Pioneer SF-50
¥ 10,900 (around 1971)
Commentary
A crossover network that can be easily enjoyed with a budget like an LC network.
An emitter-follower circuit is used for input and output to prevent adverse effects caused by distortion and noise on the connected amplifier.
The slope characteristics of 12dB/oct. and the level control provided for each channel enable control according to the characteristics.
2-way and 3-way use is possible by switching the switch.
Model Rating
Type | Electronic crossover network | ||||
Number of channels | 2 channels (Low-High) 3 channels (Low-Mid-High) |
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Rated output voltage | 2 v (each channel) | ||||
Input impedance | 100k Ω (1 kHz) | ||||
Output impedance | Low : 1.6k Ω or less (70 Hz) Mid : 1.6k Ω or less (1 kHz) High : 200 Ω or less (20 kHz) |
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Load impedance | 15k Ω or More (Each Channel) | ||||
Distortion factor | 0.3% or less (each channel) | ||||
Constant loss | -4dB or less | ||||
S/N | 75dB | ||||
Crossover frequency | 3-channel and 2-channel can be switched with a switch
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Cutoff characteristic | 12dB/oct. (each channel) | ||||
Semiconductor used | Transistor : 10 Diode : 1 |
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Power supply voltage | 100 VAC, 50Hz/60Hz | ||||
Maximum Power Consumption | 3VA | ||||
External dimensions | Width 200x Height 115x Depth 254 mm | ||||
Weight | 2.1kg |