TRIO KR-4140
¥ 66,800 (around 1970)
Commentary
Mania-standard FM/AM receiver.
It is equipped with sound adjustment functions such as tone control, low filter, high filter, and loudness control.
Equipped with a tape monitor function.
The FM tuner section is equipped with an FM muting mechanism.
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Model Rating
| Type | FM/AM Receiver | ||||
| Amplifier Unit | |||||
| Music Power (IHF) | 80W (4 Ω) 58W (8 Ω) |
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| Effective power |
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| Harmonic distortion factor | 0.8% or Less (Rated Output) 0.2% or less (-3dB at rated output) |
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| Cross modulation distortion factor | 0.5% or Less (Rated Output) 0.2% or less (-3dB at rated output) |
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| Frequency characteristic | Main input : 15 Hz to 50 kHz ± 1.5 dB Aux : 20 Hz to 40 kHz ± 1.5 dB |
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| Output Bandwidth (IHF) | 18 Hz to 30 kHz | ||||
| Damping factor | 50 (8 Ω) | ||||
| Input Sensitivity / Impedance | Phono1, 2 : 2.5mV/50k Ω Mic : 1.8mV/100k Ω Aux, Tape play : 150mV/100k Ω Main in:100mV |
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| Recording and re-output (at rated output) | Pin:150mV Din:30mV |
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| SN ratio (rated input) | Phono1, 2 : 65 dB Mic:58dB Aux, Tape play : 75 dB |
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| Tone control | ± 10 dB (100 Hz) ± 10 dB at 10 kHz |
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| High filter | -10dB(10kHz) | ||||
| Low filter | -7dB(100Hz) | ||||
| Loudness control | +10dB(100Hz) +5dB(10kHz) |
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| FM Tuner Section | |||||
| Antenna impedance | 300 Ω balanced / 75 Ω unbalanced | ||||
| Sensitivity (IHF) | 1.8 μ V | ||||
| S/N | 65 dB or more | ||||
| Distortion Factor (400 Hz, 100% modulation) | Stereo : 0.8% or less Mono : 0.5% or less |
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| Capture Ratio (IHF) | 2.5dB | ||||
| Selectivity (IHF) | 55 dB or more | ||||
| Image ratio | 70 dB or more | ||||
| IF Rejection | 100dB | ||||
| AM suppression | 50 dB or more | ||||
| Harmonic spurious response | 70 dB or more | ||||
| Stereo separation | 35 dB or More (1 kHz) 25 dB or More (10 kHz) |
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| Subcarrier suppression | 40 dB or more | ||||
| Front end | 2 FET, 4 Series Varicon | ||||
| IF Stage | 2 ic, Mechanical Filter | ||||
| <AM Tuner Section> | |||||
| Antenna | Built-in high sensitivity ferrite bar antenna | ||||
| Sensitivity (IHF) | 15 μ V | ||||
| Selectivity (IHF) | 25 dB or more | ||||
| Image ratio | 70 dB or more | ||||
| IF Rejection | 70 dB or more | ||||
| Front end | 3 Series Variable Capacitor | ||||
| <General> | |||||
| Accessory function | Tape monitor Low filter High filter FM muting Loudness control |
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| Semiconductor used | Transistor : 36 FET : 2 IC : 2 Diode : 33 pcs |
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| Pwer | 100 VAC / 117 V, 50Hz/60Hz | ||||
| Power consumption | 120W at maximum output 20W (no signal) |
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| External dimensions | Width 424x Height 141x Depth 314 mm | ||||
| Weight | 9kg | ||||
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