Eico HF-85 - Page 6

be a monophonic
crystal cartridge or
tv sound. Plug
a
monophonicsource
IntoAUXlLlARYAI,
leaving
the AUX-
ILIARY
A2 input unused. Note
that the input
impedance
at all these
high level
inputs is 0.
5
megohm,
w4iich is
too
low
for
ceramic cartridges
requiring
2 to 3
megohms
input impedance.
For ceramic
cartridges,
use the
MAG.
PHONO inputswith
the
simpleodoptor
networks
recom-
mended by the
manufacturers.
For stereophonic
crystol
cartridges
(Ronette
"Binofluid"
OVturnover
and BF40sin-
gle
needle), the
0.
5
megohm
load provided
at
the
high
level
inputs is
exactly the
loading impedance
required.
5)
AUXILIARY Bl, AUXILIARY
B2: Same
os for AUX-
ILIARY Al,
AUXILIARY
A2
obove.
6)
AM: This input
is intended for
AM tuner or the
AM
output
of an FM-AM
tuner where
the FM and
AM sections
are
independent.
7}
FM;
This Input is Intended
for
an FM or FM-AMtuner
where the
FMond
AM
sections
are not
independent.
Also
the
main carrier or
equivalent
output
from
an FM
Multi-
plex
odaptor.
NOTE: A shielded
coble with
a shielded
"phono-type"
plug should be
used to
connect
from
eoch of
the otove
mentioned
sources to the
corresponding
amplifier
input
jack. Unless
the source
hos
a
low-impedance
output
such
as a cathode follower
(with
which up to 50ft.
of coble
can be used), use the
shortest
possible
connection and
low-capacity
shielded
coble (cable
having
os
low os
25
mmfd capacitance
per foot
is available).
b) OUTPUTS
TO TAPE RECORDER:
The
TAPE
OUT CH.
1
and
CH.
2
faeks
permit feeding
the channel
1 and
chan-
nel
2ilgnals to
a
stereo
tape recorder. With
a meitophonic
source connected to
a
channel
1 Input, the
TAPE OUT
CH.
1
jack
is used
for
feeding out to
a monaural tape
re-
corder.
Lew-capacity shield
audio cobles
wIthRCA-type
phono connectors at the
end may be used
in lengths
up
to
50ft.
to connect each
jack to the tape
recorder ir^juts.
Note that
any inputs
chosen by the
SELECTORswitchfeed
out through these
jocks. All inputs
ore affected by the
LEVEL control
and the LOUDNESS
compensation
switch,
but not the tone
controls.
c) SIGNAL
CONNECTIONS
TO MAIN POWER
AMPLI-
FIERS:
The PREAMP
OUT CH.1 and
CH.2|acks are eoch
connected
to the input
of
a
basic power
amplifier*.
The
two
basic power
ampllfien may be
separate or combined
on one chassis.
Low
capacity shielded
audio cables
with
RCA-type
phono
connectors at the
ends should be
used in
lengthsupto 10 feet
normally. If the
cable cc^ocity
is os
low
os 25
mmfd per foot,
lengths up to
40 feet may be
used
if
necessary.
However, the shortest
possible cable length
should always
be used.
*
NOTE:
If
the user already
has
an
integrated
amplifier
from
his original
monophonic system, it
may be used
os a
basic
power amplifier
by connecting
to one of its
high
level
inputs (tuner,
radio, auxiliary),
setting its tone
con-
trols to the
"flat" positions,
its loudness
compensotlon
control
or switch (if
ony) to where it
has no affect, ar>d
its level
control to
maximum.
In the case of
the EICO
HF12, HF20,or
HF32 integrated
ampl1fiers,a
more direct
connection to
the power
amplifier sections
may be made
by connecting
to the
TAPE OUT jacksof
these units,
set-
ting the
LEVEL control
and LOUDNESS
control (if
any)
to
maximum. In the
case of the EICO
HF52 integrated
amplifier, connect
to the
ELECTRONIC
CROSS-OVER
OUTPUT jack and
snip the
connection between the
ELEC-
TRONIC
CROSSOVER
INPUT
& OUTPUT jocks inside the
chassis;
the control
settings
on
the
HF52 ore then
im-
material.
ElCOnowoffers
a complete lineof
basic power
ompi if iers which
maybe used
in pairs for stereo.
Included
ore the HF60
(60watts roted)
HF50 (SOwatts
rated),
HF35
(35 watts rated),
HF22
(22
watts
rated),
and the HF14
(14
watts
rated).
d)
POWER
CONNECTIONS: The
power cords of the
basic
power amplifiers,
the tumtoble,
and the tuner
may
be
inserted in the
convenience
outlets provided
on the
rear
chassis apron.
The receptacle
marked
117VAC is
intended
for use
primarily
witha phonograph
and provides
1
17VAC
regardless
of whether
the
power switch of the
amplifier Is turned
on or off In
order to protect
the phono-
graph
mechanism.
The receptacle
marked
117VAC
SWITCHED
is
"llve"or''dead"depending
on whether the
preamplifier power
switch
it turned on
or
off
and is
in-
tended
prlmarilyfor
use
with the basic
power amplifiers.
The recommended
method
Is to
plug
the
line cord
of one
basic
power amplifier
into
the
117VAC SWITCHED re-
ceptacle of the
HF85ond
the line
cord of the other
basic
power ompllfler
into either
convenience
receptacle
on
the first
power ompllfier.
Tunersond
otherdevleei
which,
may be
turned
on and
off
with
the preamplifier
power
switch
should
be plugged
Into the remaining
receptoeles
on the basic
power
amplifiers.
HUM
ADJUSTMENT
Aftercheckingthe
preamplifier
for
proper operation,
re-
move
all input
cables
to the preamplifier
and
make the
following
control settings
which
hold throughout the
proc-
ess
of hum
adjustment:
SELECTOR
switch at
PHONO,
MODE switch
at STEREO
NORM.,
both LEVEL
controls
ot
10, LOUDNESS
compensation
switch at
OFF, both
BASS
controls
at
0,
both TREBLE
controls
at -5. The
pre-
amplifier
should be connected
to the
two basic
power
amplifiers
which must in turn
be
connected to
the two
speaker
systems.
The
two
speokersystem
must
be in
phase
and placed
near one
another
for
this
adjustment.
Connect
theline
cordsof
the two
basic
power amplifiers
as recom-
mended in
POWER
CONNECTIONS
above.
Plug the
preamplifier
line
cord Into
a
1
17VAC wall outlet.
Touch
one end of
a length of
hook-up wire
to the preamp
chassis
and check
for a spark
when the other
end Is touched
to
an unpointed chassis
point
on both power
amplifiers. If
a spark
occurs in
either ctse,
reverse the prong
position
of
the line cord
plug for that
power amplifier.
Now
place
your ear close
to both
loudspeokers and
listen to the
hum
level. Reverse
the prong
posltionof the
preamplifier
line
cord
plug in the
wall outlet and
listen
again. Choose
the prong
position glvlngthe
least
hum. Now
connect the
5