Stereo
Receiver with high-performance tuner and direct-coupled OCL power amplifier.
There is a
wide range of Pioneer stereo receivers to satisfy the needs and demands of
virtually every audio fan. One of the latest, the SX-434, is specifically
designed for those who insist on low distortion but who feel that paying for
power they don't need is wasteful. The SX-434 has more than enough power, yet
is priced to appeal to budget-conscious music lovers. Its FM section provides
an excellent 1,9 µV sensitivity (IHF), a capture ratio of 1,0 dB (IHF)
selectivity of 60 dB (IHF), and superb stereo separation of more than 30 dB
over a 50 to 10,000 Hz range. Advanced electronic circuitry throughout includes
a low-noise FET and a frequency-linear 3-gang variable capacitor in the FM
front end, exclusive IC and phase-linear ceramic filters in the FM IF section
and more. The phono equalizer in the SX-434 is high-fidelity all the way, with
RIAA equalization of less than ±1 dB deviation. The power amplifier circuitry
is the pure complementary direct-coupled OCL type with wide response and power
bandwidth. The SX-434 produces 15 W + 15 W continuous RMS power (both channels
driven at 8 Ω) with harmonic distrotion of less than 0,8% over 40 to 20,000 Hz
bandwidth. This is enough to drive two pairs of stereo speaker systems
individually or simultaneously.
High
-Performance FM Front End
The Pioneer
SX-434 features top-class FM capabilities. The low-noise FET and frequency
linear 3-gang variable capacitor in the FM front end contribute to the
excellent sensitivity of 1,9 µV (IHF). Improved image and spurious rejection
characteristics and a high signal-t-noise ratio in performance.
FM IF
Section with IC and Ceramic Filters
State-of
-the -art. Techniques are also employed in the FM IF amplifier of the SX-434.
phase-linear caermic filters and an advanced IC afford a high selectivity of 60
dB (IHF) and a capture ratio of 1,0 dB (IHF), figures you'd expect from a tuner
or receiver in a higher price category.
FM Muting
Switch
Annoying
inter-station noise can be cancelled during tuning by the handy FM muting
switch.
Exclusive
IC-Equipped AM Section
Maximum
fidelity and noise-free listening can be enjoyed in the AM band with the
IC-equipped AM section of exclusive Pioneer design.
RMS
Continuous Power 15 x 2
The
pure-complementary direct-coupled OCL design of the power amplifier section in
the SX-434 assures wide frequency response wide power bandwidth and
satisfactorily low distrotion. Continuous RMS power over the 40 to 20,000 Hz
frequency bandwidth (measured with both channel driven into 8 ohms loads) is a
stable 15 W + 15 W with less than 0,8% harmonic distortion.
Two-pair
Stereo Speaker Facilities
With its
ample power provisions, the SX-434 drives up to two independent pairs of stereo
speaker systems, one pair at atime or both together. Ideal for powering those
remote speaker.
Precise RIAA
Equalization
The
two-stage direct-coupled NF (Negative Feedback) design of the phono equalizer
in the SX-434 enables audio reproduction of records within ±1 dB deviation from
the RIAA characteristic curve.
Click-Stop
Tone Controls
The bass and
Treble tone controls are the click-stop type for convenience in adjustment.
Other
Features
The control
capabilities of the SX-434 are ideal for the average hi-fi set-up; it handles a
turntable, tape deck, microphone, Aux and has an output jack for stereo
headphone. The provided loudness contour switch enhances frequency response at
low-volume levels.
Specifications
Amplifier
Section
Continuous
Power Output
20 Hz to
20,000 Hz (both channel driven) : 12
watts + 12 watts at 8 Ω
40 Hz to
20,000 Hz (both channel drivem) : 15 watts +15 watts at 8 Ω and 4 Ω
1 kHz (both
channel drivem) : 16 watts +16 watts at
8 Ω; 18 watts +18 watts at 4 Ω
Harmonic
Distortion:
Continuous power output : less than 0,8%
1 W +1 W,
power output: less than 0,1%
Intermodulation
Distortion:
Continuous power output : less than 0,8%
1 W +1 W,
power output: less than 0,1%
Power
Bandwidth (IHF, both channel driven) :
10 Hz to 70,000 Hz (T.H.D. 0,8%)
Output
Speaker: A, B, A + B (4 to 16 ohms)
Headphone
: 4 to 16 ohms
Damping
Factor: more than 25 (1 kHz, 8 0hm)
Residual Hum
and Noise: less than 0,5 mV (8 Ω, pre
& power amplifier)
Input
Sensitivity/Impedance:
Phono : 2,5 mV/50 k Ω
Phono
Overload Level (RMS/P-P) : 100 mV/280 mV
MIC : 10 mV/90 k Ω
AUX : 150 mV/80 k Ω
Tape PB
: 150 mV/80 k Ω
Tape PB (DIN
connector): 150 mV/80 k Ω
Output
Level/Impedance:
Tape REC
: 150 mV
Tape REC
(DIN connector) : 30 mV/80 k Ω
Frequency
Response
Phono (RIAA
equalization) : 30 Hz to 15 kHz ±1 dB
Aux, Tape PB
: 30 Hz to 25 kHz ±1 dB
Tone
Control:
Bass : +9 dB -8 dB at 100 Hz
Treble
: +5 dB -7 dB at 10 kHz
Loudness
Contour : +10 dB at 100 Hz ; +6 dB at 10
kHz
Hum and
Noise (IHF, Short-Circuited A Network):
Phono : more than 70 dB
MIC : more than 65 dB
Tuner, AUX,
Tape PB : more than 90 dB
Fm Tuner
Section
Usable
Sensitivity (IHF): 1,9 µV
Capture
Ratio (IHF): 1,0 dB
Selectivity
(IHF): 60 dB
Signal-to-Noise
Ratio: 70 dB
Image
rejection: 60 dB (98 MHz)
IF
Rejection: 90 dB (98 MHz)
Spurious
Rejection: 75 dB
Am
Suppression: 50 dB
Total
Harmonic Distortion
Mono : less than 0,2 %
Stereo
: less than 0,4 %
Frequency
Response
20 Hz to 15
kHz, +0,2 dB, -2,0 dB
50 Hz to 10
kHz +0,2 dB, -0,5 dB
Stereo
Separation:
More than 40
dB at 1 kHz
More than 30
dB from 50 Hz to 10 kHz
Sub Carrier
Suppression: 40 dB
Antenna
Input: 300 Ω balanced and 75 Ω
unbalanced
Muting: On-Off
AM Tuner
Section
Sensitivty: 300 µV/m (IHF, ferrite antenna); 15 µV (IHF,
ext. Antenna)
Selectivity: 35 dB
Signal-to-Noise
Ratio: 50 dB
Image
Rejection: 40 dB
IF
Rejection: 50 dB
Semiconductors: 27 Transistors; 1 FET; 3 Ics; 13 Diodes
Miscellaneous
Power:
Requirements: 110/ 120/ 130/ 220/ 240 V 50/60 Hz
Consumption: 75 watts / 110 watts
Dimensions
(W x H x D): 430 x 140 x 347 mm
(16-15/16' x 5-1/2' x 13-21/32")
Weight
(net): 8,1 kg (17 lb 14 oz)