Pioneer CS-R500 User manual

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Congratulations !
You are now the proud owner of a Pioneer R-series speaker
system, To make full use of its astounding potentials and
to avoid errors in its placement, connection and operation,
please study the following instructions carefully.
ABOUT THE PIONEER R.SERIES
With the new R-series, Pioneer introduces a new
concept in speaker system design: the individualistic
speaker. Even at the first glance, these speakers look
different, with their two-part front grilles and
powerful-looking, massive enclosures. But connect
a pair of Pioneer R-series speakers to a good stereo
amplifier, play a pro$am of rock, jazz or folk music,
and you'll realize that these speakers are different.
We've designed them with the emphasis on impact
and richness rather than on laboratory data.
That's what makes Pioneer R-series speakers so
ideally suited for modern music while also lending a
new feel to the classical repertoire.
THE SOUND OF ..LIGHT POWER"
Compared with conventional designs, Pioneer R-
series speakers sound somewhat brighter and at the
same time richer. This effect was achieved by a care-
fully selected and tested combination of numerous
factors: selection of special material for the woofer
cone, balancing of the different speaker units, selec-
tion of crossover network constants, adoption of the
bass reflex principle in the enclosure - without,
however, causing that notorious "boominess" of
bass reflex constructions.
CAREFULLY BALANCED BASS REFLEX
DESIGN
In a bass reflex system (in which the sound waves
from the rear side of the woofer are reflected, re-
versed in phase and radiated to the front through a
special port), careful selection and balancing of the
speaker units and of numerous other design para-
meters is extraordinarily important. In the Pioneer
R-series, a partition of sound absorbing material is
provided in the enclosure, preventing mutual inter-
ference of the speaker units and avoiding "standing
waves." This and the careful dimensioning of the
port lends these speaker systems their crisp bass re-
sponse. What seemed to be impossible has been
realized: speaker sound that is momentous without
being boomy, modern without being untrue to the
original.

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.)
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IMPEDANCE
COMPENSATING
CIRCUIT
O
-(^
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@lmpedance curve for speaker alone.
@lmpedance curve with copper cap at
magnetic path Pole.
@lmpedance curve with compensating
circuit added.
Fig. 1 Fi9.2
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SPEAKER
2

TJIONEEfiI
INSTALLATIONS
CONNECTION TO AMPLIFIER
Connect the input terminals on the rear panel to the
speaker terminals of the amplifier (or receiver). Be
sure to connect speaker O to amplifier @ , speak-
er O to amplifier Q . Wrong connection makes
the speakers of a stereo system operate "out of
phase," with a resulting loss in bass response and
stereo effect. See Figs. 3 and 4.
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@3@@:r@@*rO OB
OR AMPLIFIER
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TAPE DECK
(D Push the button of the
termrnal to make a hole
@ Insert the lead wire
into the hole.
ADJUSTMENT OF LEVEL CONTROLS
The CS-R500 is equipped with continuous level
controls for the MID and HIGH sound ranges. To
adjust these, first set the tone controls on the ampli-
fier to their center ("flat") positions and turn high
and low noise filters off. Then play a familiar tape
or record and adjust the two level controls on the
speakers so that you obtain the most pleasing sound.
Rotation toward MIN decreases response in the
particular sound range, rotation toward MAX in-
creases it. See Fig. 5.
LEVEL CONTRO
Y*^, e
MIN MAX
MID HIGH
Fig.5
IM PORTANT
o The input impedance of this speaker system is
8fl. It can be connected to any amplifier or
receiver with a specified load impedance between
4 and 16sl.
Fig' 3 o Polish the enclosure with furniture wax about
once every three or four months. This will main-
tain its beautiful finish for many years.
o In removing the Saran panel, pull outward while
keeping the panel parallel with the baffle. Pro-
ceed slowly. Do not puil the Pioneer emblem
attached to the Saran board.
IFig. 4
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SPECIFICATIONS
Enclosure
Syste m
Speaker
Woofer
M id Range
Tweete r
Frequency Range
I nput I mpedance
Sensitivity
Max. lnput Power
Crossover Frequencies:
Bass-reflex type
3-way 3-speaker system
25cm (10in.) cone type
12cm ( 5 in.) cone type
Horn type
35Hz to 20,O00H2
8f)
91dB/W at lm distance
60w
Lows - Mid range 650H2
Exrernar Dimensions T;iiii)t: u,iiti,'" r.rt'Sit#
13-2sl32lw\ x 2a(Hl x 12-1132(D\ in.
Weight 18.5 kg / 40 tb 13oz
NOTE: Specifications and the design subject to possible
modification without notice due to improvements.
DIRECTIONAL FREQUENCY RESPONSE
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60 1 00 200 500 1 000 2 000
FREQUENCY IN Hz
CHARACTERISTICS OF IMPEDANCE
1 00 200 500 1 .000 2.000
FREQUENCY IN Hz
5 000 10.000
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PIGINEEFI ELECTFIG'NIC COFIPGIFIATIG,N
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