Pioneer SX-434
¥ 50,000 (released in 1973)
Commentary
A high-cost performance receiver with improved performance by incorporating the latest technologies of the time into the tuner and pre-main amplifier.
The EQ amplifier is a 2-stage direct connection type with accurate RIAA deviation, and the power amplifier section is a pure complimentary service OCL system directly connected to all stages.
The tuner section has a circuit configuration that uses a low-noise FET and a 3-series varicon for the FM front end and a high-integration IC and ceramic filter for the IF section.
In addition, an FM muting switch is cut off unpleasant inter-station noise during FM channel selection.
The dial scale is wide type, and the FM scale is linear (equal interval) scale.
A microphone mixing circuit allows you to sing along with program sources for records, tapes, FM and AM broadcasts.
The mixed signal can be recorded to tape or used as a microphone amplifier if the volume of the program source is minimized.
There are two sets of speaker jacks (A and B), and you can use them in four positions (A, B, A + B and OFF) by changing the switch.
Model Rating
Type | FM/AM stereo receiver | ||||||
FM Tuner Section | |||||||
Practical sensitivity (IHF) | 1.9 μ V | ||||||
Capture Ratio (IHF) | 1.5dB | ||||||
Effective selectivity (IHF) | 60dB | ||||||
S/N | 70dB | ||||||
Image Interference Ratio (82 MHz) | 60 dB or more | ||||||
IF Interference Ratio (82 MHz) | 90 dB or more | ||||||
Spurious interference ratio | 75 dB or more | ||||||
AM suppression ratio | 50dB | ||||||
Harmonic distortion factor | Mono : not more than 0.2% Stereo : not more than 0.4% |
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Frequency characteristic | 20 Hz to 15 kHz, + 0.2 -2.0 dB 50 Hz to 10 kHz, + 0.2 -0.5 dB |
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Stereo separation | 1 kHz : 40 dB or more 50 Hz to 10 kHz : 30 dB or more |
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Carrier leak suppression ratio | 40dB | ||||||
Antenna | 300 ohm balanced 75 Ω Unbalanced Type |
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Muting | ON-OFF | ||||||
<AM Tuner Section> | |||||||
Practical sensitivity (IHF) | 15 μ V | ||||||
Selectivity | 35 dB or more | ||||||
S/N | 50 dB or more | ||||||
Image interference ratio | 40 dB or more | ||||||
IF interference ratio | 50 dB or more | ||||||
Antenna | Ferrite bar antenna | ||||||
Amplifier Unit | |||||||
Circuit system | Pure complimentary service OCL | ||||||
Effective power |
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Harmonic distortion factor | Effective power : 0.8% or less 0.1% or less at 1W output |
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Cross modulation distortion factor | Effective power : 0.8% or less 0.1% or less at 1W output |
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Output Bandwidth (IHF, both channel drives) | 10 Hz ~ 70000 Hz (Distortion Factor 0.8%) | ||||||
Damping factor (1 kHz, 8 Ω) | 25 or more | ||||||
Residual noise (8 Ω, pre + power amplifier) | 0.5 mV or less | ||||||
Input Sensitivity / Impedance | Phono : 2.5mV/50k Ω Phono maximum allowable input (rms/p-p) : 100mV/280mV MIC : 10mV/60k Ω AUX : 150mV/80k Ω TapePB : 150mV/80k Ω TapePB (DIN connector) : 150mV/80k Ω |
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Output Level / Impedance | Tape Rec:150mV Tape Rec (DIN Terminal) : 30mV/80k Ω Speaker : A, B, A + B (4 Ω ~ 16 Ω) HeadPhone : 4-16 Ω |
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Frequency characteristic | Phono (RIAA deviation) : 30 Hz to 15000 Hz, ± 1 dB MIC, AUX, Tape PB : 30 Hz to 25000 Hz, ± 1 dB |
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Tone control | Bass : + 9 dB, -8dB (100 Hz) Treble : + 5 db, -7dB (10 khz) |
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Loudness contour | +10dB(100Hz) + 5 db (at 10 khz, volume -40dB) |
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S/N (IHF short circuit, A network) |
Phono : 70 dB or more MIC : 70 dB or more AUX, Tape PB : 90 dB or more |
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<General> | |||||||
Power supply voltage | 100 VAC, 50Hz/60Hz | ||||||
Rated power consumption | 60W | ||||||
Maximum Power Consumption | 110W | ||||||
Power outlet | Power switch interlock 1, non-interlock 2 | ||||||
External dimensions | Width 430x Height 140x Depth 347 mm | ||||||
Weight | 8.1kg |