Pioneer SX-300
¥ 33,900 (released in 1973)
Commentary
A stereo receiver that embodies the charm of its components in a simple form.
The front-end of the FM tuner uses carefully selected FETs.
The equalizer amplifier uses a 2-stage direct connection NF type circuit.
Equipped with a loudness contour and a mono-stereo changeover switch.
Two auxiliary power outlets are installed.
Model Rating
Type | FM/AM stereo receiver | ||||
FM Tuner Section | |||||
Practical sensitivity (IHF) | 2.3 μ V | ||||
Capture Ratio (IHF) | 3.5dB | ||||
S/N | 65dB | ||||
Image Interference Ratio (82 MHz) | 55 dB or more | ||||
IF Interference Ratio (78 MHz) | 80 dB or more | ||||
Spurious interference ratio (82 MHz) | 70 dB or more | ||||
AM suppression ratio | 45dB | ||||
Harmonic distortion factor | Mono : not more than 0.6% Stereo : 0.8% or less |
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Stereo separation | 40 dB or more | ||||
Carrier leak suppression ratio | 35dB | ||||
Antenna | 300 ohm balanced 75 Ω Unbalanced Type |
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<AM Tuner Section> | |||||
Practical sensitivity (IHF) | 15 μ V | ||||
S/N | 50dB | ||||
Image interference ratio | 45 dB or more | ||||
IF interference ratio | 35 dB or more | ||||
Antenna | Ferrite bar antenna | ||||
Power Amplifier Unit | |||||
Effective power |
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Harmonic distortion factor | 1% or Less (Effective Output) | ||||
Cross modulation distortion factor | 1% or Less (Effective Output) | ||||
Output Bandwidth (IHF, both channel drives) | 25 Hz to 60 kHz | ||||
Output terminal | Speaker : A, B, C, A + B Headphones : 4 Ω ~ 16 Ω |
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Damping factor (1 kHz, 8 Ω) | 20 or more | ||||
Preamplifier Section | |||||
Input Sensitivity / Impedance | Phono1 : 2.5mV/50k Ω Aux, Tape : 150mV/100k Ω |
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Phono maximum allowable input (rms/p-p) | 130mV/360mV | ||||
Output Level / Impedance | Tape rec:150mV Tape rec (Din) : 30mV/80k Ω |
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Frequency characteristic | Phono (RIAA deviation) : 30 Hz to 15 kHz ± 1 dB | ||||
Tone control | Bass : ± 9 dB (100 Hz) Treble : -11dB to + 8 dB at 10 kHz |
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Loudness contour (at Volume -40dB) | + 10 dB (100 Hz), + 5 dB (10 kHz) | ||||
S/N (IHF, short circuit, A-network) | Phono : 70 dB or more Aux : 80 dB or more |
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<General> | |||||
Power supply voltage | 100 VAC, 50Hz/60Hz | ||||
Power consumption | 36W (rated) 65W (max) |
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External dimensions | Width 441x Height 132x Depth 324 mm | ||||
Weight | 6kg |