Pioneer qa 800 brochure 2
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Page 1
PIONEER
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AN INTRODUCTION TO QUADRAPHONIC SOUND
Audio technologists have long been concerned with the
potential of four-channel sound for the reproduction of an
authentic living presence within the usual confines of
the home music room. Today that sound is a reality, and
the Pioneer QA-800 creates it for your own home. Four-
channel sound technology is Such a rapidly progressing field
for the'reason that no other form of sound reproduction can
so accurately re-create the ambience of the concert hall or
the reality of original sound characteristics. Four-channel
sound is simply the ultimate in home music entertainment.
Remember, as you sit in a concert hall or auditorium, you
are bombarded by sound waves from all conceivable direc-
tions. What you hear is not simply the sound of the musi-
cal instruments that are being played in front of you, but
the sounds which'are reflected from the walls on both sides
or the rear of the hall, as well as the reverberations of your
own applause. The sound you hear, thus, is composed of
both direct and indirect sound waves as they converge
upon your ears.
Conventional two~channe| stereo has had as its main objec-
tive the re-creation- in the best tonal quality possible with
the use of two micrOphones-of the sounds being played
on the stage in front of a concert audience. But four-chan-
nel stereo takes the sound of music a completely new step
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forward-to the re-creation of the entire sound field that
surrounds you while you listen to a concert. With quad~
raphonic sound, loudspeaker systems are placed in front
and in back of you. You are enveloped in sound, you are
able to hear the reproduction of the actual reverberations
and reflected sounds of the concert hall. And the results,
as well you .might imagine, are stunningly effective.
There are today a number of different fOur-channel stereo
sound systems, each with certain key advantages for the
music listener. But the Pioneer QA-800 is capable of pro-
viding each of the different four-channel modes. The QA-
800 can be set by a single switch to provide any of three
different four-channel modes, as well as provide reproduc-
tion of conventional two-channel stereo. It is a self-contain-
ed quadraphOnic music system. The amplifier, four speakers
and your favorite musical source (tape, records, FM) are all
that is required for the new four-channel sound. You do
not need additional amplifiers or synthesizers. Moreover,
the QA-800 may be used as a standard two-channel stereo
amplifier. If at this time your stereo budget prohibits the
move to quadraphonic stereo, you can use the new Pioneer
amplifier with your existing two speakers, then add another
pair of speakers at a later date to achieve the brilliance of
quadraphonic sound.