Preparation For Use; Rear Panel Connections; Phono; Tape In - Marantz 2230 Handbook Of Instructions

PREPARATION FOR USE
REAR PANEL CONNECTIONS
All s,gnal connections to the Model 2230, with the
exception of the FM antenna and loudspeakers,
should be made with shielded audio cables. 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. The rear panel signal connections
are arranged in stereo pairs. To avoid confusion,
connect one cable at a time between the 2230 and
the other components of your system. In this way,
you will avoid cross-connecting channels or con-
fusing signal SOllrceswith destinations.
PHONO
The phono jacks are intended for use with
magnetic phono cartridges requiring a standard
47,000-ohm resistive load. If hum is heard when
playing records, it is usually evidence of improper
grounding or shielding of the record player or its
connections. Try reversing the polarity of the
turntable's power plug. If this is ineffective,
connect a separate ground wire from the turntable
or record changer frame to the CHASSIS
GROUND binding posts of the Model 2230 If the
tone arm is mounted on a wood panel or is
otherwise insulated from the tu rntable frame,
connect the tone arm mounting base to the
grounding wire with a short wire. If the two pairs
of signal wires in the arm have a single overall
shield, try grounding the shield instead of the arm
Figure 1. Rear Panel Connection Facilities and Adjustments
itself. Keep the two PHONO connecting cables and
the grounding wires close together to minimize
"ground loops."
TAPE IN
The pair of TAPE IN jacks serve two purposes:
1. With the selector switch in"T APE"position,
signals can be played from a tape recorder
set for playback mode of operation. This
permits playing the tape source stereo-
phonically or monophonically as indicat-
ed by position of MONO pushswitch.
2. With the selector switch in any other
position, and while your tape recorder is
recording, you can monitor the resulting
tape quality by depressing the TAPE
MONITOR pushswitch. This presumes that
your recorder is equipped with separate
record and playback heads and separate
record and playback electronics.
TAPE OUT
Connecting these jacks to the line or "radio"
inputs of a tape recorder permits recording from
the program source indicated by the selector
switch. The signals available at this pair of jacks are
not affected by the balance, volume, treble, mid,
bass, LOW FILTER, Hi FILTER, LOUDNESS
. and MONO pushswitches on the front panel.
2