Use shielded cables to connect the signal from the
preamplifier or signal source to the power amplifier. To
minimize the possibility of hum the shielded cables
should be of parallel construction or loosely twisted
together, located away from the speaker connecting
cables and AC power cords. Be certain to use good quali-
ty shielded cables for all interconnections. Your dealer
can advise you on the kind and length of cable that will
best suit your installation.
The appropriate length and size of the loudspeaker
cable for your installation will help to preserve the high
quality of sound for which the loudspeakers have been
designed. If undersize wire is used, resistance is added to
the amplifier/loudspeakers combination which adversely
affects the performance. Added resistance reduces the
damping factor, modifies the frequency response and
reduces the power output. Your dealer's advice will serve
you best for your installation. The cables to and from the
speaker should be of parallel construction or be loosely
twisted together. The chart shows the recommended
minimum wire size for the length of wire between the
amplifier and the loudspeakers.
SPEAKER CABLE LENGTHS
AMPLIFIER TO SPEAKER
For 4 Ohm Load
For 8 Ohm Load
Wire
Feet
15
25
40
60
100
Meters
4.6
7.6
12.2
18.3
30.48
Feet
30
50
HO
120
200
Meters
9.1
15.2
24.4
36.6
60.0
Gauge
18
16
14
12
10
These speaker cable lengths represent a wire resistance
equal to 5% of a speaker impedance, or 97.5% transfer of
power.
HOW TO CONNECT LOUDSPEAKERS
Rear panel push connectors are provided for three pairs
of stereo speakers. The corresponding front panel
pushbuttons turn the speaker pairs on or off.
Connect the leads from the left main (1) loudspeaker to
the SPEAKERS L 1 and Common push connectors.
Connect the leads from the right main loudspeaker to
the SPEAKERS R 1 and Common push connectors. Con-
nect a second and third pair of speakers to the SPEAKERS
2 and 3 push connectors in a similar manner. To maintain
frequency response, power output and damping
characteristics, each speaker requires a separate cable be-
tween the receiver and the loudspeaker.
HOW TO CONNECT A TURNTABLE
Connect the left channel cable of the turntable to the L
PH1 INPUT jack. Connect the right channel cable of the
turntable to the R PH1 INPUT jack. Connect a second
turntable to the PH2 input jacks in the same way. Con-
nect the turntable's ground wire to the GND terminal.
Automatically shorting phono jacks eliminate the poten-
tial for hum and crosstalk and the need for shorting plugs.
CONNECTING PROGRAM
SOURCE GROUNDS
A ground (GND) post is provided to connect the
grounds from record changers, tape decks, etc. To pre-
vent hum pick-up, the left and right program cables and
the ground wire from that source should be wound or
loosely twisted together. Make sure the ground wire does
not make any contact to the shields of the left and right
program cables as they run between the source and the
input of the preamplifier.
HOW TO CONNECT A CD PLAYER
Connect a cable from the left channel output of a com-
pact disc player to the L CD input jack. Connect a cable
from the right channel output to the R CD input jack.
When the MAC 4200 input selector switch is turned to
CD/AU2 (compact disc player or auxilliary source) the sta-
tion display area will show AU2.
HOW TO CONNECT TV AUDIO
Audio from a TV monitor or any other high level source
is connected to the AUX INPUTS. Connect a cable from
the left channel audio output of a TV monitor or other
high level source, to the L AUX INPUT jack. Connect a
cable from the right channel audio output to the R AUX
INPUT jack.
When the MAC 4200 input selector switch is turned to
the TV AU 1 position (television set or auxilliary source),
the station digital display area will show AU 1.
HOW TO CONNECT TAPE RECORDERS
TO RECORD:
Connect a cable from the MAC 4200 L TAPE 1 OUT jack
to the left high level input of a tape recorder. Connect a
cable from the R TAPE 1 OUT jack to the right high level
input of a tape recorder. Connect a second tape recorder
in the same manner to the TAPE 2 OUT jacks.
TO PLAYBACK OR MONITOR TAPE:
Connect a cable from the left channel output of a tape
recorder to the MAC 4200 L TAPE 1 IN jack. Connect a
cable from the right channel output of a tape recorder to
the R TAPE 1 IN jack. Connect a second tape recorder in
the same manner to the TAPE 2 IN jacks.
FRONT PANEL TAPE 2 RECORDER JACKS
TAPE 2 input and output connections are also available
at the TAPE 2 IN-OUT jacks on the front panel. Metal
shielded 1/4" stereo phone plugs are used. The connec-
HOW TO CONNECT 5
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