Pioneer MXA-3
¥ 10,700 (around the mid 1960 s?)
Commentary
FM multi-stereo adapter developed for FM tuners that cannot receive stereo signals.
It supports low-output ratio detection tuners and high-output Foster Celie detection tuners.
Switching system is adopted for the circuit system.
It is equipped with a stereo indicator, and the indicator lights during the stereo broadcast transmission.
Equipped with a noise filter to suppress noise.
Stereo / mono switching can be operated on the adapter side.
A control knob for adjusting the separation and indicator is mounted on the back of the adapter.
The input voltage is fixed for 100 v, but it can be switched to 110 v.
Model Rating
| Type | Switching system FM multi-stereo adapter |
| Circuit system | Switching type stereo demodulation system |
| Channel separation | 35dB (1kHz) |
| Distortion Factor (1 kHz) | Not more than 1% |
| Operation input level | 0.5 V ~ 10 V (peak to peak) |
| Frequency characteristic | 50 Hz to 15 kHz ± 2 dB |
| Accessory circuit | Stereo indicator Noise filter Mode switch |
| Vacuum tube used | 6AQ8 : 1 Piece 6AN8 : 1 Piece OA81 : 4 SM-150a : 1 |
| Power supply voltage | AC100V/117V |
| Power consumption | 8W(9VA) |
| External dimensions | Width 124x Height 135x Depth 326 mm |
| Weight | 3kg |