Pioneer QX-801
¥ 97,000 (released in 1972)
Commentary
FM/AM receiver with a 4-channel decoder.
This 4-channel amplifier can play four channels of regular / SQ matrix, four channels of discrete tape, and even CD-4 discs by adding a demodulator.
You can also enjoy Matrix 4 channel playback through FM broadcasting.
The FM tuner uses an FET in the front end and an IC and ceramic filter in the IF section.
The dial has a linear scale and is a 2-meter system with a signal meter and a center tuning meter so that precise tuning points can be caught.
It is also equipped with a muting switch to cut out unpleasant inter-station noise.
Equipped with tone control, you can control the sound quality of front and rear separately.
Equipped with front left and right, rear left and right, front and rear balance control, it can be adjusted according to the structure of the room and listening position.
The preamplifier section and power amplifier section can be used separately.
.JPG)
Model Rating
| Type | 4-channel receiver | ||||||
| FM Tuner Section | |||||||
| Practical sensitivity (IHF) | 2.2 μ V | ||||||
| Capture Ratio (IHF) | 3.0dB | ||||||
| Effective selectivity | 45 dB or more | ||||||
| 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) | 85 dB or more | ||||||
| AM suppression ratio | 50dB | ||||||
| Harmonic distortion factor (100% modulation) | Mono : not more than 0.6% Stereo : 0.8% or less |
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| Stereo separation | 40 dB or More (1 kHz) | ||||||
| Residual carrier level | 35 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) | 15 μ V | ||||||
| Selectivity (1 MHz) | 25 dB or more | ||||||
| S/N (30% modulation) | 50dB | ||||||
| Image Interference Ratio (1 MHz) | 45 dB or more | ||||||
| IF interference ratio | 30 dB or more | ||||||
| Antenna | Ferrite bar antenna | ||||||
| Power Amplifier Unit | |||||||
| Music Power (IHF) | 180W (4 Ω) 130W (8 Ω) |
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| Effective power |
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| Harmonic distortion factor | 1% or Less (Effective Output) 0.05% or Less (8 Ω, 14W + 14W/14W + 14W output) |
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| Cross modulation distortion factor | 1% or Less (Effective Output) 0.1% or Less (8 Ω, 14W + 14W/14W + 14W output) |
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| Output Bandwidth (IHF) | 2-ch drive : 10 Hz to 100,000 Hz 4-ch drive : 15 Hz to 100,000 Hz |
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| Frequency characteristic | 5 Hz to 100,000 Hz ± 3 dB | ||||||
| Input Sensitivity / Impedance | 400mV/70k Ω (1 khz at effective output) | ||||||
| Damping factor | 35 (8 Ω, 1 kHz) | ||||||
| Preamplifier Section | |||||||
| Output voltage | Effective output : 400 mv Maximum : 2.5 V |
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| Harmonic distortion factor | Not more than 0.5% | ||||||
| Frequency characteristic | 10 Hz to 40000 Hz ± 3 dB | ||||||
| Input Sensitivity / Impedance (1 kHz at effective output) |
Phono1, 2 : 2mV/50k Ω MIC : 8mV/120k Ω AUX1, 2 : 170mV/120k Ω Tape Mon1, 2 : 170mV/130k Ω |
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| Recorded output | Tape Rec1, 2 (pin jack) : 170 mv | ||||||
| Tone control | Bass : 100 Hz, -12dB to + 11 dB Treble : 10 kHz, -8.5 dB to + 10.5 dB |
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| Low Filter | -6.5 dB (50 Hz), 6dB/oct. | ||||||
| High Filter | -11.5 dB (10 kHz), 6dB/oct. | ||||||
| Equalizer | RIAA S.T.D | ||||||
| Loudness (at volume -40dB) |
100Hz:+11.5dB 10kHz:+7dB |
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| Hum and noise (IHF) | Phono : 75 dB or more AUX : 90 dB or more |
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| <General> | |||||||
| Rated power consumption | 97W | ||||||
| Maximum Power Consumption | 250W | ||||||
| External dimensions | Width 509x Height 172x Depth 377 mm | ||||||
| Weight | 15.6kg | ||||||