Audio Database

The

Technics SU-3
24,800yen(October, 1982 release)

Description
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315mm in width, the jacket size Integrated Amplifier which adopted the compact body with a panel height of 43.6mm.

The super base which improves a heavy bass play is carried.
This is using bridge type MFB and it is a scheme which carries out the autmatic detection of the fo (the minimum resonance frequency) of a speaker, and reinforces near [ the ] a point,A bass play of a small speaker can be improved without reinforcing inside loud sound unnaturally as compared with a conventional loudness control and tone control.

When having adopted the original direct connector and connecting with ST-3, SH-E5, RS-5, etc., an easy product line is possible.

By efficient heat-dissipation design, the upper load of a tuner is possible.

The thin OI type power transformer of the low oscillation and low leakage flux which realized the slim body is adopted.

The short protection network of an electronic formula which protects amplifier from short-circuit of a speaker etc. is carried.


Rating of a mode
Form Integrated amplifier
<Tuner, the Aux->SP out overall characteristic>
Effective output (EIAJ) 20W+20W (8ohms)
THD 0.008% (Output-power-3dB, 1kHz)
Frequency characteristic 10Hz - -70kHz three dB
SN ratio (IHF-A) 95dB
Remains noise 0.8mV
Dumping factor 30 (8ohms)
Load impedance main or remote: 8ohms - 16ohms
<Other properties>
Input sensitivity/impedance Phono man month: 2.5mV / 47kohm
Tuner, Aux, Tape:150mV /, 27kohm
Phono SN ratio man month: 73dB (2.5mV input)
Phono frequency characteristic 20Hz - 20kHz, RIAA}0.8dB
Tone control Bass: }10dB (50Hz)
Treble: }10dB (20kHz)
<Synthesis>
Power source AC100V, 50Hz/60Hz
Power consumption 44W
Dimensions Width 315x height 50x depth of 290mm
Weight 3.6kg