Specifications - Electro-Voice E-V 1180 Electronic Service Manual

INTRODUCTION
This
service
manual was
designed
with
the technician
in
*inO.
tt
has been
kept as brief as possible
without
over-simplification.
All
procedures
are
presented in
a
clear
it*p-Uv-tt"p
manner. Althaugh
we have
tried
to
anticipate
all
'of 'youi
problems and questions,
in
special instances
vou-
*uv
need
additional guidance'
Address
anv
such
SPECIFICATIONS
inquiries
to our Technical Service
Department'
The
sheets
are punched
to
fit
a
three-ring binder
so
that
any production
changes
and
additional service
tips
can be
easity added.
This
will
keep
your
Electro-Voice Service
Data as
uP'to'date as
Possible.
TUNER SECTION
tE-v 11S0& E'V
1159)
Sensitivity:
3
uv,I$f
Fruooun"u
Response:
tl
d8,30-15,000
Hz
-
'-a-----r
tti*it of IHF
specs.
Actual response
greatly
exceed
this {igure.)
AMPLIFIER SECTION
(E-V
1180
&E-V
11221
Power
Output,
IHF
Musie Power:
Continuous
Sine Wave:
FrequeucY
ResPonse:
30
watts
l0 watts
Per
cllannel
into
8 oltms
11.5 d8,20-20,000
Hz at
rated outPut
Hum and Noise:
Tumng Range:
Tuning
Indicator:
Drift:
Harmonic
Distortion:
Power Requirements:
Dimensions,
E-V 1180:
E-V 1159:
E-V 1122:
Better than
55
dBbeiow
100%
modulation
for full quieting
88
to
108 megahertz
Zero
center
meter
Lessthan.A2%
Less
than
17o
at
l0O7o
modulation
2.s dB
22 dB
at
I
kHz
40 dB
GENERAL
110-120
volts.
50-60
Hz AC
5" h.,
157+"
w"
8%"
d'
4/a"
1t.,157+"
w..$Yz" d.
41h" 1t..157r"
w.,8%" d'
Hum and Noise.
---l
rxitiary
tnprt'
Better than 65 dB
below
rated
output
Magnetic Phono
lnput:
Betrer
than
50 dB below
rated output
Channel
Separation: 40 dB
at i,000 Hz
lnnuts:
Mag
Pirono-AuxiliarY
lnimt
SensitivitY,
4 mv
Phono:
er-li-v
l18o):
250 mv
nu* iE-v
irzzi,
loo
mv
Controls
(rotarY)'
Volume witu
onloff
switch
Balance
with
P-uil/mono
switch
Selector
Phono-Tuner-Auxiliary
Bass
Total
variation of 22-dB
at
50 Hz
Treble
Tstai
variation of 22
dB
at
10
kHz
Outputs,
Speakers
4-16
ohms
Per
channel
Siereo TaPe
Recorder
5i*iio
A*iop"on"t
on
front
Panel
Capture
Ratio;
Channel Separation:
SCA
Rejection:
Audio Output
(E'V
1159):
.5
volt
Pet
channel
at
|AA%modulation
and
full
quieting
StereolMono
Switching:
A11
electronic and
automatic
Stereo'Indicator:
-
Panel
light
indicates
presence^
of
stereo
bloadcast regardless
of
Pull/nlono switch
Antenna
Input:
Tern:inals
for
300 ohm FM
aotenna
SERVICING
PROCEDURE
TEST EOUIPMENT
1.
FM
signal
generator,
tuning
88-108.MHz
modulated
+
75
kHz. Attenuator
accurate
down
to
1 i;v'
2.
FM Multiplex
generator (98 MHZ
.cirrier or equivalent
with
caiiuiaieo
nr
livel and
modulation)'
3.
Audio VTVM
4.
DCVTVM
5.
Oscilloscope
6.
Harmonic Distortion
'AnalYzer
POWER
OUTPUT AND
HARIVIONIC
DISTORTION
(E-V 1'..22&
E'V
1180)
STANDARD TEST CONDITIONS:
2
TONE CONTROLS
FLAT
CENTEHED
BALANCE
,
.
INPUT SELECTOR
SPEAKER LOAD
.,..AUX
.
.
.8
oHMS
1,
Terminate
both
amplifier output,channels
into
8-ohrn non'
"
lnJr"iG
load resistors, 12
watt minimum rating'
2.
Simultaneously
perform the
tollowing tor both channels'
ln
I".aiiei with
each
load
resistor,
conneit the input
leads
of
an
I""rirtulv calibrated audio
VTVM and
a
H'D' analvzer'
3.
Connect
a
lowdistortion
audio generator-to
the
"AUX"
input iacfs.
Set
generator
output level
to
25O
mV+
1
dB
@
1000 Hz'
4.
,Apply
AC power
to
the receiver
and carefullv advance
Ublurrnglontrol cloikwise
for
full power output
I
volts
(10
wattsl.
5.
TOTAL
HARMONIC
DISIORTION
should
measure'l'37o
or
less.
The E-V
1122 and
E'V
1190 m?y. !e
checked
to the additional
"pu-"iiicationt
siren
at the
{ront of this manuai'