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전화번호 --

테크닉스 SU-3400 인티앰프입니다.

110V

1973년산 빈티지 대출력 인티앰프입니다.

90W+90W, 8

포노단에 3단 입력 선택할 수 있습니다.

내외장 상태 흠잡을 곳없이 아주 좋습니다.

무엇보다 두툼하면서 부드러운 음색이 들을수록 편안하게 느껴집니다.

작동상태 깨끗합니다.

실물사진이며 이제는 구하기 쉽지 않은 제품입니다,

착불 25만원

안전하게 포장해서 보내드립니다.

011-250-4011

 

Technics SU-3400
59,000yen(around the 1973 time)

Description
 
The Integrated Amplifier developed Technics 50A and based on SU-3600. 

The last stage of power amplifier has adopted the perfect complementary circuit driven while reversing a phase, combining symmetrically the NPN form which operates by + signal, and the PNP transistor which operates by - signal. 
+ At the change of - signal, switching distortion which tended to be seen in the conventional circuitry is canceled for the impossible stream composition into which it is easy to flow through an electric current and which is not. 
Moreover, the distortion is lessened, while having adopted the whole page hardwired-connection OCL circuitry as a power amplifier part and maintaining a dumping factor at a flat. 

In order to make use of the property of a circuitry, the differential amplifier which uses in a pair the low noise PNP transistor to which the property was equal to the first rank is adopted, and moreover, the common-emitter circuitry of the differential amplifier was constituted from a hardwired-connection circuitry which used the constant current circuit, and has acquired high stability. 

The equalizer stage serves as circuitry of the 3 steps of PNP-NPN-PNP hardwired connection, and especially the first rank used the low noise PNP transistor selected carefully, took large gain, and has improved the SN ratio sharply. 

the changing point of a curve of a tone control a bass and each treble it can switch to a two-step and the tone control can rectify a channel on either side separately. 
the object for an elevation for - descent of the special structure with which this tone control combined the resistor and the silver conductor -- are a technics type Dual-unit volume scheme used separately, and while one side is touching the resistor, another side touches a silver conductor -- always -- while is a mechanism in which only the capacitor is inserted. 
Since both of brushes come on a silver conductor at the middle point, a property completely gentle in a flat is acquired. 
Moreover, the distorted property is excellent in the circuitry of a two-step hardwired connection. 

The preset volume is adopted as a volume. 
If the volume is preset on suitable level, the rotation of a knob serves as the mechanism of stopping at the location. 

A two-set interconnection of a tape deck is possible, and a sound recording with two simultaneous sets and dubbing are also possible. 

Three-step switching of the input impedance of a Phono input terminal is possible. 

A direct current flows into a speaker, and the peculiar speaker protection network which detects a direct current is carried so that a voice coil may not be damaged by fire. 
Moreover, by the mistake on usings, such as a connection mistake, the circuit-protection unit for preventing that a transistor etc. is damaged was also arranged, and perfectness is measured. 

The easy connector type speaker termination is adopted. 

Rear
Internal

Rating of a mode
FormSolid-state Integrated Amplifier
Circuit systemPerfect complimentary whole page hardwired-connection OCL circuitry
<Power amplifier part>
Music power (IHF)120W (4ohms) 
90W (8ohms)
Effective output (IHF)42W/42W (4ohms) 
35W/35W (8ohms)
Power Band Width (0.2% of distortion)5Hz - 50kHz-3dB
Frequency characteristic5Hz - 100kHz, and +0 -3 dB
Distortion (at the time of an effective output)0.2% or less
Cross modulation distortion (60Hz:7kHz=4:1)0.2% or less (at the time of an effective output)
S/N ratio (IHF)110dB or more
Dumping factor50 (at the time of an 8-ohm load intensity)
Input sensitivity/impedance1V/50kohm
<Preamplifier part>
Input sensitivity/impedancePhono: 2mV/30, 50, 100kohm 
Tuner: 100mV / 80kohm 
AUX: 100mV / 80kohm
Tapes monitors 1 and 2Rec Out: 100mV / 10kohm 
Playback: 100mV / 60kohm 
Rec/Play(DIN): 100mV / 60kohm, 50mV / 80kohm
An Output voltage/impedanceOutput power: 1V/200 ohm 
Maximum output voltage: 3V
Phono maximum permissible input100mV(1kHz)
Frequency characteristicDeflection of less than ±0.5dB from a Phono:RIAA standard curve 
Tuner: 5Hz - 60kHz, and +0 -3dB 
AUX: 5Hz - 60kHz, and +0 -3dB
Tone controlBass: 50Hz, +16dB--16dB 
Turnover frequency: 150Hz, 500Hz 
Treble: 20kHz, +14--14dB 
Turnover frequency: 2kHz, 6kHz
Loudness control100Hz, +10dB (Volume-30dB)
<Synthesis>
The semiconductor usedTransistor: 32 
Diode: Seven
Power sourceAC100V, 50/60Hz
AC outletSwitched: One line 
Unswitched: One line
Power consumptionAt the time of an Output power: 70W
DimensionsWidth 410x height 140x depth of 300mm
Weight10.2kg

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