Stereo System - Akai 1730-SS Operator's Manual

3-4-CHANNEL STEREO SYSTEM
@ 4-CHANNEL STEREO
In the continued pursuance of more aesthetical
sound, another stereo revolution has taken
place... A new stereo "break-through" from
2-channel to 4-channel stereo,
This "move-up" to 4-channel stereo is cqually
as great an achievement as the advancement
from monaural to 2-channel stereo. Just as
2-channel stereo sound reproduction meant the
exodus of flat monaural sound, this epoch-
making new system climinates the inability to
pick up and reproduce pure concert hall sound,
New 4-channel stereo uses 4 signal paths or
sound tracks in the program material and in
playback approximates the complexity of the
sound waves which reach the listener's ear when
attending a live concert hall performance,
speakers with 2 additional rear speakers to form
the "2-2 System", The listener is surrounded
by two sets of speakers (left & right front and
Jeft & right rear), This arrangement does not
mean, however, that simply adding vo speakers
to a 2-channel system is all that is necessary for
4-channel playback. At recording time, 4
microphones are used and sound is picked up
from 4 separate places. Four separate recordings
are made using 4 separate channels 'all four
tracks in one direction), This 4-channel stereo
tape feeds into 4 preamplifiers
and + main
amplifiers to activate a 4-speaker system, 'Thus,
at playback time, sounds from separate channels
are emitted from cach speaker, providing the
listener with a feeling that he is listening to
concert hall music
from the best seat in the
auditorium,
1"
areal
here in which you have the feeling of being
exactly in the middle of the live performance.