Fisher 800-b Installation guide

I

ITH

your

purchase

of

a

FISHER

in\trument

you have

com

-

w

pleted

a

chain

of

events

that began

niany

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.

But

the end

step

-

your

purchase

-

is

merely

;i

beginning.

A

door

has

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 instru

-

ment

to

give

long

and

trouble

-

free

service.

In

fact, instruments

we

made

over twenty

-

three

years

ago

are

still

in

use

today.

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.

AN

IMPORTANT

SUGGESTION

Many

hours

have

been

spent

by

our

engineers

*and

technical

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

equipment

before

you,

please

read

this

book

-

let carefully.

It

will

be

time

well spent!

.

Fourider

and

President

1937

1931

1938

1939

1945

1948

1949

1952

1953

First

high

-

fidelity sound systems featuring a

beam

-

power amplifier, inverse feedback, acous-

tic speaker compartments (infinite baffle and

bass reflex) and magnetic cartridges.

First exclusively high fidelity TRF tuner, featur

-

ing broad-tuning

20,000

cycle fidelity.

First two-unit high fidelity system with separate

speaker Prtclosure.

First coaxial speaker system.

First high fidelity tuner with amplified

AVC.

First Dynamic Range Expander,

First 3

-

Way Speaker in a high fidelity system.

First Center-of-Channel Tuning indicator.

First Preamplifier

-

Equalizer with selective pho

-

nograph equalization.

First Dynamic Range Expander with 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 filter

system for high fidelity use.

-

Milestones

In

the

History

of

High

Fidelity

Reproduction

1953

1954

1955

1956

First

Universal Horn

-

Type Speaker Enclosure for

any room location and any speaker.

First FM

-

AM Receiver with a Cascode Front End.

First

low

-

cost

electronic Mixer-Fader.

First moderately

-

priced, professional

FM

Tuner

with TWO meters.

First Peak Power Indicator

in

high fidelity.

First Master

Audio

Control Chassis with five-

position mixing facilities.

First correctly equalized, direct tape

-

head mas

-

ter audio controls and self

-

powered preamplifier.

First

to

use Power Monitor in 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 with TWO meters.

1958

1959

7

960

1960

First Stereophonic Radio-Phonograph with

Mag

netic Stereo Cartridge.

First high

-

quality Stereo Remote Control System.

First complete Stereophonic FM

-

AM Receiver

(FM-

AM

tuner, audio control, 40

-

watt amplifier).

First high

-

compliance plus high-efficiency free-

piston speaker system.

First

to

use

MicroRay for

FM

tuning

and as a

Recording Audio Level Indicator.

First complete stereo

FM

-

AM

receiver with

60-

I

watt power amplifier and new

7591

output tubes.

Smithsonian Institution,Washington,

D.C.,

accepts

for

its

collection America’s first commercially

manufactured high fidelity radio-phonograph,

made

by

Avery

Fisher

in

1937.

First reverberation device.

for

use in highfidelity

equipment

-

The Fisher Dynamic Spacexpander.

First stereo tuner with MicroTune.

I

1956

First complete graphic response curve indicator

1960

First FM tuner with six

IF

stages.

1960

First

FM

tuner with five limiters.

1957

First Golden Cascode FM Tuner,

1960

First front panel antenna selector switch,

72

-

300

1957

First

MicroRay Tuning Indicator. ohm, Local-Distant positions.

for bass and treble.

L

THE

FISHER

800-6

ST

E

REOPHO

N

I

C

FAA

-

AM

and

Multiplex

Receiver

I~E

vixy

L

A

T

E

S

T

TECHNIQ[~ES

in

audio

eiigiricering

design have

T

ticen

incorporated

in

the

FISHER

800-23,

resu!llng

in a stereo-

phonic rc-c.c.iver of

truly

outstanding quality which

i,

\

irtually

ob

-

solescence

-

proof.

With the addition of a

pair

of

Ypeakers and

a

record

player,

the

800-B.

with

65

-

watts

of

hlusic.

Power, becomes

the

nucleus

of

a

complete high

-

fidelity spteni

u~iw

I

paised

in

scope

of feature. and

quality

of

performance. The

1300.13

is

capable

of

reproducing both

FhI-.4hl

stereo broadcasts and

tht.

new

FM

multi

-

ples

Ltcreo-icithout

the

need

for

adding

exlerritrl

cidaptors

of

any

kind.

I’hc

F\I

tuning indicator

ran

also be used

as

a Stereo

Beam

indicator.

signalling

instantly

when

the

station tuned

to

broadcasts

n

multiples

ztertto program.

A

special noise

filter

ih

included, which

has

no

vffect

on

the freqnenc.y rangc

of

the

riiiiltii~les

program.

l’h

e

ti

i

g

h

1

:

;en

si

t

1

ve

I:

i\

I

t

11

n

e

r

u

t

il

i

zcs

w

i

de-

t

)a

11

ri

d

t’

C.

1

g

n

t

h

rougho

u

t

tn

ci~-ill~~t

uriparallelr~ti

irredniii

from distortion

nnci

superb per

-

fo:

manw

on

FJi

multiplex

programs.

‘rhv

:\

11

t

iii1t’i

includes

a

tuneci

RF

mi)lifier

for

estra

sensitivity

and eithc.1

broad

or

sharp

handwidth for

maximum

fidrlity

on

local

stations without sacrificing

selectivity and sensititsity when receiving conditions are more

dif-

ficdt. The

blaster

,4udio

Control

of

the

800-8

includes

the:

full

range of functions

found

on

elaborate professional installations,

including such features

as

sharp

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

ly

the

craftsmanship arid careful attention to

every

detail

of

manufacture

which

have made

FISHER

quality famous.

We

tire

qure that

your

appreciation

of

the

800-R

will

grow

with

time,

as

it

handles

P1er-y

miisicnl

assigriment

with

that

degree

of

perfection that

only

n

top

-

quality electronic instrument con

provide.

TABLE

OF

CONTENTS

INSTALLING

THE

800

-

6

FOR

THE

‘MAN

IN

A

HURRY’

OPERATING

THE

800

-

B

CUSTOM

MOUNTING

INSTRUCTIONS

TECHNICAL

SPECIFICATIONS

PAGE

3

7

8

13

15

A

NOTE

ON

STEREOPHONIC

SOUND

IEH~.:OI~~IC~~~IC:

SotiRD

is

a

ginnt step forwutd in the history

of

high

S

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

clvp~h.

These

live sound qualities are

for

the most part

missing

in

nionophonic

systems

because recoidings are made and

re

-

produced

over

a

single

channel.

This

is

somewhat analogous to listen

-

ing

to

niusic

with one

ear.

Stereophonic recording techniques,

how

-

ever. utilize two separate banks

of

microphones,

positioned

in

the left

and

right sections

of

the orchestra.

In

this arrangement, the

micro

-

phones detect

the

musical sounds

in

much

the

same

manner

as

the

two

ears

of

a listener.

The

sound picked up by

each

bank

of

micro

-

phones

is

then

ied

to

independent channels and recorded

on

disksor

tape,

or

transmitted

ovCr

scporote channels of

a

stereophonic

broadcast.

To reproduce stereophonic

realism

in the home,

two

separate

sound

channel.;

lire

required

to

achieve

the stereophonic effect.

The

stereo

sound

output

of

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

hcarti

[It

cdominaritly

in

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. The

result

is

a

star

-

tling

sense

of

presence

such

as

is

normally experienced

only

at a live

orchestral performance.

FM

MULTlPLEX

STEREO

M

BROADCASTING

has

a

frequency range

far

in

excess

of

the

normal

F

henring range.

For

esampIe, Fisher wide

-

band tuners have

B

frequency

range

which

extends

to

75

kc,

while the

normal

hearing

range

does

not

exceed

17

kc.

This extra “space”

in

the

frequency

m

0

u

f

Y

c

UJ

Iy

3

2

LL

m

-5

8

c

3

ares.

It

has

txrn

found

that

the

aural

CfTt‘vt

of

stereophonic sound

i-

enhanced

I+

11~11

two

itlrntic~sl

speakcr

ti’nis

are

used. Although

111e5e

pi

incipivs

can

wrw

as

a

geiirral

still

t

ing point in placing

you1

loridyeakei,i.

wfi

+trongIy re(mniiiiei1d

that

yoit

experiment with

set

era1 cliffercnt arriinpt~nrentstwfore

dccidit~g

on

n

final placement.

l’lic

iiripredirtable

effects

rcsuiting from

1\11

niture arrangement and

irregularities

in

room

dimensions may

In:iLrs

ii~iorthodoxplacement of

t

11c

1

o

u

d

s

pea

k

e

I‘S

11

e

c

ssa

ry

.

After the

initinl

loc.atiuii

of

the

loud*pr~,ihershas been decided

upon, make the

followiiig

connections:

ONE

SPEAKER:

If

you

are

rising

only

oiic

speaker teniporarily,

connwt it

to

the

LEFT

SPKR

terminal

ltrp

(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 con

-

nect an

8-

to

10-ohm resistor

rated

at

a

iiiiiiimum

of

10

watts to

the

CKD

and

“3”

lugs on the Right SptAaker terminal

lug.

The

4

short wire

proti

iicling

from the chassis

4iuuld

lie connected to

the

“4”,

“8”,

or

”16”

lug

on

the

Left

Speaker

Impedance Selector

t

terminal strip. depending

on

the

impcrlntice

of

your loudspeaker,

TWO

SPEAKERS:

Connec,t the

speaker

011

your left (as viewed from

the listening

area)

to

the terrniiial

lug+

iu‘irkcd

LEFT

SPKR

(one

on each speaker terminal strip), Detertiiiiie the impedance

of

your

speaker

and

ronnert

the

short

wire

pt‘otr

uding

from the

chassis

to

tlie corresponding terminal

lug

oti

thc

hit

Speaker Impedance

Selector terminal

strip.

The

speaker

on

your

right

should

be

connected

to the Right Speaker terminal strip, t~ctweenthe

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

hilt

-

in 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 long-

distaiicv applications.

Thc3

antenna

shoi1ld

be

moved to the rear

and

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

acros

the

AhI

: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

ter

-

minals

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

recep

-

tion.

In

apartment Iiuildings and other Luildings using steel struc

-

tural

supports. reception

can

be

improved

by

placing the antenna

close to

n

window.

If

tacks

or

staples are used to fasten the

antenna

in

p1ac.e. be sure that they do not contact

the

two con

-

ductors 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. The 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.

In

some cases, especially in fringe areas, an 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

IJC

played

through

the

800-R.

The

PHONO

input

jack5

are.

us;rd

for

a

magnetic

cartriclce

anrl

the

PILX

inputs

ore

used

for

;i

cc~rninicrcirtridge.

If

you

ciiiitiot

ascertaiii

whi,*li

of

the two

leads

from

the'

record player

is

the

(,hanncl

A

output

and

which

is

~lic

Chaiinr*l

I?

output, connect

tliern

LO

the

1300-8

nnd

li?tprl

for

normal

plncvtnc‘lit

of

the instru

-

ments

011

a

symphonic stereo

record.

If

the

violiii

.set-tion appears

to

be

lorated

on

the

right,

reverse the

leads

from

thcb

phonograph.

The

(:Iiaiiiiel

Reverse

%witc*h

niny

bc

used

to

c*hcc*k

this

listening

test.

’I‘hc~

instruments

GIinultl

l)e

properly plarcd

\r

1th

the Channel

Revers.

switch

in

the

OFF

position.

(Spwial

te.1

rwnrds

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

output

of

the tape recorder to the Channel

A

5

TAI’E

hION

jack on the rear panel

of

the

800-B.

2-(:onnec*t the

iriput

of

the

tape recorder to the

A

RCRDR OUT

jii(*k

on

the

rear

panel.

NOTE:

During

iilii)

1)ac.k

of

your tapes, place the Mono

-

Stereo

$witch

in

the

RIONO

position

for

sound from hoth speaker systems.

To

monitor

tapes

through both speakers

as

the tapes are being

I-ccordcd

(on

recorders

with

separate

record and playback heads

(Jnl)’),

the

oiit~tiit

of

the

recorder niwt

lie

conncctcd

to

both

T.4PE

hlON

input jacks. This can

easily

be

done

by

obtaining

a

“Y“

con

-

nector

or

IJY

splicing together two shielded cables.

Tape

Decks

A

tape

deck

i-

thv

1:ipe

transport mechanism without the electronic

preamplificrs found

in

tape

recorders.

Such tap

det

k~

may

he

played

output

through

the

800-8

by

connecting the Channel

A

(or

Left

nil

the

tape derk

to

the

jack

on the

NWR

111i1rkedChannel

A

TAPE

HEAD.

’I’hc

Channel

H

(or

Kight)

OIII~I~IL

from

the

tape

deck

should

be

cwnriected

to

the

CIianneI

13

‘l‘;\f’K

HEAD

jack.

A

mono

-

phonic, tape

deck

should

be

connectecl

IO

[hc

Channel

A

TAPE

FI

E

AD

jack.

Spacexpander

The

FISI-IER

St-’u(‘‘.t/-’ciri(ler.

hIodel

K-

10,

YUII

he

connected

to

the

800-B

hy

u$ing

the

ppecial

Spacc~xpcznder

jn(7ks

on

the rear

panel.

Before

in.tiilli;lp

the

.?’pcicc.z.pnniler.

remn\

t.

111(~

LWO

jumper wires

be

-

tween

the

Spnce.ipnnder

jacks hut

retail1

tile

jumpers for

possible

future

uhe.

These

jiinipcrs

must

he

iiisertcd

when

the

Spncexpurider

is

not

conriected

or

the

800-B

will

hr

coriiplctclp

inoperative.

Make

the following connections to the

,Space~purtt/er:

l--Chatinel

A

TO

RE\’ERB

OUT

javk

oii

llie

800

-

B

to

the Chan

-

nel

A

0U’I‘PIJ”T‘

jack

on

tlw

Sptrcesparicier..

2-Cliannel

D

‘1’0

REJ’ERR

OU‘I’

jark

(311

tho

800-B

to the Channel

R

OU‘TPU‘I’

jack

on

tlic

Spac~cxpiirrrlcr.

3--C:hanncl

A

‘I’O

KE\’ERB

IN

jnt\k

on

thr

MI-B

to the Chnnnel

A

1

NPUl

jack

on

the

,Spnce,xpunder.

6

I

4-Channel

B

TO

REVERB

IN

jark

011

the

800-B

to the

Channel

B

INPUT

jack on

the

Spuceipander.

Center

Channel

A

center

channel

speaker

nnd

sel,uratr

power

tlmplifier may

be

added

to

\he sound system

of

your

8017-H

115’

connecting the addi

-

tional

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,

but

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

vav

the

volume

level

of

all

three speak?‘ systems simultaneously.

If

the

left

and

right

spders must

he

placed far apart in your listening

room,

resulting

in an apparent “hole

-

in

-

the

-

middle” of the

stereophonic

sound

pat

-

tern,

a

renter channel speaker

will

be

found

particularly effective

in restoring

a

naturally

balanced

curtain

of

sound.

System

Grounding

The screw t~rrmiiialmarked

GND

on the upper

(Left

Speaker)

terminal

niiiy

he

risetl

to

ground

the motor and tone arm

of

your

rerortl player

in

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\

rnor~ophonic~

rcc

orti

with prominent

bass

material.

2-Slitlr

the

I’haw

Rc\c*rw

Switch

to

ON

and then to

OFF,

and

ronil)arc.

tliv

5oiiiicl

of

thr

l)a+.;

ton^+

under each condition. You

may

fiiltl

it

h(~1p~ttI

to

tiirn

the

Bass

controls

clockwise

and

the

1

retjic

cotitrot+

(

criiriIrrc,loc.krvise

during

thk test.

r.

%-If

thr

IMC.;

wiii~il~

fr~llrr

arid richer

with

the

Phase Reverse switch

ON,

tirrri

ofi

thrs

power LO

the

800-B

and reverse

the

leads to

the

left

speaker.

’l’hen

place the

Phase

Reverse

switch in the

OFF

positio

11.

&If

the

has.; sor~nd

is

fuller

with

the Phase Reverse switch

OFF,

your

speakers are

ulrwrly

in phase

and

no

further

adjustments

are

newsirg.

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

STEP

2

I

~

source you

wish

to hear.

Set

SELECTOR

switch to the program

PHONO

to listen

to

a

record.

MPX

STEREO

to

listen to

a

multiplex

FM

program.

FM

for monophonic

FM

programs.

FM

-

AM

STEREO

for

FM

-

AM

stereo

prosrams.

AM

for monophonic

AM,

TAPE

to listen

to

a

tape recorder,

I

P

r

STEP

3

STEP

1

Turn

on

power

by

turn

-

:.

-

\ffiIfrAAC

,,,A,,l

Set

MONO

-

STEREO

switch to

I~AL~A

r

I.

I

-l:-L+i.*

-I--L..,:ee

..-+:I

:+

1119

~WLUIIIC

LUllllUl

I

MVNU

tor monopnonic pro-

I

nrmmc

I I

3llullll~

LlULKWI>G

Ulllll

II

I

y'UII1.l.

I

STEREO

for

stereo programs.

I

UI

clicks. Adjust

later

for

desired volume.

I

NOTE:

Set

all

other switches and controls in the position shown.

7

0

'I'his adju.;trnent will assure that

thr

qlt5;ikers in your system

"push" and

''pull

"

in

unison, instead of

in

upposition

-

an important

consideration in achieving the maximtiin

stcreo

eflrct

and

good

low

frequency sound.

OPERATING

OI'R

80O-B

is

now

ready for opcration,

hut

like any other fine

Y

piere

of

electronic equipment.

it

niust

IN:

operated correctly in

order to deliLer its

full

capabilities.

Q'e

iirge

you to read these

instructions carefully

in

order

to

uchiet-ci optitiium results.

Volume

Conirol

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

at the estic~meleft position.

This

switch also controls the

two

power

outlets

on

the rear panel.

The

l'olurne control ctianges the sound

I~vel

from

both channels simul

-

taneously.

thus

making it unnecessary

to

tinlance the channels each

time

you change the volume.

Loudness

Contour

Switch

The

Loudness

Contour switch

is

~ist*(I

10

add compensation for

the natural deficiency of

the

humaii

eat

in

the extreme

bass

and

trehle ranges at low volumcs. With

thiq

cwitch

in

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 at

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

(RIAA

)

for all records made since

1954.

MPX

FILTER:

Used for listening to

FhI

multiplex programs

from

weak stations. The fiIter will climinate muth

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

Lroad-

casts 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. The

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

NORRI,4I,

position.

If,

however.

there

is

an inil~lnncein the

pro

-

gram

le\

el<.

you

can re

-

halarice the

wurid

lr\

CIS

by

turning

the

Balaiice

control either

clockwise

(to

increaw

ttic>

sound level

on

the

right

arid

derrease

the

sound

lebel

011

the

left)

or

counterclock-

w1.c.c

(to

iri(,waw

the

left

and

decrease

the

right).

The

Balance

coiltrol

is

not

a

\olurne

control qince the

same

oser

-

all

volume

is

1Il~l~~l~~l~J~Pl~

a$

it

is

adjust~d.

with

the Balance control

fully

counter

-

,

Ioc-Li+i*r.

only

the

left

speaker

will

be

heard;

with

the control

fililv

rlock~

IX.

only

the

right speaker will

be

in

operation.

Bass

and

Treble

Controls

..

1

tip

13,i-

(~)ntiols

inrrease

or

decrease

the

aiiiount

of

Lass

tones

Ii~~trd

11:

the

sound

output. R'itti

the

Bass

controls

iri

the

NORMAL

pmition,

the

t)A\s

tones

will

.-outid

esartly

as

thcj \+ere recorded

at

thv

progruiii

wurtte.

If

you

wisli

to

increase

the

Lass

emphasis

hrause

of

a

Lass

ciehciency

in

the

record,

tape or

radio

broadcast

you

have

wlectcd.

siniplj

turn

the

Boss

controls the de\irt:d amount

toward

the

114X

pwition.

To

decrease the

proiniriencr

of

the

bass

tones,

ttiiri

[hr

Ila-

controls

toward

MIN.

Nornially,

tlic

Bass

controls

for

Left

ant1

Right

Speaker

qystenis rotate together,

hut

if

you

wish

to

arijiirr

the

Has\

serlarately

for

each

channel.

hold

orie

of

the knobs

whil~

tiirninp

the

othcr.

-1

lit>

'i'!talJltA

I

oritrol.

adjiist

the intensity of

tlir.

Irchle

tone

heard

in

th,.

wiiricl

oiitput.

\c

with

the

I3ass

rsontrols,

tlic

NORhIAL

posi-

lion

\till

rviilt

IN

tht:

\iitiic

dcgrtle

of

tr~.l)le

toiir

as e\i>ts

in

the

pro

-

gram

~oiirw.

Tlie

relciti\e

ilniuunt

of

trehlc

toris

~~111

IJ~

increased,

re-

3ulting

III

a

murr

l~tilliniit

aiid

rriq)

\ourid.

I,!

turriinp

the Treble

(*lliitritl-

tunaicl

J1

IX:

iirid

it

(+an

IN>

clrc'i~eci~e~l,

i.csCiiltirig

in

a

more

tnc~llo~+

'iiid

intinlute tone.

I)?

turning

the

cuiitrril

towu,i

d

RIIN.

The

'f'rvi)lts

c~onLtoI+

ruay

ai<o

IJ~

adjusted indit.iciil~lly

for

each channel

Iq

liolding

one

knob

while

rotating the other.

High

and

Low

Filters

Thc

High

Filter

is

a

harp

cut

-

off

circuit

de4piicd

to

remove

an

-

no!

iiig

record

bcratch.

hiss

and

other

high

frequcricy

noise without

To

Listsn

To

A:

FM

-

AM

Stereo

Program

FM

Multiplex

Stereo

Progrom

AT

-

A

-

GLANCE

OPERATING

'GUIDE

Mono

-

Stereo

Turn

Selector

To:

Switch

To:

FM

-

AM

STEREO

MPX

STEREO

or

STEREO

MPX

FILTER

~~~ ~

FM

Monophonic

Program

Ah4

Monophonic

Program

Stereo

Record

Monophonic Record

Stereo Tape Recorder

Monophonic

Tape Recorder

FM

MONO

AM

PHONO

STEREO

(AUX

for

ceramic

cartridge)

PHONO MONO

(AUX

for ceromic

cartridge)

TAPE

STEREO

TAPE

MONO

~~~~~ ~

Stereo

Tape

Deck

Monophonic

Tope

Deck

TAPE

HEAD

STEREO

TAPE HEAD

MONO

dul

li

n

fr

the

is

similarly

trthlc

portion of the

music;il

p~wgr~ni.

The

Low

Filtcr

de.signrcf

to

remove

low

fiqiirnc'y

noise such as

turn

-

table

rumble,

without

weakening

bass

tulle' in the musical signal.

Mono

-

Stereo

Switch

The

MONO

poqition

of

this switch

is

usctf

to

blend together the

t\\o

input

rliunnels

aiitl

to send this

l~l(~d(~l

signal to both

loud

-

.peakcr

$,

It

is

tioriiiaIIy

used

wlwn

li~tc~rling

to

nionophonic records

with

a

sterco

phoiio

(*artridge.When

iihthij

if1

this

manner, any

pos-

qihle

runible

or

rioise

present

iii

[lie

record,

or

in

the

turntable,

i\ill

he

elertrically

rnncellcd.

This

pohiiticiti

should

also

be

used

to

play

a

monophonic

coniponent

c.onnrctcd

to the

AUX

inputs

(or

a

~nonophoiiic

tape

recorder

or

tuiw

deck) through hoth

speakel

systems.

l'hc

STEREO

position

is

used

for

a11

stereophonic

programs

on records, tape

or

rodio.

10

Tape

Monitor

Switch

The

Tape

Monitor switch

is

used

only

with stereophonic tape

rccorders

with

separate

record

uncl

plu?~bnck

heads.

SIiding this

switch

to the

ON

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

swi~ch

is

not used

for

playback

of

previously

rerordrtl

tapes, and

sho~ilii

al~uys

be

left

in the

OFF

position when

a

recording

is

not

lieint,

nude.

Channel

Reverse

Switch

The

Chaririel

Heverse

switch

will

lit,

found

useful when the

channels

of

the

programs

soiirt:e

ha~e,through

some

error, been

inadvertently

crossed.

This

situation

r-night

arise.

for

example, during

n

niultiples

stereo program

due

to

D

mistrike at the broadcasting

studio.

in

such

cases,

simply

place

the

switch

in

the

ON

position

to restore

the

channels to their proper

left and

Ctiannel

B

on the right

J.

Be

position (Channel

A

on the

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

will

he

properly

phaqed

unless an aut-of-phase record,

radio

program or

tape

is

played through

the

800-B.

In such

a

case,

the

prograni

to

~r+ich

you

are liztening may not seem to produce

a

full,

solid

tone,

c.~perinlly

in

the

hass

region. To 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

AM

Tuning

The

FM

tuning knob selects

FM

stations

in

the

88

to

108

mega

-

cycle 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

or

AM

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.

,:*

L

iONF

cn

A

1ONC

Vl6

CM

B

FOHER

AMPLIFIER

CH

A

PC)WER

AMPIIFIER

P

a

FWSE

INVERTER

In

addition

to

its

funrtion

as

an

FM

Tuning

Irldicator,

the left

AlicroKiay

is

also

uFed

as

the

Stereo

Ream

indlc

ator

for

FM

multiples reception. With the

Selector

switch

in

thr.

AIPX

FILTER

or

hIPX

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

trans

-

missions.

only

the left

and

right edges

of

the inclivutor will

be

bright.

To

find

a

multiplex progran~.place

the

Selwtor witch in the

hlPX

STEREO

position

and

tune across the

bnnd

until

the

two

11

FIGURE

2.

lube

layout.

bright portions

of

the

Stereo Beam widen, indiating

a

multiplex

program. For

fine

tuning,

turn

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

i

I

i

I

E,

f

3

Y

0

SWIld

'2

VNNXNV

t,

I

fl

-

t

-

I

'I

I

ij

I

CUSTOM

MOUNTING

INSTRUCTIONS

Installation

with

Cleats

To

jrrox

idc.

udcyucitc

\c.iitil'ition

to

the

tiiidc~r~idt~

of

the

chassis,

it

I<

advisable

to

niourit

the

800-B

on

~voodc~i

cleats

which

are

fa-tr.tic.d

to

tht\

floor

of

the

cabinet.

For

this installation, proceed

as

follows:

1

-

Obtain

a

atrip

of

wood

:!,;

inch

qiiare and

26

inches

long.

Cut

this

strip

in

half

to

form

two

13

-

inch

c*Ients.

?-Fasten the two

c.le,~ts

to

the

top

of

the

mounting

board with

wood

screws

in

tlip

Iio5ition

shown

in

Figure

3.

Screw heads should

he

flii41

with

the

top

of

thr

blvats.

The11

locate

and drill

four

1

;-inch

Iiolr4

tlii

oiigti

the

mounting

board

arid

cleats

as

indicated.

3

-

Saw

a

riitorit

throiigli

tli~

front panel

of

your

cabinet to the

tliiiieii+ioii+

4int+

11

iii

Figure

1.

The

distance betveen the top sur-

fare

of

the

niorintiiig

hoard

and the bottom of the

cutout

must

be

the

5iinie

ns

the

hvight

of

tht.

cleats.

+---Insert 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.

5

-

Insert

the

four

I1h-inch

scrtws

supplied in the accessories

bag

through the holes

in

the

hottoni

of

the mounting board and fasten

the chassis into

place.

13

Flush

Installation

If

the

height

of

the

custom

c-ahinet

will

not permit you to

mount

the

800-B

Iiy

niraii+

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.

it

is

essential that

cutouts

tw

made

111

the

ihelf

as

shown

in

Figure

3,

and

that

the back

of tli~

c-at)inct

rcmnin

conipletely

open.

in

o~dt-r

to

provide proper

veritilntion.

For

a

fl

usli-moiinted

installation,

proceed

as

follows:

1

-

Locate and drill

the

four

*/j-inc.h

holes

in

the bottom shelf

of

the

custom

cahinet

as

indicated

in

Figure

3.

I

.;)-Saw

cutouts

iii

the

liottom

shelf

following

the outlines

shown

in

14

I

-

1

LTOP

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

frxn

t

panel

of

your custom

cal)inet

to

tlic

dimensions

shown

in

Figiirc~

-1.

Note that the lmttoni

of the

cutout

coirivides with

the

top

of

the

nictunting

shelf, since cleats

arc

not

u<ed

in

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

tllv

custom

panel.

j-Fasten

the

chassis to the shelf

by

nit'iiiis

of

four

mounting

wrews

and flat washers.

The

screws

are

insei.trtl

lrom

the

underside of the

shelf, through the holes and into

the

four

mounting holes formerly

FIGURE

4.

Front

panel

cutout.

used for attaching the plastic mounting feet.

Use

the four 1

-

inch

screws

and washers furnished

in

the accessories

bag

for

this

purpose.

At

Your

Service

It

is

our desire

thitl

your

FISHER

equipment operate to

your

com

-

plete satkfaction. We

solicit

your

correspondence on any

special

prob

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

at any time.

THE

FM

TUNER

Sensitivity

:

Hum

and

Noise:

Selectivity:

IF

Rejection:

Distortion:

Frequency Response:

FM

Channel Separation:

THE

AM

TUNER

Sen

s

it

i

v

i

ty

:

Selectivity;

Image

Reiection:

IF

Rejection:

THE

AUDIO

SECTION

Music

Power:

TECHNICAL

SPECIFICATIONS

0s

watts

total

Frequency Response:

Over

-

a

II

Power

Amplifier

Section

Harmonic Distortion:

Hum and

Noise:

High

Level Input

Low

level

Input

Channel Separation:

Bass Controls:

Treble

Controls:

Low

Filter:

High

Filter:

Input Sensitivity:

PHONO

TAPE

AUX

25-2'5,OOO

CPS

*

1.5

db

5

-

15,000

CPS

+O.

-2

dh

0.55

fat rated

output)

80

db

below

rated

output

50

dh

23

dl)

total

variation

at

50

cps

23

db

total

variation

at

10

kc

12

db

per

octave

below

35

cps

12

db

per

octave

above

6

kc

66

d2,

below

rated

output

I5

3.3

my

for

rated

output

'7.5

my

for

rated

output

'730

mi.

for

rated output

POWER REQUIREMENTS

1

105-120

volts at

50

to

60

cycles

Power Consumption:

200

watts

C

E

0

0,

.-

.yI

.-

c

YI

5

0

01

C

3

c

.-

c

L

Y

0

Y

-c

c

.-

m

0

-

Fisher 800-B Installation guide

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