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2015.10.20 18:46

파이오니어 SA-8800 ii 인티앰프

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전화번호 --
 

 

 

파오이니어 SA-8800ii 인티앰프입니다.

전원 100V

입력단은 포노 1,2 / AUX / TUNER / TAPE 1,2 가능합니다.

독립적인 트랜스 사용한 제품이며 좌우 각각 4개씩 총8구 사각티알이 장착 되어 있습니다.

프리 파워 분리형으로 사용할 수 있으며 스피커 출력 단자는 2조 가능합니다.

실물사진입니다, 왼쪽에 작은 흠집있지만 전체적인 상태 좋습니다.

작동 깨끗합니다.

 

sa-8800II 는 음질 좋기로 유명한 제품입니다.

착불 **만원

011-250-4011

 

 

 

 

The

Pioneer SA-8800II  
59,800yen(1976 release)
 
Description
　
The Integrated Amplifier which pursued high-quality sound-ization, such as adopting 2 power transformers of a right-and-left independency in order to improve a dynamic behavior. 

While having adopted a differential, a three-step hardwired-connection final-stage Class-A operation, pure complimentary SEPP, and positive/negative 2 power source of the first rank as an equalizer part and aiming at a distorted reduction,The modification of a property is aimed at by using the NFB element (±1% of an error, the nichrome vapor-deposition metal film resistor of temperature characteristic±50 part per million/c, styrene capacitor of ±2% of an error) selected carefully.
Moreover, the improvement in an SN ratio was aimed at by selecting carefully and adopting especially a low-noise transistor as the first rank differential amplifier, and 250mV of maximum permissible inputs have been obtained by supplying the voltage of ±25V to a circuitry. 

In order to demonstrate the performance of various cartridges, the circuit changing switch from which four kinds of cartridge load capacity can be chosen is carried. The load capacity which was suitable for the using cartridge by this can be set up. 

The two-step hardwired-connection flat amplifier of a control part chooses the operating point as the linear area of a transistor by making the first rank into a differential amplification, and is aiming at the distorted reduction. Moreover, the tone control has adopted the 3 steps of turnover switching. 
It is adopted as a control knob with the click stop which is easy to use, and also also has the tone on-off switchpoint. 

The attenuator type of 32 steps is adopted as a volume, and there is little gang error between right-and-left channels as less than 0.5dB, and it also serves as indicated value of the panel side with an error of less than ±0.5dB. 
Furthermore, it has a muting lever of -20dB, and more delicate volume control is possible. 

The circuitry of the power amplifier part consists of a 2 steps of ±2 powering and differentials amplification current mirror circuitry, a final-stage parallel push pull, and a pure complimentary OCL circuitry. 
The dual transistor where the property was stabilized is used for the differential-amplification part of the first rank, and it is reducing the eventh harmonic content by considering a pre driver or later as a push pull drive while making the pre-driver stage into a current mirror circuitry, applying sufficient NFB and reducing distortion. 
The good chimney style radiator of the heat-dissipation effect is adopted as a heat dissipation. 

The power-source part had adopted two power transformers and the capacitor of 10,000 micro Fx4, eliminated the cross interferencee between channels in the power-source part, and has improved the channel separation. 

The protection network consists of quick electronic circuitries of a power relay and a response. 
Moreover, the it1 sound at the time of power activation is also eliminated. 

Functionalities, such as a separation termination of a preamplifier and power amplifier, a two-line tapes monitor and a loudness contour, a low cut (subsonic speed), and a high cut-off filter, are carried. 
 
Rear
Internal
 
Rating of a mode
Form Stereo Integrated Amplifier
Circuit system 2 steps of differentials whole page hardwired-connection parallel PP pure complimentary OCL
Effective output 
(Both channel drive, 20Hz - 20kHz)		 75W+75W (4ohm) 
60W+60W (8ohm)
THD (20Hz - 20kHz) 0.05% (at the time of an effective output) 
0.01% (at the time of 30W output 8ohm) 
0.01% (at the time of 1W output 8ohm)
Cross modulation distortion (50Hz:7kHz=4:1) 0.05% (at the time of an effective output) 
0.01% (at the time of 30W output 8ohm) 
0.01% (at the time of 1W output 8ohm)
Output bandwidth (IHF, both channel drive) 5Hz - 45kHz (0.05% of distortion)
Frequency characteristic 5Hz-100kHz+0 -1 dB
Input sensitivity/impedance Power amp in: 1V/50kohm
Output-terminal Speaker A-B: 4ohm-16ohm 
Speaker A+B: 8ohm-16ohm 
Headphone: 4ohms - 16ohms
Dumping factor 30 (20Hz - 20kHz, 8ohm)
S/N 110dB (IHF, A network, a short circuit)
Circuit system Equalizer-amplifier part: 3 steps of first rank differentials hardwired-connection Class-A SEPP 
Tone control part: 2 steps of first rank differentials hardwired-connection flat amplifier, 
3 steps of turnover switching NFB type tone
Input sensitivity/impedance Phono1, 2:2.5mV/50kohm 
Cartridge load capacity: 100pF, 200pF, 300pF, 400pF (Phono1 and 2) 
Tuner, Aux, Tape play1, 2:150mV / 50kohm
Phono maximum permissible input Phono1, 2:250mV (1kHz, 0.05% of THD)
An Output voltage/impedance Tape rec1, 2:150mV 
Pre out: 1V/2kohm, 6V/2kohm (max)
THD (20Hz - 20kHz) 0.02% (1V output) 
0.1% (6V output)
Frequency characteristic Phono: 20Hz-20kHz±0.2dB 
Tuner, Aux, and Tape play:5Hz-50kHz+0 -1 dB
Tone control
Bass: ±10dB (25Hz, 50Hz, 100Hz) 
Turnover frequency: 100Hz, 200Hz, 400Hz
Treble: ±10dB (8kHz, 16kHz, 32kHz) 
Turnover frequency: 2kHz, 4kHz, 8kHz
Filter Low: 15Hz, 6dB / oct 
High: 8kHz, 6dB / oct
Loudness contour 
(Volume -40dB)		 +6dB(100Hz) 
+3dB(10kHz)
Muting -20dB
S/N (IHF, A network) 
Short circuit		 Phono:75dB 
Tuner, Aux, Tape play: 95dB
The semiconductor used Transistor: 47 pieces 
Diode,others: 27 pieces
AC outlet Power-switch interlock: Two lines 
Power-switch un-interlocking.: Two lines
Supply voltage AC100V, 50Hz/60Hz
Power consumption 150W (Electrical Appliance and Material Control Law) 
410W (maxima)
Dimensions Width 420x height 150x depth of 376mm
Weight 13.8kg
 
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