TRIO WX-320
¥ 39,900 (around 1965)
Commentary
Automatic AM-FM multi-stereo tri-amplifier developed for stereo.
The output is 6BM3P. P., with consideration given to power consumption, external heat generation, economy and durability.
Equipped with FM mono - stereo broadcast transmission automatic switching device, it is automatically switched to stereo broadcast transmission reception.
In addition, an FM stereo display lamp is installed so that it can be checked at the time of FM stereo broadcast transmission.
It is equipped with a newly developed MPX noise filter.
Conventional filters cut high frequencies, but a newly developed method cuts only noise without compromising sound quality.
DC ignition is used for the equalizer amplifier to eliminate hum noise.
You can record while listening to stereo.
Input impedance is also taken into consideration so that no matter what type of tape recorder is connected, the sound quality will not be affected.
Also, when receiving and recording FM stereo, measures are taken to prevent interference beat interference.
An SCA filter is built in to prevent interference from SCA broadcasts.
It is equipped with functions such as headphone jack, loudness control and FM AFC (FM Automatic Frequency Stabilizer).
Model Rating
| Type | Automatic AM-FM Multi-Stereo Tri-Amplifier | ||||
| Amplifier Unit | |||||
| Output | Music power : 24W (12W + 12W, 1% distortion 9 | ||||
| Frequency characteristic | 20 Hz ~ 25 kHz ± 1 dB (AUX → Output Terminal) | ||||
| Gain | MAG:2.0mV Ceramic:20mV AUX:400mV |
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| Tone control | 50 Hz : + / - 10 dB 10 kHz : ± 11 dB |
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| Loudness control (Volume -30dB) | 100 Hz : + 10 dB, 10 kHz : + 8 dB | ||||
| Signal-to-noise ratio (maximum volume Tone Control Flat, Output 8W/8W) |
MAG : 55 dB or more AUX : 65 dB or more |
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| Residual noise (volume adjusted minimum) | 3 mv or less | ||||
| Tuner Section | |||||
| Receiving frequency | FM : 76 MHz to 90 MHz AM:535kHz:1605kHz |
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| Sensitivity | FM : 2.5 μ V/84MHz (30% modulation, S/N 20 dB) AM : 6.0 μ V/1MHz (30% modulation, S/N 10 dB) |
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| Practical sensitivity | FM : 5.0 μ V/84MHz (30% modulation, S/N 30 dB) | ||||
| Image ratio | FM : 30 dB or more AM : 40 dB or more |
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| FM frequency characteristics | 20 Hz to 20 kHz ± 1 dB or less | ||||
| Signal-to-noise ratio | FM : 60 dB or more (100% modulation, 100 μ V input) AM : 45 dB or more (30% modulation, 1 mV input) |
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| FM distortion | Not more than 1% | ||||
| <FM Multi Section> | |||||
| Separation | 35 dB or More (400 Hz) | ||||
| Distortion factor | Not more than 1% | ||||
| MPX Noise Filter | New method to cut only noise | ||||
| Carrier leak | -50dB or less (100% modulation) | ||||
| <General> | |||||
| Accessory circuit | FM mono-stereo automatic switching device New type noise filter FM AFC Loudness control Tape simultaneous recording terminal Stereo headphone jack Equalizer DC ignition FM stereo display lamp SCA Filters |
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| Semiconductor used |
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| Power supply voltage | 100 VAC / 117 V, 50Hz/60Hz | ||||
| Power consumption | 120VA | ||||
| External dimensions | Width 440x Height 147x Depth 311 mm | ||||
| Weight | 12.0kg | ||||