Connecting The Model 22358; Rear Panel Connections; Phono Inputs; Tape Jacks - Marantz 2235B Handbook Of Instructions

Figure l. Beat Panel Connection Facilities and Adiustments
CONNECTING
THE MODET 22358
REAR PANEL CONNECTIONS
Figure 1 shows the location of input and output
jacks on the rear panel. These .jacks are for
"permanent" connections. Front panel jacks and
their use will be discussed later, All connections
to the rear panel should be made with the power
to the entire system turned off. The rear panel
signal connections are arranged in stereo pairs. All
signal connections to the Model 22358, with the
exception of the FM antenna and loudspeakers,
should be made with shielded audio cables. To
avoid confusion. connect one cable at a time
between the 22358 and the other comoonents of
your system. This is the safest way to avoid
cross-connecting channels or confusing signal
source outputs with inputs.
PHONO INPUTS
The PHONO jacks are intended for use with
magnetic phono cartridges and have a 47,OAO
ohm input impedance.
lf a hum is heard when playing records, this is an
indication that the record player or its connec-
tions are inadequately grounded. Connect a sepa-
rate ground wire from the truntable or record
changer frame to the CHASSIS GROUND binding
posr of the Model 2235B. lf this is ineffective, try
reversing the polarity of the turntable's power
p lu g.
lf hum persists, consult the instruction booklets
for the turntable and/or phono cartridge.
TAPE JACKS
The rear panel of the 22358
two tape recorders.
can accommodate
The terms lN and OUT refer to the input and
output of the Model 22358. Therefore, the lN
jacks on the Model 22358 accept signals from the
line outputs of each tape recorder; the OUT jacks
feed signal to the tape recorders' line inputs.
AUX INPUTS
The AUX input jacks are for miscellaneous
high
level signal sources such as additional tuners
and/or receivers, tape players, phonographs that
provide RIAA equalized high level output, TV
sound outputs and other external components.
FM ANTENNA
The best FM reception is obtained with a Log-
Periodic type antenna mounted on a good quality
rotor system. For fringe areas, Marantz recom-
mends a Log-Periodic antenna with six or more
elements designed expressly for FM reception. To
minimize local noise and multipath picked up by
the lead-in wires, use a balanced and shielded 300
ohm cable or a coaxial 75 ohm cable with a 300
to 75 ohm matching transformer at the antenna.
Unshielded lead-in acts as an omnidirectional
antenna, and can cancel the directional benefits
of vour antenna. Low-loss 300 ohm shielded
cable consists of two inner conductors plus an
outer shield and insulating lacket. This type of
shielded cable effectively prevents the lead-in
f rom contributing multipath distortion.