Pioneer CS-R500 Panduan Pengoperasian - Halaman 3
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Halaman Cetak
FEATURES
25 cm
Cone-type Woofer
Use
of
newly
developed FB cone paper improves frequency
response
and
gives
the
woofer
its excellent
transient
charac-
teristics. The
cone surface
is
especially coated over
to
avoid
partial
vibrations, thereby resulting
in
vastly
improving
transient characteristics and
tonal qualify.
The woofer
edge
is
made
of
soft
polyurethane
foam
which
prevents
distortions due
to
edge
resonances
and
improves
stability
under
various temperature
and
humidity
condi-
t
ion
s.
To
permit
high power
input
and
to
avoid
distortions
caused
by
transient
bass
impulses,
a long-throw voice
coil
and
an
aluminu m sheet
bobbin
are
used.
A
large 12cm
ferrite
magnet
with
a pure
copper cap
on
its
center pole
suppresses
harmonic distortions,
however
little,
in
the
middle
range.
'12
cm
Cone-type Mid-range
Speaker
The
mid-range
speaker,
too,
employs
a
cone
made
of
special
FB
paper
with its
extra
strong
magnet,
its
newly
adopted
center
cap
combined
with
rigid duralumin
and damper,
and
its
hermetically
sealed
back chamber. Therefore, this
speak-
er
lends
itself
to
superb
reproduction
of
the all-important
mid
sound range
with
excellent
response and
freedom
from
d
istortions.
Horn
Tweeter
The
diaphragm is
made
of
a
special polyester-type
synthetic
resin
with
excellent
stability
against changes
in temperature
and
humidity,
and
is vapor-coated
with
aluminum.
Togeth-
er with
the
aluminum diecast
horn, this
construction
ex-
plains the
very
flat
frequency
response
up
to
an
ultra-high
range
and
the wide
sound
dispersion angle.
The
high
and
very
high sound
range has
impact
and
presence
from
any
listening
position.
Network
Design provides
for
optimum
speaker system
frequency
response.
Stringent component
selection
and
use
of
a
com-
pensating
circuit
designed
to
limit
woofer and mid
range
impedances
guarantee ideal
transmission characteristics
a-
round the
crossover
point,
as
well
as
good
transient
charac-
teristics. (Refer
to
Figs.
1
and
2.)
i----l
f
I
IMPEDANCE
COMPENSATING
CIRCUIT
O
-(^
@
@lmpedance
curve for
speaker
alone.
@lmpedance
curve
with
copper cap
at
magnetic path
Pole.
@lmpedance
curve
with
compensating
circuit
added.
Fig.
1
Fi9.2
UI
o
z
o
r!
0_
SPEAKER
2