Viking FF75 Series User Manual

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VIKING

FF75 Series

The Viking FF75

covers erase

FF?5SU indicates head

indicates

professional

for

of

basic mechanism,

and record-monitor

plus

monaural

tapelifter and

The Viking FF?5

playback

These recorders

the

tape, the

FF?5 Series

quality

recorded

of

recording

Series

I'F?5R indicates

operation

stacked

and

erase-record

pressure pad

Series

playback,

tape.

have

time is as follows:

Reel Size

(600

5" ?"

is

designed

ft.

(1200

GENERAL

tape transport

(3

staggered

can be

recording and

These

two tape speeds,

)

ft"

)

to

operate on 60

heads),

heads, L

stereophonic heads,

accessory.

used

with

amplifiers

3 3/ 4"

I

hour

2 hours

Manufactured

Viking

3520

East 43rd

Minneapolis

I NFORMAT ION

mechanism consist

erase-record heads

FF?5S indicates stacked

suffix indicates

the Viking RPOI Record-Playback

duplicating,

are covered in

7 L/2"

or used with

andS

Speed

of the foiiowing

supplied,

FF?5SR indicates

tapelifter accessory

the

this manual"

persecond"

3/

4"

7

L/ 2"

Speed

2

1/

hour

I hour

cycle, 105-125 volts, AC

by:

of

Minneapolis

Street

6,

Minnesota

supply

types: FF?5

FF?5RM

stereophonic

PB60

Usingboth tracks

indicates

stereophonic

and LP

amplifier

Preamplifier,

only"

heads,

suffix

for

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Copytight 1957

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compiled

ond

published

by

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.

All

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stt 344

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w

Power

Tape

by

Not

higher

_Frequency

Ips

Signal-To-Noise

acteristic

transformer within

Flutter:

Weight:

Record

Requirement:

Speed: 7-L/

changing

recommended

belt to smaller

than 7500

Response:

Tape speed.

can

or

12

inches

per

0.3

pounds.

11

Head

Characteristics

Track

Gap width

D-C resistance

Inductance

Erase

Head

(if

Track

Gap width

DC

Inductance Impedance

SPECIFICATIONS

110-volts,

(3

2 ips.

for

cps.)

Ratio:

adversely

be

other

of the

cent or less.

width

used):

width

resistance

3/ 4" ipsspeed

reproduction

50

to

45 db

sources

playback

AC,

groove

15,000

or

better.

affected

strong

of

head

:

60 watts.

is

on motor

of frequencies

plus

cps

(This

location

by

magnetic fields

heads.

or

0.009 in.

0.0015 300

290

0. 125

30 mh

10K at

39K at 100kc

008

ohms

mh

ohms

30kc

in.

at

I kc

FIGURE

available

pulley.

al7-I/ 2

char-

)

I

receptacle.

position.

Threading The

of

and an empty

sure the

asectionof

the tape in

side face

NOTE: This

three

the reel several

tape

between

To

OPERATI NG

1. Plug in

2. PlacetheTape

3.

Turn

the AC switch

Tape-

1.

Place a

reel

slots engage

2.

Unwind about

thetape straight

the tape

in

toward

recorder

i. e.

the dul1 magnetic

ward

on

(coated

"8" will

be

playback

the

Insert

3. radial sl.ots

is secured

reels.

Record

From

Turn the On-Off

l.

NSTRUCTI

I

the AC

reel

cord at a 110

Motion

on.

of tape on

on

the right reel

the

10"

of

tape frorn

with

slot making

the head.

uses Type

reel. If

the

side facingoutward)

made

at

a very

will

be almost inaudible.

the free end

in

the

turns,

of the tape into one of the

hub

counterclockwise,

to the reel

Microphone-

control

ON5

volt, 60

Control

left

the

plate (15)

pins

on the reel

both hands

sure

I'Atr

coated

the

tape used

low

sound

the empty reel. Turn

of

I'Sil

in

the

piate

reel

the reel. Hold

and insert

the dull

wound tape,

side faces in-

is Type

recording

the

level

until the

and

all slack is taken up

clockwise

cycle

stop

(27)

making

plates.

coated

and

the

on

Page 2

amplifier

tubes to warm up.

jack.

used, and

2. Insert

rnicrophone

the

3. Place the Play-Record

position.

4.

(forward)

your the

cator peaks

will.

consequent

when

way

To

of

Move the Tape Motion Control to

position.

5. Hold

mouth and

"Volume"

respond.

to

do not

avoid

saturation or overloading of the tape with

microphone about six inches

the

speak

control

Check to be sure that the

cause the eye to close entirely. This

distortion.

the electronic eye indicator

on recording

Record From Radio-

Recordings

three ways:

1.

Place the

peaks.

from a radio may

microphone about

allow about thirty

in a normal voice.

causes the

recording is obtained

Good

seconds

piug

into

the

switch in the

electronic eye i.ndi-

Adjusting

maximum

closes

less

made by one

be

l2!t in front

to

6rr

of the radio speaker. Turn the radio volume

a normal level.

to

tortion. Turn treble.

cording

Set the

as described under

phone".

as

other sounds may

which as a result will

the

recording

Thistype of recordingmaynot be

Setting

radio

it

high will cause

to

control to

tone

level and

'tTo

picked

be

recorded on the tape.

be

proceed

Record

up by

maxirnum

From

.satisfactory

the microphone

for

I'Miket'

record

rtFt'

the

from

half

than

control

dis-

with re-

Micro-

FI

the

2

GU RE

2. Have a shielded

conductor

on

the

phone plug

other end.

the

voice coil terminals on the

insert the cord

and Volume and Tone controls as

radio

above. Set the

cribed

phone

across the

plug

proceed Record

volume and tone controls

and

To Record Frory_.Phonograph-

"Radio-Phono" ceedwiththe

To

ingas

by

under

"To

3. Have plug

a

on one

radio

into

the

"input

with the recording as described under

From

Microphone". The

may

be

set

1. If the

plug

type

on the

recordingas described

From

Microphone".

Record

"To

Fast

moving the control

From

1.

Use one of the three

Record From Radio"

described under

Forward And Rewind-

High-speed

?:ffi

cable made

on

one end

Connect the

plug

into the

recording level and

Record From

shielded

end

volume control.

jack".

anywhere.

phonograph

pickup

jack.

Set the

Television-

ilTo

forward

knob

and two alligator clips

alligator clips

ilinput

Microphone.'r

with a two conductor

cable

and the other end connected

Set the recording

has

no effect on this

being used

leads,

recording level and

methods described

andproceedwithtHe

Reoord

reverse can be

or

(6)

toward

up with

radio speaker

jackil.

proceed

Insert

position

has a

a

two

across

and

Set the

described

as

des-

phone

the

leveL

and

of the radio

"To

set up

standard

insert it into the

pro-

under

From Microphoneil.

"To

the

Record

under

record-

obtained

head

for

o

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r( rri

tt-

de

tn

o

=.o

n

Page

3

from

rewindand all the

Movement

of this

sired reel at a high

position,

this

way

control

speed as

This control

catingadesiredportionof

To Play A Recory!!4g-

l.

the Tape".

fier

Thread tape

2.

Turn control

playback.

to

3, Adjust tlte

desired listening

To Edi.t And Splice

NOTE:

Since

it is

track without

as described

knob

t'Volumet'and

level.

Tape-

impossible to edit

affecting the other,

which are to be

one trdck only.

l. Thetapemaybeeditedby

portions,

Announcements may be inserted between

etc.

Unused

joining

or by

sections of tape can be

selections into another

head for

the

will wind the

long as

primarily

is

arecordingin

under

I'Forward'!

(6)

to

t'Tonetr

edited

should

cutting out

tape on

the

a few

and splice one

be

spliced together

for re-use.

2. Forbestresults, cuttape at

join

ends

and trim off any excessive

Erasing

together

Recorded

Units

matically when unit

desired

to

on the tape follow the

leave

but

counterclockwise

with splicing tape on the

Material-

having erase head the tape

is

in the

erase a recording without

normal recording

tJre

"Volume"

position.

width.

control set at

a slight diagonal,

record

position,

is erased

putting

fast forward.

the de-

control

controls

is in

in 1o-

used

seconds.

rtThreading

and ampli-

for

recordings

limited to

unwanted

sequence.

selections,

glossy

side

auto-

ff it is

anything

procedure,

its extreme

forced away lrom the bracket

be

inchwhenthe Tape Rewind Drive Adjustment-

Motion

Control

Set rewind drive adjustment

(26)

spring

Tape

adjustment

reel brake

Takeup

No adjustment is

could oceur only because

ure

damage to

Adjustments-

IIead

Head

(A

thinner

cause

adjusted

special

and justment

retaining

turn

tape,

mum volume oscilloscope,

(Adjust

andadjust.thetwo

indication.

necessary for

is ing nut and check to

does not bear

Motion Control

must not

adjustment.

Reel Brake-

(18).

pad

on bearing

is in

be changed

)

provided

height is determined by

a very

provided

width.

high frequency

spacer is

of added track

using

indicators. Do

unnecessarily.

To adjust

head face

nut slightly and,

(22)

head

azimuth before completely

To adjust

to obtain

azimuth

use

set-screws alternately

A high

frequency tape

precise

adjustment.

see that

"Stop"

)

not attempt azimuth

parallel

using constant

position

a suitable allen

results. Use of an oscilloscope

essential.

heads

adjustment.

to tape.

The

is indentical. An erase

Merely

procedure

position

for adjustment of binaural

head requires no

the

approximately

is in

"Stop"

(25)

nut

bracket

position.

after setting

necessary.

or

excessive

of

fixed

erase head

for

Each head is

alignment tape

to tape,

providing

meter

or

re-tightening

L/ 64

position.

so that

when

(This

supply

Fail-

wear or

spacers.

(21)

be-

factory

ad-

loosen

frequency

maxi-

indication.

nut.

wrench

for maximum

(at

ieast 7500 cps)

Tighten

no reduction in output

or output

head so face is

retain-

meter

azimuth paralLel

)

is

ADJUSTMENTS

Removal Of Main Escutcheon-

panel,

To remove front

pensator", ing screws at

from

place

panel

off

Takeup Drive

loosen

andmovebracketto right, increasing belt

NOTE:

tapelifter

top

tape motion

tape motion control

(24).

Belt-

If

takeup reel

the

the idler bracket

Tootighta belt will cause undesirable

on tape

right as to cause the

to

(if

and

control

during

intothe takeup reel

placed

is

Supply

Control

Reel Brake-

Place Tape Motion

sition, loosen

Blightly

clear of supply

this adjustment

and so

brake

adjust bracket that

reel hub

properly

remove

used), the

bottom

edges

(6).

With motor turned

in forward

(20)

does not drive

mounting screw

play.

Do not move arm

hub when the Tape

in the rewind

Control

bracket

mounting

(2?).

Tighten

made the brake

"tape

four

and remove

position

lower corner

(6)

in

pad

feed com-

panel

retain-

and lift

properly,

(46)

slightly

(13)

tension.

tension

position.

Motion

"Rewind"

screws

(28)

is

screw.

spring will

knob

off,

so far

to dig

po-

(4?)

just

With

Adjustment Of

Assemblies-

NOTE: Pressure

Tapelifter

pad

binaurai or erase

(two

heads). Thetapetifter

is

ever,

Adjust

barelyin

is in

stalled

mounting necessary to

of

bracket

contact

forward

after front

screw. Bend

and approximately

head

(20)

position,

pad

assembly

pad

holder spring

in

very

path.

noticeableasthepressure

I'Forward"

the

lightly

No appreciable

position.

panel

is in

the

"StopI

Adjustment

The

to

absorb

and average out

adaptable to

(53)

cam

with lifter

position.

panel

bring tapelifter

when Tape

installing

When

(5?)

it may be

(59).

position,

the face of

on

The mounting

place

only

t'Rewind"

or

Tape Feed

Of

purpose

of the

And

Pressure

assemblies can be

record head assemblies

mechanism,

single head unit.

shift rod

on

when Tape

See that

is in

tapelifter

l,/16

Motion Control

(14)

Motion

lifter assembly

place)

is bottomed

support

fingers

parallel

inch above top

(6)

or readjusting

necessary to

With the

flexing

pads

screw is

if the tape

position,

Compensator-

"tape

the slight

tape

pad

heads and

of

the

rest squarely

springs

the

are raised to

accessible motion

feed compensatorl

variations

Pad

used

so that

on

only

how-

it is

Control

(in-

slightly

on

face

to

head

of

rtstop'

is in

pressure

a

motion control

on the

bend

should

lifted

the

and

tape

after the

control

is

in tape

if

be

in

is

Page 4

Viking FF75 Series User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual