Technics SU-V10X
¥ 128,000 (around 1986)
Commentary
This is an integrated amplifier equipped with high-definition reproduction and growth capability for the full-scale digital assistant era.
The pre-drive stage employs a gain control circuit with a high-performance operational amplifier. This eliminates the adverse effect of the output stage caused by the speaker load that fluctuates during actual driving and suppresses the generation of distortion in the pre-drive stage itself.
By installing a power linear circuit, the linearity of the output stage is improved, and high-quality speaker drive is realized.
The computer drive eliminates transient distortion in the output stage in real time by the microcomputer. Linear feedback reduces range of audibility distortion by constructing an independent feedback circuit that enables infinite amplification in the NFB loop. In addition, switching distortion and crossover distortion are eliminated by a bias circuit independent of the signal system.
Pc for the output stage of the power amplifier is excellent H of total 1.2 kw.FEA large chip size power transistor with linearity is used.
The power transformer winding of the power supply section employs a unique fully aligned winding capable of winding a oxygen-free copper wire 20% thicker than conventional wires at high density, greatly improving regulation. This winding is sealed with special resin in a total of three layers of magnetic shield case, further increasing the S / N ratio in actual use.
In addition, a total of four low-ESR (equivalent series resistance) smoothing electrolytic capacitors with extremely low loss are mounted, and an instantaneous current supply capacity of 300A is obtained.
The output stage and power supply section are integrated into a concentrated power block to eliminate high frequency distortion caused by electromagnetic radiation.
Phono equalizer is MC basic design.
The tone control is equipped with a three stage turnover switching function.
Equipped with video input terminal, composite signal connection is possible.
The front panel also has video / audio input terminals.
.JPG)
.JPG)
Model Rating
| Type | Integrated amplifier |
| Effective output (20 Hz to 20 kHz) | 150W + 150W (6 ohm, 0.005%) |
| Total harmonic distortion factor | 0.002% (Rated Output -3dB, 20 hz to 20 khz) |
| Frequency characteristic | 20 Hz ~ 20 kHz + 0 -0.1 dB 0.5 Hz ~ 170 kHz + 0 -3dB |
| Signal-to-noise ratio | 110dB(IHF-A) |
| Damping factor | 80 (8 Ω) |
| Load impedance | Main or remote : 4 Ω ~ 16 Ω Main and remote : 8 Ω ~ 16 Ω |
| Input Sensitivity / Impedance | Phono MM : 2.5mV/47k Ω Phono MC : 170 μ V/220 Ω Tuner, Aux, Tape : 150mV/18k Ω |
| Phono SN ratio | MM : 90 dB (2.5 mV input) MC : 72 dB (250 μ V Input) |
| Phono frequency characteristics | 20 Hz to 20 kHz, RIAA ± 0.2 dB |
| Tone control | Bass : ± 10 dB (50 Hz) Treble : ± 10 dB (20 kHz) |
| Turnover frequency | Bass : 125 Hz, 250 Hz, 500 Hz Treble : 2 kHz, 4 kHz, 8 kHz |
| Loudness control (VR-30dB) | +9dB(50Hz) |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | 230W |
| External dimensions | Width 430x Height 147x Depth 392 mm |
| Weight | 13kg |