Pioneer sx 650 brochure

Page 1

MPIONEER

High-Medium Powered Stereo Receiver with FET FM Front End, PLL MPX,
Precision Phono Equalizer and Plus/Minus Split Power Supply for OCL Power Amplifier.

Trust Pioneer to make your shopping
tor a stereo receiver as easy as one-
two-three. One: First. determine the
amount of power output you need.
Your Pioneer denier can help with
this. ll your listening room is oi
.3verage size. chances are that the
Pioneer SX-BSO will be lust right.
' slivers a continuous power

than 0.3% total harmonic dis-
tortion. Two: Be honest with your-
selt about the kind at preamplifier
control versatility you really need.
The Pioneer sx-eso has click-stop
tone controls with center-detest
positions, a high lllter, tape-to-tape
dubbing and more. But It saves you
money by leaving the hills to more
expensive unite, concentrating in-
steadon real preamp performance-
elrch as Including a superhqulet

phone equalizer with toads HIM
precision and a big 200mV overload
tor wide dynamic range. Three:
Evaluate your AM/FM needs, then
note that the Pioneer sx-sso has
high FM sensitivity and selectivity,
PLL multiplex tor superb stereo
separation, and a special It: tor AM
to more than satisfy your require-
ments. Trust Pioneer to deliver what
you need and then some -one-two-
threeln the lsx-eso.

Page 2

SX-SED

POWER AMPLIFIER UNIT

POWER TRANSFORMER

mouopr x 2
ELECTROLYTIC caucrrons

NEAT SINK

FM FRONT END

VARIABLE CAPACITORS
(FM S-GANG. AM Z-GANG)

PHONO EQUALIZER ACHIEVES
REMARKABLE CONFORMITV TO

RIAA CURVE

The tiny electrical signals received trom
your phone cartridge are amplilied in
the phone equalizer of the Pioneer
SX-650 without the addition ol colora-
tion and without the addition of noise,
so that the resulting signals exhibit a
remarkable :t:0.3dB conformity to the
RIAA standard equalization curve, and
maintain their wide dynamic range. The
equalizers power supply is the plus/
minus type, enabling the circuit to ac-
cept a high input voltage (200mV phono
overload at 1kHz RMS with 0.1% total
harmonic distortion).

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TONE CONTROL CIRCUIT FEATURES
CR DESIGN FOR LOW-NOISE
LOW-DISTORTION PERFORMANCE

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The low~noise, low-distortion opera-
tion of the tone control circuit in the
SX-650 is made possible by its low
noise integrated circuit and CR type
tone circuit. Subtle tonal adjustment,

with the aim of tuning" your listening
room to ideal acoustic requirements. is
made easier with the addition ot 11 click
stops for each the BASS and TREBLE
controls, The center-deleat (olt) position
on each puts the circuit on line so that
a llat frequency response is obtained.

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POWER AMPLIFIER DELIVERS
CONTINUOUS 35 WATTS (HMS) PER
CHANNEL WITH LOW DISTORTION
AND STABLE PERFORMANCE

The tirst-stage direct-coupled OCL dif-
ferential amplifier in the power output
section is supplied from a plus/minus
split power supply to deliver a contin-
uous power output ot 35 watts per
channel, min. RMS at 5 ohms, Irom
20 to 20,000 Hertz, with no more
than 0.3% total harmonic distortion.
Stability is ensured with a dual transistor
in the Iirst stage PNP ditlerential to
maintain zero potential at output termi-
nals. This minimizes distortion, sup-
pressing the voltage fluctuations from
outside temperature changes. etc. Beau-
tiiui. musical high fidelity reproduction
is yours at any volume setting.

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INTEGRATED POWER SUPPLY
PROVIDES MORE THAN AMPLE
POWER RESERVE