiiaIIy used wlwn li~tc~rling to nionophonic records w i t h a sterco phoiio (*artridge. When i i h t h i j if1 this manner, any posqihle runible or rioise present i i i [lie record, or in the turntable, i \ i l l he elertrically rnncellcd. This p o h i i t i c i t i should also be used to play a monophonic coniponent c.onnrctcd to the AUX inputs ( o r a ~nonophoiiic tape recorder or t u i w deck) through hoth speakel systems. l'hc STEREO position is used for a11 stereophonic programs on records, tape or rodio. t\\o $, 10 Tape Monitor Switch The Tape Monitor switch is used o n l y with stereophonic tape rccorders with separate record uncl plu?~bnck heads. SIiding this switch to the O N position permits listeiiiriR to the tape while it is being recordrd, J'ou can compare the qiiality of your tapes with the original program source hy switching hetween ON ond OFF ivhilc recsording. The Tupe Monitor s w i ~ c his not used for playback of previously rerordrtl tapes, and s h o ~ i l i i a l ~ u y sbe left in the OFF position when a recording is not lieint, nude. Channel Reverse Switch The Chaririel Heverse switch will l i t , found useful when the channels of the programs soiirt:e h a ~ e ,through some error, been inadvertently crossed. This situation r-night arise. for example, during n niultiples stereo program due to D mistrike a t the broadcasting studio. in such cases, simply place the switch in the ON position to restore the channels to their proper position (Channel A on the left and Ctiannel B on the right J . Be sure to return the Channel Reverse switch to OFF for normal listening. Phase Reverse Switch After performing the test on page 6, the sound from your speakers w i l l he properly phaqed unless an aut-of-phase record, radio program or tape is played through the 800-B. I n such a case, the prograni to ~ r + i c h you are liztening may not seem to produce a full, solid tone, c.~perinllyi n the hass region. T o restore correct phasing, slide the f'hsse Revcrse 5wiic.h to ON. If the bass tone improves, leave the switch in the ON position until the end of the program, but be sure to return it to OFF afterwards. FM and A M Tuning The FM tuning knob selects FM stations in the 88 to 108 megacycle Imnd. The Ah1 tuning knob selects AM stations in the 530 to 1650 kilocycle band. Turning each knob will move its respective pointer acres the dial scale and vary the individual FM or AM Tuning Indicator, when the Selector switch is in the FM o r A M position. The Tuning Indicators have a logarithmic response to the strength of broadcast %igriais; that is, they respond with greatest sensitivity to weak signals. and with less sensitivity to strong signals, thus guarding against overloading the indicators. Each station. whether AM or FRI, should be tuned for minimum width of the dark band in the center of the indicator. When this point is reached, optimum reception is assured. For your added convenience, a logging scale with linear divisions from 0 to 100 is included under each tuning dial. By making a noie of the location of your favorite stations O R this linear scale, you will be able to tune to them more quickly and accurately. F W S E INVERTER cn ,:* L iONF A 1ONC Vl6 CM B FOHER AMPLIFIER P CH A PC)WER AMPIIFIER 11 a FIGURE 2. lube layout. In addition to its funrtion as a n FM Tuning Irldicator, the left AlicroKiay is also uFed as the Stereo Ream i n d l c ator for FM multiples reception. With the Selector switch in thr. AIPX FILTER or h I P X STEREO position, the dark area in the center of this indicator will become considerably narrower wheiie\ cr a multiplex stereo program is broadcast. During ordinary rnoiiophonic transmissions. only the left and right edges of the inclivutor will be bright. To find a multiplex progran~. place the Selwtor w i t c h in the h l P X STEREO position and tune across the bnnd until the two bright portions of the Stereo Beam widen, i n d i a t i n g a multiplex program. For fine tuning, t u r n the Selector to FRI and turn the FA1 Tuning knob until the dark Iinnd on the FM MicroRay Indicator is narrowest. When this has been done, turn the Selector back to the hiPX STEREO position to receive the multiplex program stereophonically. Due to the nature of the multiplex system, the noise level of a monophonic program will he somewhat higher when the Selector is turned to MPX STEREO or hlPX FILTER. For this reason, we I iI I i i I , I SWIld 2 ' VNNXNV t i ' fl I I j - t- I I E, f 3 0 Y fa-tr.tic.d t o t h t \ floor of the cabinet. For this installation, proceed as follows: 1-Obtain a a t r i p of wood :!,; inch q i i a r e and 26 inches long. Cut t h i s strip in half to form t w o 13-inch c*Ients. ?-Fasten the two c.le,~tsto the top of the mounting board with wood screws i n tlip Iio5ition s h o w n in Figure 3. Screw heads should he f l i i 4 1 w i t h the top of thr blvats. The11 locate and drill four 1 ;-inch Iiolr4 t l i i oiigti t h e mounting board arid cleats as indicated. 3-Saw a riitorit throiigli t l i ~ front panel of your cabinet to the tliiiieii+ioii+ 4 i n t +11 i i i Figure 1. The distance betveen the top surfare of the niorintiiig hoard and the bottom of the cutout must be the 5iinie ns the hvight of tht. cleats. the 800-R (*hawis through the front of the panel cutout. Slide the chassis into the cabinet until the back of the control imnel is tight against the panel of the cahinet. +---Insert CUSTOM MOUNTING INSTRUCTIONS 5-Insert the four I1h-inch scrtws supplied in the accessories bag through the holes i n the hottoni of the mounting board and fasten the chassis into place. 13 Flush Installation I f the height of the custom c-ahinet will not permit you to mount the 800-B Iiy n i r a i i + of cleats. a- described in the preceding section, the rha.;sis nia! he mounted dirtwly on the cahinet shelf. If the rhasqir is rnountrd in this way, howe\er. i t is essential that cutouts tw made 111 the ihelf as shown i n Figure 3, and that the back of t l i ~c-at)inct rcmnin conipletely open. i n o ~ d t - rto provide proper veritilntion. For a fl usli-moiinted installation, proceed as follows: Installation with Cleats it To jrrox idc. udcyucitc \c.iitil'ition to the t i i i d c ~ r ~ i d of t ~ the chassis, I < advisable to niourit the 800-B on ~ v o o d c ~cleats i which are 1-Locate and drill the f o u r */j-inc.h holes i n the bottom shelf of the custom cahinet as indicated in Figure 3. .;)-Saw cutouts iii the liottom shelf following the outlines shown in I I I I I1 FIGURE 4. Front panel cutout. 14 L T O P SIJRFACE OF SHELF FOR CLEAT MOUNTING Figure 3. It is absolutely essential thnl these cutouts be made as indicated so that the necessary ventilation will he supplied to the ROO-B chassis. 3-Saw a rectangular cutout through thc f r x n t panel of your custom cal)inet to tlic dimensions shown i n Figiirc~-1. Note that the lmttoni of the c u t o u t coirivides with the top of the nictunting shelf, since cleats arc n o t u<ed i n this installation. C-Insert tlir. c*hnssis through the custom c>ubinet front panel cutout. Slide the chassiy iri all the way so that tht. rear of the 800-23 control panel fits tightly against the front of t l l v custom panel. j-Fasten the chassis to the shelf by nit'iiiis of four mounting wrews and flat washers. The screws are insei.trtl l r o m the underside of the shelf, through the holes and into the f o u r mounting holes formerly used f o r attaching the plastic mounting feet. Use the four 1-inch screws and washers furnished i n the accessories bag for this purpose. A t Your Service I t is our desire t h i t l your FISHER equipment operate to your complete satkfaction. We solicit your correspondence on any special p r o b lems that may arise. After you have had an opportunity to familiarize yourself with THE FISHER. we would appreciate hearing from you on how it is meeting your requirements. Your Fisher Dealer Be sure to consult your FISHER dealer promptly if any defect is indicated. He stands ready to assist you a t any time. TECHNICAL SPECIFICATIONS Frequency Response: Over-a II Power Amplifier Section Harmonic Distortion: Hum a n d Noise: High Level Input Low l e v e l Input Channel Separation: Bass Controls: Treble Controls: Low Filter: High Filter: THE FM TUNER Sensitivity : Hum and Noise: Selectivity: IF Rejection: Distortion: Frequency Response: FM Channel Separation: THE AM T U N E R 25-2'5,OOO 5 - 15,000 * 1.5 d b +O. - 2 dh 0.55 fat db d2, dh dl) 23 d b 12 d b 12 d b below rated output below rated output 80 66 50 23 rated output) I5 total variation at 50 cps total variation a t 10 kc per octave below 35 cps per octave above 6 kc Input Sensitivity: Sen s it i v ity : Selectivity; I m a g e Reiection: IF Rejection: PHONO TAPE AUX 3.3 my '7.5 my 0s watts total for rated output for rated o u t p u t '730 mi. for rated output P O W E R REQUIREMENTS THE AUDIO SECTION Music Power: CPS CPS 105-120 volts a t 50 to 60 cycles Power Consumption: 200 watts 1 E .yI .-C 0 .-c0 0, c YI c 0 5 C 3 c 01 .- L 0 Y c Y .-c - m 0
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