TRIO MA-5100
¥ 44,900 (around 1970)
¥ 47,600 (around the early 1970 s)
Commentary
A multi-channel IDS stereo amplifier that combines four power amplifiers and a crossover network into one.
You can build a 3-way multi-amplifier system by adding it to the amplifier you have.
An NF-type 12dB/oct. crossover network is used.
2-way or 3-way configuration can be selected by switching the switch.
With a direct output terminal, the input signal can be taken out as it is.
It has a headphone port.
Model Rating
| Type | Multichannel IDS Stereo Amplifier | ||
| Effective power |
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| Music Power (IHF) |
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| Frequency characteristic | Mid-range amplifier : 20 Hz to 50 kHz ± 1 dB High-pass amplifier : fc ~ 50 kHz ± 1 dB |
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| Output Bandwidth Characteristics (IHF) | Mid Range Amplifier : 25 Hz ~ 40 kHz High-range amplifier : 1/2fc ~ 30 kHz |
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| Total harmonic distortion factor (8 Ω load) | 0.7% (at rated output) 0.09% (at rated output -3dB) |
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| Input Sensitivity / Impedance | 100mV/20k Ω | ||
| Maximum Input Voltage | 3V | ||
| Output voltage of Low terminal | 1 : 1 (input to output) | ||
| Signal-to-noise ratio | 85 dB (for each channel) | ||
| Crossover frequency | Medium and low frequency : 2-point switching type (400 Hz, 800 Hz) High / Middle Range : 2-Point Switching Type (3.5 kHz, 5 kHz) |
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| Dividing slope | 12dB/oct | ||
| Damping factor | Mid Range Amplifier : 32 (8 Ω) High Frequency Amplifier : 24 (8 Ω) |
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| Channel Selector | Full range, Low2ch, High2ch, and 3 ch | ||
| Accessory circuit | Headphone amplifier and terminal Channel Selector Crossover frequency switching Direct output terminal |
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| Semiconductor used | Transistor : 32 Diode : 10 pcs |
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| Power supply voltage | 100 VAC / 117 V, 50Hz/60Hz | ||
| Power consumption | 9W (no signal) 120W at maximum output |
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| External dimensions | Width 408x Height 134x Depth 280 mm | ||
| Weight | 7.5kg |