Audio Database

Image of the SX 414
Commentary

FM/AM receiver equipped with microphone mixing function.

The front end of the FM tuner section is equipped with an FET and a 3-row varicon to improve the interference rejection characteristics while improving sensitivity.
In addition, a Longs scale with an effective length of 200 mm is used for the dial scale, and the FM scale is a linear scale with equal spacing, making it easier to select stations.
It is also equipped with a signal meter to enable more accurate tuning.

The amplifier section uses a quasi complimentary service SEPP circuit using all-silicon transistors.

The built-in mixing amplifier allows you to mix using a microphone. The mixed signal is always output to the REC jack and can be recorded on tape.
The program source and microphone can be level-controlled independently, and can also be used as a microphone loudspeaker device if the source volume is fully reduced.
The microphone volume also functions as a slide switch, mixing the source and microphone for recording, and setting it to PULL OFF for simultaneous playback.

Model Rating
FM/AM stereo receiver
FM Tuner Section
Practical sensitivity (IHF) 2.3 μ V
Capture Ratio (IHF) 3.5dB
S/N 65dB
Image Interference Ratio (82 MHz) 55 dB or more
IF Interference Ratio (78 MHz) 80 dB or more
Spurious interference ratio (82 MHz) 70 dB or more
AM suppression ratio 45dB
Harmonic distortion factor (100% modulation) Mono : not more than 0.6%
Stereo : 0.8% or less
Stereo Separation (1 kHz) 40 dB or more
Residual carrier level 35 dB or more
Antenna 300 ohm balanced
75 Ω Unbalanced Type
Muting ON-OFF enabled
<AM Tuner Section>
Practical sensitivity (IHF) 15 μ V
S/N (30% modulation) 50 dB or more
Image Interference Ratio (1 MHz) 45 dB or more
IF interference ratio 35 dB or more
Antenna Ferrite bar antenna
Amplifier Unit
Music Power (IHF) 50W (4 Ω)
37W (8 Ω)
Effective power
Effective output (both channel drive) : 13W + 13W (4 Ω)
12W + 12W (8 Ω)
Effective output (single-ch drive) : 18W/18W (4 Ω)
14W/14W (8 Ω)
Harmonic distortion factor 1% or Less (Effective Output)
Cross modulation distortion factor 1% or Less (Effective Output)
Output Bandwidth (IHF) 20 Hz to 45000 Hz
Frequency characteristic 20 Hz to 70000 Hz ± 3 db
Load impedance 4 Ω ~ 16 Ω
Damping factor 40 or More (8 Ω, 1 kHz)
Input Sensitivity / Impedance (1 kHz at Effective Output) Phono : 3mV/50k Ω
MIC : 4.5mV/50k Ω
AUX, Tape Mon1, 2 : 180mV/100k Ω
Recorded output Tape Rec (pin-jack) : 180 mv
DIN connector : 36 mv
Tone control Bass and Treble
Equalizer RIAA S.T.D
Loudness (at -40dB volume) 100Hz:+9.5dB
10kHz:+5.5dB
Hum and noise (IHF) Phono : 75 dB or more
AUX : 85 dB or more
<General>
Rated power consumption 60W
Maximum Power Consumption 90W
External dimensions Width 431x Height 146x Depth 347 mm
Weight 7.6kg