VICTOR/JVC AST-140T
¥ 62,200 (around the late 1960 s?)
Commentary
An FM/AM receiver equipped with a slide-type graphic control volume, etc.
The power amplifier section uses a quasi complimentary service ITL and OTL circuit.
The equalizer amplifier is also connected directly to the amplifier, and the noise quality is improved by is improved by removing all the resistors and capacitors between the transformer and amplifier stages from the inlet to the outlet of the amplifier.
NF type is used for tone control.
It also has an SEA controller connection terminal, making it possible to connect SEA devices and develop into a multi-channel amplifier.
The FM tuner uses a switching method in the multiplex section to improve separation.
It is also equipped with a changeover switch and one touch AFC to control the input of radio waves in weak electric field and strong electric field.
Built-in filter of 30 Hz or less and 30 kHz or more.
.JPG)
Model Rating
| Type | Graphic control stereo tri-amp |
| FM Tuner Section | |
| Circuit system | Separately excited oscillation type superheterodyne |
| Receiving frequency | 76 MHz to 90 MHz |
| Sensitivity | 1.8 μ V (IHF) 3.5 μ V (S/N30dB, 30% MOD) |
| Distortion factor | Not more than 1% |
| Image ratio | 50 dB or more |
| Signal-to-noise ratio | 70 dB or More (100% MOD, 100 μ V Input) |
| Frequency characteristic | 20 Hz to 20,000 Hz ± 1 dB |
| Antenna input | 300 Ω Balanced Type |
| <FM MPX Part> | |
| Circuit system | Balanced detection-type switching |
| Separation | 44 dB or more |
| Distortion factor | Not more than 1% |
| Filter | With SCA Filter |
| <AM Tuner Section> | |
| Circuit system | Superheterodyne |
| Receiving frequency | 535 kHz to 1605 kHz |
| Sensitivity | 8 μ V (S/N20dB, 40% MOD) |
| Image ratio | 40 dB or more |
| Antenna | Bar antenna |
| Amplifier Unit | |
| Circuit system | Quasi complimentary service SEPP-OTL system |
| Maximum power output | 54W(27W+27W) |
| Distortion factor | 0.1% or Less (at 12W (single channel)) 0.1% or Less (at 100 mW (one channel)) |
| Input terminal | Phono MAG:1.5mV AUX:75mV |
| S/N ratio (Volume max. Tone control flat, output 13W) |
Phono : 60 dB or more AUX : 72 dB or more |
| Equalizer | NF Type, RIAA |
| Tone circuit | Bass : 100 Hz, ± 12 dB, NF Type Treble : 10 kHz, ± 12 dB, NF |
| Loudness | 100Hz:+9dB 10kHz:+7dB |
| Crosstalk | 45 dB or more |
| Residual noise | 2 mv (Volume Min, Tone Control Flat) |
| <General> | |
| Accessory circuit | Tape monitor Loudness Mode Headphone DIN terminal Pre Out/Main In |
| Semiconductor used | Transistor : 35 Diode : 21 |
| Protection circuit | Overcurrent Protector (With Lamp) |
| Fuse rating | 2.3A |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Power consumption | 100VA 83W |
| External dimensions | Width 483x Height 165x Depth 320 mm |
| Weight | 9.5kg |