ขายคู่ปรี พาวเวอร์ Pre Sansui TC-505-Power Sansui BA-60 สวยคลาสสิค เสียงดี Made in Japan
ขายคู่ปรี พาวเวอร์ Pre Sansui TC-505 และ Power Sansui BA-60 สวยคลาสสิค เสียงดี หายาก พร้อมใช้งาน Made in Japan
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***Pre Sansui TC-505***
SANSUI TC-505
¥37,500 (released in July 1968)
explanation
Stereo preamp with AM/FM tuner.
The FM front-end of the tuner section adopts FET for the triple variator and RF stage to obtain
high sensitivity and improve the ability to eliminate interference such as cross-modulation
and image rejection.
In addition, the use of AGC circuits improves selectivity in strong electric fields.
The 4-stage IF amplification and 3-stage limiter circuit provide sufficient limiter effect and
facilitate reception even in areas with high noise levels.
The muting and noise canceller switches are a three-stage switching method, allowing you
to enjoy noise-free broadcasting both during station selection and reception.
Muting eliminates inter-station noise and allows for quiet station selection.
Noise cancellers can eliminate the noise when receiving FM broadcasts without cutting the
high audible range of frequencies, abandoning the traditional high-cut method.
The power supply for the FM front-end, FM, and AM parts adopts Zener diode stabilized
power supply.
In particular, the front end safely compensates for the temperature of the local origin, and
by stabilizing the power supply, it has succeeded in removing the AFC circuit by minimizing
the local drift.
It is equipped with a sharp pinpoint tuning circuit.
It is equipped with an FM multicircuit with a separation of 35dB.
Equipped with pure electronic FM stereo and mono switching.
The FM antenna is equipped with two impedance terminals, 300 Ω and 75 Ω. In addition, local/distant switches are attached, so distortion-free reception is possible even in strong
electric field areas.
The AM tuner section has a built-in high-sensitivity ferrite bar antenna.
The preamplifier section consists of an NF amplifier for the entire amplification circuit from
the first stage to the final output stage.
In addition, the equalizer circuit uses a specially selected low-noise silicon transistor for
the equalizer circuit, and the low-frequency part is an all-silicon transistor with a particularly
low signal-to-noise ratio.
The tone control amplifier section is designed with a low-noise silicon transistor and NF-type
tone control to pay attention to noise and distortion characteristics.
It is equipped with a headphone jack and has a dedicated booster independent of the
output circuit, so it can be effectively used as a monitor.
It is equipped with accessory circuits such as high filter, low filter, and loudness c
ontrol.
TC-505 rear panel
Model rating
Preamp with FM/AM tuner
< Tuner Department>
FM: Received Frequency 76MHz～90MHz
sensitivity 2.0μV±3dB(S/N:20dB quieting)
Image ratio 50dB or more
Selectivity 45dB or more
S/N 60dB or more
Harmonic Distortion Less than 0.8%
Spurious Response Rejection 60dB or more
Spurious Radiation 34dB or more
Capture Ratio 3.0dB(IHF)
FM Stereo Separation 35dB
IF Rejection 60dB or more
Local/Distant Switch Local:attenuate 20dB
Distant:Direct
AM: Received Frequency 535kHz～1605kHz
Sensitivity (IHF) 20μV±3dB(1000kHz)
Selectivity 20dB or more (1000kHz)
Image Rejection 40dB or more (1000kHz)
IF Rejection 60dB or higher (1000kHz)
< preamp section>
Output (emitter follower) Rating: 1.5V
Max: 3V
Harmonic Distortion Less than 0.3%
Input Sensitivity/Impedance
(Rated Output) Phono:2.5mV±3dB/50kΩ
AUX:150mV±3dB/100kΩ
Tape Monitor(Pin):200mV±3dB/100kΩ
Tape Monitor(Din):200mV±3dB/100kΩ
Recording output (rated output) Pin:150mV±3dB
Din:30mV±3dB
Hum, noise (rated output) Minimum volume: 80dB or more
Phono: 65dB or more
AUX: 75dB or more
Channel Separation
(Rated Output) Phono: 50dB or more
AUX: 50dB or more
equalizer Phono:RIAA、NF Type
Controls, Switches Bass: ±12dB (50Hz) Treble
: ±10dB (10kHz)
Loudness: 50Hz +8dB, 10kHz +2dB (at volume -30dB)
Low filter: -12dB (30Hz)
High filter: -12dB (15kHz)
Selector switches (1) Phono
(2)FM AUTO
(3)AM
(4)AUX
Mode Switch 1:mono(L+R)
2:Stereo
< General >
configuration 28Tr、20Di、1FET
power AC100V、50Hz/60Hz
Power consumption 10VA
Dimensions Width 382 x Height 111 x Depth 267mm
weight 6.3kg
sold separately special wooden case C-9
SANSUI BA-60
¥19,900 (released in July 1968)
explanation
A compact all-silicon transistor power amplifier developed in pursuit of sound transparency.
In addition to data, repeated listening tests are used to elongate low-frequency sounds and
reduce distortion at low outputs.
The circuit configuration adopts a SEPP OTL-ITL circuit using a silicon transistor to achieve
low distortion due to a large amount of NF.
The protection circuit of the power transistor uses a circuit breaker.
It is equipped with an independent left and right phase switch.
To adjust the left and right balance, it is equipped with an oral/nar balance switch.
When the switch is tested, the left and right speakers are connected in series, and if they
are properly balanced, there will be no sound.
It is equipped with a single volume on the left and right, and each can be adjusted
independently.
It has an input-level adjuster for use with any preamp.
Model rating
Model Stereo Power Amplifier
Effective Output 25W/25W ±1dB(4Ω)
20W/20W ±1dB(8Ω)
Music Power (IHF) 60W ±1dB(4Ω)
50W ±1dB(8Ω)
Harmonic Distortion 0.3% or less (at rated output)
Mixed-modulated distortion rate (60Hz: 7kHz=4:1) Less than 0.3%
Powerband Wisconsin (IHF) 20Hz～40kHz(8Ω)
Frequency response (normal output) 20Hz～60kHz ±1dB(8Ω)
Input Sensitivity (1kHz, Effective Output) 0.7V ±3dB
Input impedance 50kΩ or more
Load impedance 4Ω～16Ω
Damping Factor 46(8Ω)
Hum & Noise (IHF) 80dB or more
Channel Separation 50dB or more
Supply voltage AC100V/117V/220V/240V、50Hz/60Hz
Power consumption 100VA
Dimensions W152 x H111 x D264mm
weight 4.2kg
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