TRIO WX-330
¥ 42,700 (around 1964?)
Commentary
FM/AM multi-stereo tri-amplifier capable of receiving FM multi-stereo.
The FM multi-stereo circuit uses the CCM system.
It is also equipped with a monitor circuit to distinguish between stereo and monaural.
An SCA filter is installed to prevent interference with FM broadcasts and reception interference when SCA broadcasts used in the United States begin in Japan.
It is equipped with a tape monitor device and also with a tape head terminal for direct playback.
It is equipped with a loudness control circuit to adjust the sound balance at low volume.
It is equipped with a low filter to remove low-frequency noise such as motor rumbling sound, and a high filter to remove high-frequency noise such as scratch noise of records.
The AM section contains a ferrite bar antenna.
Equipped with FM AFC (Automatic Frequency Stabilizer), FM broadcasting once tuned does not shift the tuning point or distort the sound by the AFC function.
Model Rating
| Type | AM/FM Multi-Stereo Tri-Amplifier | ||
| Tuner Section | |||
| Receiving frequency | FM : 76 to 90 MHz AM : 535 to 1605 kHz |
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| Sensitivity (30% modulation) | FM : 2.5 μ V/84MHz (S/N 20 dB) | ||
| Practical sensitivity (30% modulation) | FM : 5 μ V/84MHz (S/N 30 dB) AM : 6 μ V/1MHz (S/N 10 dB) |
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| 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 | ||
| Signal-to-noise ratio (1 input) | FM : 60 dB or more (100% modulation) AM : 45 dB or more (30% modulation) |
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| FM distortion factor | 1% or Less (400 Hz) | ||
| <FM Multi Section> | |||
| Separation | 35 dB or More (400 Hz) | ||
| Distortion factor | 1% or Less (400 Hz) | ||
| <Audio section> | |||
| Output (1% distortion factor) | Music Power : 28W (14W + 14W) Continuous output : 20W (10W + 10W) |
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| Frequency characteristic | 20 Hz ~ 30 kHz ± 1 dB (Output 500 mW) | ||
| Input sensitivity (1 kHz input required for 9W output) | MAG, Tape HD : 2 mv XTAL:20mV AUX, Tape Play : 120 mv |
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| Tone control | 50 Hz : + / - 10 dB 10 kHz : ± 10 dB |
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| Low filter | 50 Hz, -8dB | ||
| High filter | 10 kHz, -8dB | ||
| Loudness control | 50Hz:+12dB 10kHz:+8dB |
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| Signal-to-noise ratio (maximum volume adjustment Tone control flat, output 9W) |
MAG, Tape HD, XTAL : 55 dB or more AUX, Tape Play : 65 dB or more |
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| Residual noise (at minimum volume adjustment) | 0.5 μ W or less | ||
| <General> | |||
| Accessory circuit | FM AFC FM stereo monitor Loudness control Low filter High filter Tape monitor Equalizer amplifier DC ignition Stereo horn jack 100V-117V power supply voltage switch Read / write socket |
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| Semiconductor used |
Silicon Diode FR1M : 2 pcs |
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| Pwer | 100 VAC / 117 V, 50Hz/60Hz | ||
| Power consumption | 150VA | ||
| External dimensions | Width 450x Height 148x Depth 350 mm | ||
| Weight | 14kg | ||