SONY TA-4300F
¥ 55,000 (around 1970)
Commentary
A dividing preamplifier designed to multi-channel TA 3200 f, TA 1120 f, TA 3060 and other amplifiers.
We use a large number of low-noise, low-distortion FETs for HiFi audio, which we have developed Shinkai.
By using this FET in the signal path, distortion and noise are suppressed less than conventional channel dividers.
The crossover frequencies are 150, 250, 400, 600, 800 and 1000 Hz in the low-to-middle range, and 1.5, 2.5, 3.5, 4.5, 6 and 8 kHz in the mid-to-middle range.
Cutoff characteristic is 18dB/oct.
The low-end mid-range remains the same, but only the low-range channel can change the cut-off frequency to four levels. This allows you to fine-tune the sound connection between the particularly important low-range and mid-range speakers.
This shift is independent of the position of the crossover frequency.
It is equipped with a low-range compensation knob to boost the low-range.
The compensation characteristics are 0, 3, 6, 12, and 18 dB at 20 Hz, and the turnover frequency has been set to 150 Hz and 12dB/oct.
Center channel output terminal for 3D is mounted.
By combining the separately sold adapter TAD-43F, 4-way multi-amplifier configuration can be supported.
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Model Rating
| Type | 3-channel dividing preamplifier |
| Circuit system | NF type filter |
| Passband gain | 0 to -1dB |
| Crossover frequency | Low : 150, 250, 400, 600, 800, 1 kHz High : 1.5k, 2.5k, 3.5k, 4.5k, 6k, 8 kHz |
| Input impedance | 90k Ω |
| Output impedance | 5k Ω or less (maximum at position between level under a control) |
| Distortion factor | Pass band 1 V output : 0.03% 4 v output : 0.1 per cent Crossover frequency 1 v output : 0.05 per cent 2.5 V output : 0.1% |
| S/N | 85 dB (1 v input, closed circuit) |
| Maximum input level | 4.5 V (Distortion Factor 0.1%) |
| Frequency characteristic | 10 Hz ~ 100 kHz + 0 -1db |
| Semiconductor used | Transistor : 40 (including 24 FETs) Diode : 3 (including 1 Zener diode) |
| Power outlet | 300W (Power Switch Interlock, Non-interlock, One System Each) |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | 5W (including TAD-43F) |
| External dimensions | Width 200x Height 149x Depth 316 mm |
| Weight | 3.8kg |
| Attachment | Connection code RK-74x3 Connection code nameplate x3 Polishing cloth |
| Sold Separately | 4-Channel Adapter TAD-43F (¥ 25,000) |
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