Pioneer SX-616
¥ 64,800 (released in 1972)
Commentary
A fully functional and versatile stereo receiver.
The FM tuner consists of an FM front-end with an FET and four variable capacitor, and an IF with a ceramic filter and IC to improve sensitivity, image ratio, and selectivity.
The AM tuner uses a 3-row varicon and a ceramic filter.
The dial scale is a wide type that covers the entire panel surface, and the FM is a linear scale with regular intervals of 250 kHz, making it easy to read frequencies and to select neighboring stations.
FM muting circuit using FET is adopted, and unpleasant inter-station noise is effectively cut off.
Equipped with Klix/Klukš top tone control and FET in the first stage of control amplifier, input impedance is high and control characteristics with high stability are obtained.
It is equipped with two pairs of tape monitor terminals and two pairs of phono terminals for tape-to-tape duplication.
The speaker outputs have a Route 3 and can be switched to five positions : A, B, C, A + B and A + C.
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Model Rating
| Type | FM/AM stereo receiver | ||||||
| FM Tuner Section | |||||||
| Practical sensitivity (IHF) | 2.0 μ V | ||||||
| Capture Ratio (IHF) | 2.5dB | ||||||
| Effective selectivity (IHF) | 70 dB or more | ||||||
| S/N | 70dB | ||||||
| Image Interference Ratio (82 MHz) | 90 dB or more | ||||||
| IF Interference Ratio (78 MHz) | 100 dB or more | ||||||
| Spurious interference ratio (82 MHz) | 90 dB or more | ||||||
| AM suppression ratio | 50dB | ||||||
| Harmonic distortion factor (100% modulation) | Mono : 0.4% or less Stereo : not more than 0.5% |
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| Stereo Separation (1 kHz) | 40 dB or more | ||||||
| Residual carrier level | 50 dB or more | ||||||
| Antenna | 300 ohm balanced 75 Ω Unbalanced Type |
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| Muting | ON-OFF enabled | ||||||
| <AM Tuner Section> | |||||||
| Practical sensitivity (IHF) | 10 μ V | ||||||
| S/N (30% modulation) | 50 dB or more | ||||||
| Image Interference Ratio (1 MHz) | 80 dB or more | ||||||
| IF interference ratio | 70 dB or more | ||||||
| Antenna | Ferrite bar antenna | ||||||
| Power Amplifier Unit | |||||||
| Music Power (IHF) | 110W (4 Ω) 76W (8 Ω) |
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| 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) | 10 Hz to 70000 Hz | ||||||
| Frequency characteristic | 5 Hz to 80000 Hz ± 1 dB | ||||||
| Input Sensitivity / Impedance (1 kHz at effective output) |
500mV/50k Ω | ||||||
| Load impedance | 4 Ω ~ 16 Ω | ||||||
| Damping factor | 40 or More (8 Ω, 1 kHz) | ||||||
| Preamplifier Section | |||||||
| Output level | Effective output : 500 mv Maximum : 3 v |
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| Harmonic distortion factor | Not more than 0.5% | ||||||
| Frequency characteristic | 15 Hz to 20000 Hz ± 1 dB | ||||||
| Input Sensitivity / Impedance (1 kHz at effective output) |
Phono1, 2 : 2.5mV/45k Ω MIC : 2.2mV/22k Ω AUX : 200mV/100k Ω Tape Mon1, 2 : 200mV/70k Ω |
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| Recorded output | Tape Rec1, 2 (pin jack) : 200 mv DIN connector : 35 mv |
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| Tone control | Bass and Treble | ||||||
| Low Filter | -8dB at 50 Hz, 6dB/oct. | ||||||
| High Filter | -9dB at 10 kHz, 9dB/oct. | ||||||
| Equalizer | RIAA S.T.D | ||||||
| Loudness (at -40dB volume) | 100Hz:+10dB 10kHz:+6dB |
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| Hum and noise (IHF) | Phono : 85 dB or more AUX : 95 dB or more |
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| <General> | |||||||
| Rated power consumption | 70W | ||||||
| Maximum Power Consumption | 170W | ||||||
| External dimensions | Width 450x Height 145x Depth 360 mm | ||||||
| Weight | 9.9kg | ||||||