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Revox A77 Service Manual

Revox A77
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Frequency
Characteristic,
Record
Amplifier
7
1/2
¡
Ps
Courbe
de
réponse
de
l'ampli
d'enregistrement
à 7
1/2
in/s
Test
Set-up: (
pull
oscillator
out
before
measuring)
Dispositif
de
mesure: (
retirer
l'oscillateur
avant
la
mesure)
approx.
2
mV
dB
6
2
AUX.
INPUT
1.077.700+705
VU-
Meter
1.077.480 /
0(
HB5 -
CH
I
HB4 -
CH
II
R
351
100 ≤
2
R
352
24
22
20
18
Voltmètre
électronique
16
approx.
2,5
mV
250
Hz
14
VTVM
12
10
8
A
s
o
o
N
dB
28
26
24
22
20
18
16
14
12
10
8
6
4
2
o
O o
LO
co
N
O
o
Frequency
Characteristic,
Record
Amplifier
3
3/4
¡
Ps
Courbe
de
réponse
de
l'ampli
d'enregistrement
à 3
3/4
in/s
Test
Set-up
as
above
Dispositif
de
mesure
comme
ci-dessus
Equalization
Pot.max.
Pot,
de
correction
au
max.
Mean
Course
for
PE
31
Valeur
moyenne
pour
PE
31
Equalization
Pot.min.
Pot,
de
correction
au
min.
•Cr
CO
CO
0
LO
o 0 0
Hz
- N
CI *
7
e
3
I
s
I
—111
3
o
N
o
co
o
LO
-e
-Y
CO CO
0
LO
N
Equalization
Pot.max.
Pot,
de
correction
au
max.
Mean
Course
for
PE
31
Valeur
moyenne
pour
PE
31
Equalization
Pot.
min.
Pot,
de
correction
au
min.
Hz
3,3
F
13
+ -1I
1f
C
501
100y
F
7502
1100K
R502
BC
109
1,5K
1 K
R503
R506
700mV
T
3,3
pF
c==
2 V
3
4 2
C
507
180
pF
C
508
7503
7504
20
K
20K
P501
k
P502
vk Áv
AA
ef
Nck
A A
4,7
K
4-
8V
R
510
3300p
F
2700pF
mum
mom
C
505
IC506
R502
46.
R504
0502
iQ5O1
R501
C503
R506
47p
F
C512
0,033i.JF
8C108
0
505
330
R515
1K
R516
C5I5
BC
108
0
504
<300m
V-
120
kHz
680
R517
L502
C
517
390pF
3300pF
C
516
0,01pF
C514
6
5
1
3
4
5
100
6
21
V
REL
601
1.077.
715
12
0 V
3 3/4
13
25m
V
12
Record
Amplifier
71/2
1.077.
705
Amplificateur
d'enregistrement
4.71
Diag.
5

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Revox A77 Specifications

General IconGeneral
Wow and Flutter0.08% (7 1⁄2 ips)
Frequency Response30Hz to 20kHz (7 1⁄2 ips)
Signal to Noise Ratio60dB
TypeReel-to-Reel Tape Deck
Track System4-track, 2-channel stereo/monaural
Reel SizeUp to 10.5 inch reel
Motor2 x reel, 1 x capstan
InputsMic, Line
OutputsLine
Tape Speed3 3⁄4 and 7 1⁄2 ips

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