McIntosh MR80, Руководство пользователя

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How to Connect and
Back Panel Information
Refer to page 5.
AUDIO OUTPUTS
Use the FIXED OUTPUT j a c k s on the rear panel to
feed program to a stereo control preamplifier or
other equipment which has its own volume control.
The front panel VOLUME control does not a f f e c t the
loudness of the tuner at the FIXED OUTPUT jacks.
The output level is a nominal 1 volt for 100% FM
modulation.
Use the VARIABLE OUTPUT jacks to connect to
equipment such as a power a m p l i f i e r or a tape
recorder where control of the volume at the tuner is
desired. The output at the V A R I A B L E OUTPUT j a c k s
is a nominal 2.5 volts for 100% FM modulation.
There is no difference in the signal quality at either
pair of output jacks.
Both pairs of OUTPUT j a c k s may be used simul-
taneously. The output impedance at both outputs is
very low so that long audio cables can be used
without a loss of high frequencies due to cable
capacity.
RF INPUTS — ANTENNA CONNECTIONS
Two of four d i f f e r e n t antenna systems can be
used with your MR 80. 1) an outdoor FM antenna, 2)
an a l l channel (UHF-VHF-FM) antenna, 3) a cable in-
put from your local cable company, or 4) the indoor
dipole supplied w i t h the MR 80. A switch is provided
on the top level set panel to select between two of
the four systems mentioned.
An outdoor antenna is recommended for optimum
performance in all areas. In fringe areas, best results
will be obtained with a highly directional FM an-
tenna used in connection with a rotator. Rotate the
antenna until the best reception is obtained. Con-
nect a 300 ohm outdoor antenna to the 300 W A N -
TENNA (red) terminals. Connect a 75 ohm antenna
and/or 75 ohm cable system to the coaxial antenna
j a c k .
A f l e x i b l e f o l d e d dipole antenna supplied w i t h
your MR 80 may be used in urban or in high signal
strength areas. The f l e x i b i l i t y of the t h i n f l a t wire
assembly permits it to be placed under a rug. tacked
behind the stereo or placed in any other c o n v e n i e n t
location. In some cases it may be necessary to posi-
tion the antenna for best signal reception. This
should be done before it is permanently located.
Avoid locating t h i s antenna next to other w i r e s or
metal objects. This antenna may not prove e f f e c t i v e
in houses having metal siding or metal clad insula-
tion.
The cable signal from a local cable company or a
second FM antenna with 75 ohms impedance may
be connected to the coaxial cable jack.
REMOTE SCAN
The REMOTE SCAN CONTROL SIGNAL jack is to
be connected to the cable push button assembly
supplied w i t h the MR 80 for remote tuning. Plug the
cable into the CONTROL SIGNAL jack. Pressing the
push button at the end of the cable causes the MR
80 to scan to the next station. The mode of scan can
be selected by the STATION'S slide switch. In the
PRESET position every time the push b u t t o n is
depressed the MR 80 w i l l scan to the next preset sta-
tion. In the ALL position depressing the b u t t o n w i l l
cause the MR 80 to scan to the next station.
If REMOTE tuning is not used, leave the j a c k free
of any connection.
SCOPE
The v e r t i c a l and horizontal scope jacks are pro-
vided to connect to a maximum performance in-
dicator or an oscilloscope for indication of FM
multipath and signal strength. Connect the v e r t i c a l
jack to the vertical input of the indicator and the
horizontal jack to the horizontal input.
UNSWITCHED AC POWER OUTLET
This outlet may be used to power a u x i l i a r y equip-
ment such as an antenna rotator or a maximum per-
formance indicator. Power is available whenever the
MR 80 is connected to a power source.
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