Fisher MPX-100 Owners Manual
HE
FISHER
tuner to receive multiplex broadcasts in full stereophonic sound.
T
The experience gained from years of leadership in the design and
manufacture of FM tuners has been applied to the design of the
MPX-100
multiplex adaptor
BEACON is
program and turns off as soon as the station reverts to ordinary monophonic transmission. At the same time, the FISHER Automatic Switching System senses whether the program transmitted is stereo or monophonic and switches the
making it unnecessary to switch back
on your adaptor. Feedthrough connections for all types of tuners
mono
arc provided, even when the
noi~c filters can be operated by a single front panel sw~tch. One filter
oiTectb: the noise in the subcarrier only, thus providing full frequency
rewpoose; the other filter is designed to provide a steep roll-off al~ove
8
kc
lor reception of multiplex signals under more difficult conditions.
Most important of all are the careful attention to every detail of manufacture and the top-quality parts which have given FISHER products
a world-wide reputation for remarkable durability and outstanding
reliability.
MPX-100
and has made it the best performing and most convenient
a~~tontatically illuminated when you tune to a multiplex
is designed to adapt your FM-AM or FM
111
existence. The exclusive FISHER STEREO
MPX-100
into the proper operating mode, thus
and forth between stereo and
MPX-100
is turned off. Two separate
THE
FISHER
UNIVERSAL
MPX-100
Stereophonic Multiplex Adaptor
L
INITIAL ADJUSTMENTS
11
FISHEII
with the
A'
ate with any tuner or receiver employing either a ratio detector or a discriminator to demodulate
designed to operate perfectly with such a
provided with special controls. As a result of careful design and the use
of precision parts, however, it was possible to reduce the number of
controls on the
rear panel, and the Output Level controls also on the rear. The Separa-
tion control must be adjusted to provide the maximum degree of
stereo separation between channels for each particular model tuner.
In addition, two MPX input jacks are provided on the rear panel,
one to match tuners with low level outputs and the other to match
those with high outputs. These adjustments need be made only once,
when installing the
(:otts~~lt
input
tuner is not
detector. unbalanced ratio detector, or discriminator.
tuners and receivers will give excellent results when.used
MPX-100.
MPX-100
the Installation Guide on page 3 for the correct MPX
jack and Separation control setting for your tuner. If your model
listed, determine whether it employs a balanced ratio
Your MPX-100 has also been designed to oper-
the FM signal. Naturally, a multiplex adaptor
widc variety of tuners must be
to only three: the Separation control on the
MPX-100.
TABLE
INSTALLATION GUIDE
FM
MULTIPLEX STEREO
GENERAL INSTALLATION AND
OPERATION INSTRUCTIONS
OF CONTENTS
PAGE
5
the
MPX-100.
outj~ut of your tuner to the LOW LEVEL jack.
MPX
NOTE:
may have to contact your dealer or the manufacturer.
you
it impossible to determine the maximum discriminator output of your
tuner, use
LEVEL
plex transmission from a weak station.
If
the maximum output is below
If
your instruction manual does not contain this information,
the
HIGH
jack if the STEREO BEACON fails to light during a-multi-
LEVEL jack initially. Change to the
120V
1.5
volts, connect the
300W
MAX
If
you find
LOW
INSTRUCTIONS FOR OWNERS
FISHER TUNERS AND RECEIVERS
CUSTOM MOUNTING INSTRUCTIONS
Ratio Detector Tuners
The MPX output jack of all ratio detector tuners should be con-
nected to the LOW LEVEL input jack on the rear panel of the
MPX-100.
3
for unbalanced ratio detectors and at 4 for balanced ratio detectors.
Discriminator Tuners
The Separation control of the
all discriminator tuners.
(at the MPX output jack) is above
of your tuner to the
The Separation control on the
If
the maximum output of the discriminator
HIGH
LEVEL input jack on the rear panel
OF
MPX-100
MPX-100
1.5
should be set at 4.5 for
volts, connect the MPX output
should be set at
7
9
of
I I
i
I
OUTPUT
OUTPUT LEVEL
L
@
SEPARATION
ToTuNEa@Y$FL
MPX
OUTPUT
105-12OV
@
k%L
0
I
I
1
.I
!
TUNER
MODEL
Fisher
FM-40
!
FMSO
FM-9O(X)
FM-100
FM-200
90-R
90-T*
100-R
1 00-T
101-R
202-11
202-T'
TA-500'
5oo.S
600 (Serial No. below 49999)
600 (Serial No. above
800
50-R**
70-RT**
EM***
80-T***
FM-80**
Altec-Lansing
306-A
-+
Bell
670
2421
2425
2441
3070
INSTALLATION
SET SEPARATION
GUIDE
CONNECT TUNER
~px
CONTROL AT: JACK MARKED
50000)
4.5 HIGH
OUTPUT
LOW LEVEL
LOW LEVEL
LOW LEVEL,
LOW LEVEL
LOW LEVEL
LOW LEVEL
LOW LEVEL
LOW LEVEL
LOW LEVEL
LOW LEVEL
LOW LEVEL
LOW LEVEL
LOW LEVEL
LOW LEVEL
LOW LEVEL
LOW LEVEL
LOW LEVEL
HlGH
HlGH
HlGH
HlGH
HlGH
LOW LEVEL
HlGH
HlGH
LOW LEVEL
LOW LEVEL
10
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
TUNER
MODEL
SET SEPARATION
CONTROL AT: JACK MARKED
CONNECT TUNER
MPX
Bogen
3RB-40
SRB20
ST442
ST662
STP52
Grommes
Harman-Kardon
TA-260 (Festival ll)
TA-224 (Recital)
T-230 (Sonnet)
T-220 (Aria)
ST360A (Madrigal)
FA-10 (Sonata)
F-10 (Tempo)
Citation
Ill
F500
Karg
CT-3
4.5 HIGH
Mclntosh
MR-55 4
*Requires additional stereo amplifier.
**Multiplex output jack must be added. See page 8 for instructions.
***Multiplex output jack must be added to early production models.
See page 8 for instructions.
OUTPUT
HlGH
HlGH
HlGH
LOW LEVEL
HlGH
HlGH
LOW LEVEL
HlGH
HIGH
HlGH
HlGH
HlGH
HlGH
HlGH
HlGH
HlGH
LOW LEVEL
LOW LEVEL
LOW LEVEL
TO
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
LEVEL
3
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