C115

Revox C115 User Manual

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E

20

C115

REVOXx®

43.5

Playback

—

-

Switch

the

cassette

recorder

off,

thoroughly

clean

the

tape

guidance

elements

,

and

demagnetize

the

heads.

(->

4.1.2).

-

Setthe

output

level

switch

on

the

rear

panel

to

"O

RuJ29

(L)

(R)

RJ3o

RJ31

(L)

(R)

RJ32

dBu".

-

Insert

the

reproduce

frequency

response

calibration

1

cassette.

-

Spool

the

reference

tape

forward

to

the

10

kHz

sec-

tion

and

start

the

recorder

in

play

mode.

-

Connect

the

LINE

OUTPUT

L

and

R

to

CH

1

and

2

of

the

oscilloscope

and

align

the

reproduce

head

to

iden-

tical

phase

position

of

the

channels.

-

Inthe

315

Hz

level

tone

section

of

the

tape,

align

the

reproduce

level

of

the

corresponding

channel

with

the

aid

of

the

trimmers

RJ

29

and

RJ

30.

-

The

output

level

at

"O

dBu"

corresponds

to

775

mV

with

a

magnetic

flux

of

200

nWb/m,

or

969

mV

for

a

flux

of

250

nWb/m.

-

With

the

trimmer

Ru

31

(left)

and

RJ

32

(right)

align

to

a

linear

reproduce

frequency

response

(0...+1

dB)

at

a

frequency

of

12.5

kHz.

4.3.6

BIAS

and

REC

LEVEL

alignment

-

Turn

the

front-panel

Bias-Cal

and

Level-Cal

potentiometers

to

their

center

positions.

-

Open

the

level

trimmer

potentiometers

RK

01

and

RK

02

to

approx.

2/3

of

the

maximum.

-

Insert

the

IEC

|

cassette.

-

Start

the

machine

in

record

mode.

-

Switch

between

500

Hz

and

12

kHz

-20

dBu

at

the

in-

RKO1

puts.

oy

()

-

With

the

bias

potentiometer

align

to

a

linear

frequency

an

response.

(The

correct

value

is

determined

by

open-

os

ing

the

potentiometer

at

12

kHz

from

the

counterclockwise

stop

position

past

the

level

maxi-

mum

until

the

same

value

is

measured

as

for

500

Hz.

-

Feed

500

Hz

and

adjust

the

level

with

the

trimmers

(CrOz)

—(Metall)

cl

RK

01

and

RK

02

in

such

a

way

that

the

levels

for

source

and

tape

are

identical.

-

Forchromium

dioxide

tape

and

metal

tape,

align

the

—*}—

bias

in

such

a

way

that

a

linear

frequency

response

is

achieved.

Only

one

bias

setting

is

possible

for

both

channels.

R

933

for

chromium

dioxide

and

R

934

for

metal

tape.

If

bias

corrections

are

required

in

the

level

or

between

the

channels,

these

should

be

very

small

because

they

also

influence

the

IEC

|

settings.

Note:

It

is

important

to

start

the

alignment

with

the

IEC

|

tape

in

order

not

to

influence

the

ad-

justments

of

the

other

tape

types.

Questions and Answers:

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Revox C115 Specifications

General

Brand	Revox
Model	C115
Category	Tape Deck
Language	English

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