placed so that an imaginary line can be drawn
from the center of the loudspeaker directly to
the ears of most of the listeners. This means the
audience should sit directly in front of the
speaker. When the auditorium is extremely long
and narrow, it may be necessary to distribute
speakers among the audience so that those in the
rear can hear. These loudspeakers should face
toward the rear of the auditorium and their posi-
tion must be determined by trial and error. In
other situations, “play it by ear.” Distribute
your speakers and make a dry run before the
audience arrives; reposition the speakers as
required.
AUDIO TAPE RECORDER
As a Religious Program Specialist, you may
have the responsibility for recording and
reproducing sound. The tape recorder is the
equipment you will be using. This section will
give you sufficient knowledge of the controls of
the tape recorder to enable you to operate the
recorder in both the record and the playback
mode. Also, you will be given information
which will enable you to clean and make minor
repairs to the tape recorder.
Operating Controls
Within the Navy, a number of makes and
models of tape recorders are used. Although the
aim of this discussion is to present tape recorders
in general, one specific model will be used to
illustrate the controls and operation of all tape
recorders. Figure 7-19 illustrates the controls on
a typical tape recorder. The controls on this
model will differ only slightly from controls of
other models of audio recorders.
TONE CONTROL/ON-OFF SWITCH.—
Locate the tone control/on-off switch in figure
7-19. Rotating the tone control a few degrees
clockwise turns the recorder on. This applies
power to the amplifier and the tape transport
motor. Turning this control adjusts the relative
strength of bass, middle, and treble frequencies
of program material. In the midrange or
BALANCED TONE position, the very high and
very low tones are emphasized, and the degree of
emphasis varies with the volume control setting.
287.31(M1)
Figure 7-19.—Audio recorder.
This gives a response which follows closely the
normal hearing pattern of the human ear. In the
BASS position the highs are subdued and the
lows are emphasized. In the TREBLE position
the higher frequencies are emphasized. The
HIGH-FI position produces a response suitable
for use with auxiliary equipment. The tone con-
trol has no effect when a recording is being
made.
When the tone control is turned to the OFF
position, a tab on the knob trips the transport
mechanism, returning it to the STOP position
for storage.
VOLUME CONTROL.—This control
regulates the volume during recording and
playback. It is also effective in regulating the
signal level applied to a separate sound or music
system through the preamp output jack.
FUNCTION KEYS.—Figure 7-19 shows
three keys located in the upper right-hand por-
tion of the front control panel. These keys are
identified as the STOP key, RECORD key, and
PLAY key. Pressing the STOP key cancels
either the PLAY key or the RECORD key,
applies brakes to the spindles, and holds the tape
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