Pontiac FIREBIRD 1972 Service Manual page 1430

ACCESSORIES 15-15
which is operated by turning the bezel behind the tuning
knob. If the bezel is in a complete clockwise position, the
volume of the rear speaker(s) will be loudest. Likewise,
complete counterclockwise position gives full front spea-
ker(~) volume. This control has no effect on the balance
of stereo channels.
The stereo system on B Series includes four speakers, two
front and two rear. The right rear and left front speakers
are one channel and the left rear and right front are the
other channel. This gives a criss-cross or surrounding
sound effect. On G Series the front speaker plays one
channel while the two rear speakers play the other chan-
nel.
Speaker location is shown in Fig. 15-12.
When an FM station is capable of transmitting in stereo,
the stereo indicator lamp will light (the word "STEREO
on B Series will light). This indication of stereo, however,
does not always mean the station is transmitting stereo at
that particular moment. The perimeter of good FM stereo
reception will be generally less than 25 miles.
WINDSHIELD RADIO ANTENNA
All models are equipped with a windshield radio antenna
including models without radio (X Series only have a
windshield antenna with a radio or no radio with tinted
glass). This antenna is the only available antenna on 1972
models. The windshield is installed and the antenna lead-
in is provided under the instrument panel. For installation
details, see the body manual for 1972.
Following are a few of the advantages of this design:
1. The antenna cannot be broken off by accident, auto-
matic car washes or by malicious destruction.
EITHER A M RADIO
OR A M l F M RADIO
FRONT
Any antenna windnoise problem is eliminated.
Vastly improves overall appearance of car.
Noticeably improves FM reception. All FM signals
are transmitted and received in a horizontal plane.
The top segment of each antenna conductive element
is mounted horizontally and measures 31 inches, re-
sulting in ideal FM reception.
AM reception is restricted to a shorter range, thus,
eliminating unwanted distant station interference in
the evening hours
-
AM signals are transmitted and
received vertically and the verticle portion of the con-
ductive element serves as the AM reception antenna.
It is comparable to an external antenna extended to
a height of approximately 18".
TESTING: The antenna can easily be checked using tester
5-23520 as shown on the chart in Diagnosis Section.
RADIO/TAPE PLAYER COMBINATION
Two integral radio/tape player units are available on B
Series only; AM, or AM-FM Stereo Radio/Tape player.
This unit uses a standard eight-track tape cartridge that
is inserted through the spring loaded radio dial. Track
selection is made by pushing the left hand (volume) con-
trol knob, while cartridge ejection is controlled by the
"EJECT" pushbutton. If there is no cartridge in the tape
player, the eject button is also an AM or FM station.
Front-rear speaker volume is controlled by the right-hand
control bezel.
This integral design offers several advantages over a sepa-
rate tape player unit:
1. Neater appearance.
4 1 in canter of I.P.
-
F
F i g .
15-1 2
F r o n t a n d R e a r S p e a k e r L o c a t i o n
A SERIES
WON+
1
c o w .
[OTHERS
FRONT
EITHER OF ABOVE
2 RADIOS PLUS
REAR SEAT SPEAKER
REAR
FRONT
STEREO RADIO
OR ANY
STEREO TAPE PLAYERS REAR
B SERIES
wGNs.
I
c o w .
JOTHERS
- 1 1
in canter of I.P.
*
G
SERIES
X
SERIES
1
PKG.
SHELF
1
TOP
COMPT.
1
PKG.
SHELF
1
WHEEL
HSG.
1
WHEEL
HSG.
1 in canter of I.P.
1
PKG.
SHELF
1
TOP
COMPT.
of I.P.
1 in
Center
2
PKG.
SHELF
1
WHEEL
HSG.
2
WHEEL
HSG.
1
PKG.
SHELF
I . P . 1 i n I . P .
Center
1
PKG.
SHELF
1
TOP
COMPT.
2
TOP
COMPT.
1
PKG.
SHELF
1
PKG.
SHELF
2
PKG.
SHELF
1
PKG.
SHELF