SANSUI TU-X1
¥ 135,000 (Released in November 1979)
Commentary
An FM/AM tuner that has completely separated the FM and AM divisions to emphasize sound quality.
FM front-end using high-precision 7 series varicon and dual gate FET
Newly developed triple base Darlington differential IC is adopted in the FM part, and two stage switching of WIDE-NARROW is possible.
AM synchronous detection improves interference rejection capability and achieves Hi-Fi reception.
AM beat canceler without interference
※ In the photo, the baking sheet is removed.
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Model Rating
| Type | FM/AM Tuner |
| <FM Part> | |
| Practical sensitivity (IHF) | MONO : 8.7 dBf (old IHF 1.5 μ V) STEREO:14.5dBf |
| 50 dB quieting sensitivity (IHF) | MONO:12.5dBf STEREO:34dBf |
| Signal-to-noise ratio | MONO : 86 dB or higher STEREO : 83 dB or higher Hum & Noise (65 dBf) : 80 dB or more |
| Frequency characteristic | MONO : 20 Hz to 15 kHz (+ 0.2 dB, -0.5 dB) STEREO : 20 Hz to 15 kHz (+ 0.2 dB, -0.5 dB) |
| Distortion Factor (IHF, 50 dB quieting) | MONO 100 Hz : 0.7% or less 1 kHz : 0.7% or less 6 kHz : 1% or less STEREO 100 Hz : 0.7% or less 1 kHz : 0.7% or less 6 kHz : 1% or less |
| Distortion Factor (IFF65dBf) | MONO 100 Hz : 0.03% or less 1 kHz : 0.02% or less 6 kHz : 0.04% or less STEREO 100 Hz : 0.04% or less 1 kHz : 0.03% or less 6 kHz : 0.05% or less |
| Capsule Ratio (WIDE) | 0.9 dB or less |
| Selectivity (IHF, 400 kHz) | 55 dB or higher (WIDE) 80 dB or more (NARROW) |
| Spurious response ratio (IHF) | 130 dB or More (83 MHz) |
| Image Response Ratio (IHF) | 130 dB or More (83 MHz) |
| IF Response Ratio (IHF) | Balanced : 130 dB or more (83 MHz) Unbalanced : 130 dB or more (83 MHz) |
| RF Intermodulation (IHF) | 70dB(83MHz) |
| AM suppression ratio (IHF) | 65 dB or More (83 MHz) |
| Stereo separation | 100 Hz : 45 dB or more 1 kHz : 50 dB or more 10 kHz : 40 dB or more |
| Subcarrier component ratio | 70 dB or More (Fixed Output) |
| Output Voltage / Impedance | Fixed output : 200 mV Variable Output : 0 ~ 1.5 V (2.5k Ω) |
| <AM Department> | |
| Practical sensitivity (IHF, bar antenna) | 50dB/m (NARROW, 1 MHz) |
| Selectivity (± 9 kHz) | -3dB or more |
| 2-signal selectivity (± 9 kHz) | -35dB or more (NARROW) |
| Signal-to-noise ratio (input 100dB/m) | 65 dB or more |
| Frequency characteristic | 40 Hz to 7 kHz (+ 0 dB, -3dB) |
| Distortion factor | 30% modulation, 90dB/m : 0.2% or less 80% modulation, 90dB/m : 0.25% or less |
| Beat Canceller (8 MHz) | -40dB |
| Image Response Ratio (IHF) | 70 dB or More (1000 kHz) |
| Muting action level | 50dB/m |
| IF Response Ratio (IHF) | 70 dB or More (1000 kHz) |
| AM output level | 600 mV or more (30% modulation) |
| <General> | |
| Power consumption | 25W (Electrical Appliance and Material Control Law) |
| External dimensions | Width 480x Height 197x Depth 450 mm |
| Weight | 16.2kg |