Audio Database

Image of SF-50
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)
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)
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
3 Channel Low-Mid:600Hz
Mid-High:5kHz
2 Channel Low-High : 600 Hz, 5 kHz (Switching Type)
Cutoff characteristic 12dB/oct. (each channel)
Semiconductor used Transistor : 10
Diode : 1
Power supply voltage 100 VAC, 50Hz/60Hz
Maximum Power Consumption 3VA
External dimensions Width 200x Height 115x Depth 254 mm
Weight 2.1kg