Marantz DD-82 Digital Compact Cassette Recorder DAC, 1992, made in Japan

Link: hifiengine | thevintageknob

Type: digital compact cassette deck
Track System: 2-channel stereo
Tape Speed: 4.8 cm/s
Recording Time: 90 minutes
D/A Converter: DAC 7 bitstream, 20 bit, 8 x oversampling
A/D Converter: Sigma Delta bitstream, 18 bit, 64 x oversampling
Sampling Frequency: 48, 44.1, 32kHz
Frequency Response: 10Hz to 22kHz
Signal to Noise Ratio: 101dB
Dynamic Range: 100dB
Channel Separation: 100dB
Total Harmonic Distortion: 0.0035%

Analog inputs: Line In 2.0 V - 2x2RCA – Fixed, Variable; Remote Control-1x1RCA, Analogue Outputs: Line Out - 1x2RCA, Remote Control-1x1RCA
Analogue Outputs: 2.0V (line)
Digital Inputs: coaxial, optical
Digital Outputs: coaxial, optical
Dimensions: 420 x 132 x 344mm
Weight: 8.2kg
Accessories: remote control
Year: 1992


Функции работают – механика - обычная кассета воспроизводится, перематывается, электроника-индикация работает, ЦАП/АЦП работает в режиме монитора.

В качестве ЦАП (DA) применен выдающийся TDA1547 (DAC-7), на котором выпускались только самые дорогие и топовые модели ПКД. 

TS Tele-Sound 3000/3001 (Videoton Hi-Fi Box DC-2002A), 1972-76, made in Germany

а вот и Videoton
даже скошенные углы грилей повторены

Link: radiomuseum | radiomuseum

Клонированные венграми под названием Videoton Hi-Fi Box DC-2002A radiomuseum
Rated power: 70/100 W
Impedance: 4 Ohm
Dimensions (WHD): 485 x 250 x 270 mm
Frequency range: 30 - 25 000 Hz
Weight: 10 kg/ 1 pcs
Скошенные углы грилей

Отмечу высокую чувствительность акустики, хорошую подвижку НЧ, довольно близки по звуку к Saba F 810, 820, 830.

Sony SA-W2500 Active Subwoofer

Link: cnet | elektrotanya

Speaker System Type - subwoofer 
Manufacturer - Sony

Amplification Type - active 
Max (RMS) Output Power - 150 Watt 
Frequency Response - 28 - 200 Hz 
Audio Amplifier - integrated 
Connectivity Technology - wired 

Type - subwoofer 

Power Source - AC power adapter 

Brand - Sony 
Product Line - Sony 
Model - SA-W2500 
Packaged Quantity - 1 

Speaker Type - subwoofer 
Speaker Qty - 1 
Frequency Response - 28 Hz 
Connectivity Technology  - wired 

Speaker Type - subwoofer 
Driver Type - subwoofer driver 
Driver Qty - 1 
Driver Diameter - 10 m 
Driver Diameter (metric) -  254 mm 

Type - audio line-in, speakers input 

Type none 

Manufacturer Sony

KrugoVox (КругоВокс) HandMade children toys Двухголосный круговокс и круговокс на логических ИМС

Link: cxema.my1 [начало] cxema.my1 [продолжение] cxema.my1 [окончание]

Радиолюбитель №12/2010

Двухголосный круговокс и круговокс на логических ИМС. Автор - Алексей Браницкий.
Примеры звучания:
Акустика и круговокс
Круговокс 2-1
Круговокс 2-2
Круговокс на логических ИМС

Philips high Fidelity International ST-4, 1975, made in Netherlands

Link: philips.pytalhost

Kraftvoller Stereo-Klang durch zwei optimal angepaßte HiFi-Kompakt-Boxen.
PHILIPS ST-4 mit Stereo-4-Raumklang" (aus dem PHILIPS Katalog, 1976):
Kleine schwarz-silberne Zweiwege-Boxen auf steckbarem Sockel, die in jedem Regal oder auf jedem Sideboard eine gute Figur mache
Lautsprecherboxen auf spacigen Rundfüßen
Rated power: 20 W
Impedance: 4 Ohm
Dimensions (WHD): 260 x 260 x 900 mm

Tweeter Speaker (Mids & SuperTweeter) Philips AD 2090/T8

Woofer Speaker Philips AD 7066/W4

  • Диффузор - бумага
  • подвес - резина
  • Магнит 90мм
  • Посадочное 135мм
  • Расстояние между центрами крепежных отверстий 155мм
  • Глубина 70мм
  • Fms: ~ 64 HzRe: 7 Ohm
  • Qms: 2.50
  • Qes: 1.54
  • Qts: 0.95

Videoton HiFi Box Balaton d-133-c, 1976, made in Hungary

Link: radiomuseum | ВЧ динамики

Country:  Hungary
Manufacturer / Brand:  Videoton; Székesfehérvár
Brand VTTV
Year: 1976
Category: Loudspeaker, headphone or earphone
Wave bands - without
Power type and voltage No Power needed
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
Power out
Model: HiFi Box Balaton D133A - Videoton; Székesfehérvár
Material Wooden case
Shape Tablemodel, high profile (upright - NOT Cathedral nor decorative).
Mentioned in -- Original prospect or advert

Rated power: 15-20 W
Impedance: 4 Ohm
Dimensions (WHD): 150 x  260 x 150 mm
Frequency range: 50 000 - 20 Hz

Tannoy DC 2000 Vintage Dual-Concentric Speakers, 1989, made in England

Link: audionostalgia audio-heritage hilberink

Description:Recommended amplifier: 10 - 150 Watts
Sensitivity: 92dB
Nominal impedance: 6 Ohms
Frequency response: 44Hz - 25kHz
Crossover frequencies: 400Hz / 2.3Khz
Enclosure: Closed box
Internal volume: 31L
Dimensions:260 x 716 x 253mm (Width x Height x Depth)
Year:1989 - 1991

Bose 1801 Stereo Power Amplifier, 1974, made in USA

hifiengine  elektrotanya | eevblog restoration

Power output: 250 watts per channel into 8Ω (stereo)
Frequency response: 15Hz to 20kHz
Total harmonic distortion: 0.5%
Input sensitivity: 1.5V
Signal to noise ratio: 100dB
Speaker load impedance: 4Ω (minimum)
Dimensions: 7-3/16 x 18 x 18-1/2 inches
Weight: 82lbs

Hitachi HA-6800 Stereo Integrated Amplifier, 1981, made in Japan

Link: hifiengine

Power output: 70 watts per channel into 8Ω (stereo)
Frequency response: 1Hz to 200kHz
Total harmonic distortion: 0.008%
Damping factor: 60
Input sensitivity: 0.15mV (MC), 2.5mV (MM), 150mV (line)
Signal to noise ratio: 73dB (MC), 89dB (MM), 100dB (line)
Output: 150mV (line)
Dimensions: 435 x 145 x 392mm
Weight: 12.5kg
Year: 1981
service manual
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Victor SRP-B20, June 1968, made in Japan

Record player using solid state cartridge
The outer rotor 4 pole condenser motor is adopted as a drive system. 
Double-idler system is adopted. 
Features such as feather touch · lead in, idler · shut off system, auto return, auto cut etc are carried. 
Walnut natural material is adopted as a cabinet.

Country:  Japan
Year: 1968 Category: Sound/Video Recorder and/or Player
Wave bands - without
Details Record Player (not changer)
Power type and voltage Alternating Current supply (AC)
Loudspeaker - For headphones or amp.
Power out
Model: Victor SRP-B20 - JVC - Victor Company of Japan,
Material Wooden case
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 482 x 177 x 389 mm / 19 x 7 x 15.3 inch
Accessory mechanism

  • Auto return
  • Auto cut
  • Feather touch
  • lead in
  • 2-Speed Stereo Turntable, MM System DT-23.
  • Platter 310mm, 1,3kg.
Net weight (2.2 lb = 1 kg) 8.3 kg / 18 lb 4.5 oz (18.282 lb)

<Turntable part>
Turntable - 31 cm aluminum die-cast, 1.3 kg
motor - Outer rotor / condenser motor
Wow flutter0.1% or less
S / N50 dB or more
Drive system - Double Idler System
<Tone arm part>
Tone arm - Dynamic balance type
Inside force canceller - Double Clutch
Adjustment of needle pressure - Spring adjustment
<Cartridge part>
Power generation method - Solid Stateo
utput - 7 mV
Frequency characteristic -15 Hz to 21 kHz
Crosstalk - 26 dB or more
Use needle - 0.7 mil diamond needle (DT - 23)
compliance - 15 × 10 -6 cm / dyne
Stylus pressure - 1.5 g - 3 g

Akai PS-200C Stereo Pre Amplifier, 1979-80, made in Japan

Link: hifiengine elektrotanya [manual, PDF]

Frequency response: 0.8Hz to 100kHz
Total harmonic distortion: 0.005%
Input sensitivity: 0.07mV (MC), 2.5mV (MM), 150mV (line)
Signal to noise ratio: 72dB (MC), 88dB (MM), 106dB (line)
Channel separation: 70dB (line)
Output: 150mV (line), 1.5V (Pre out)
Dimensions: 440 x 90 x 457mm
Weight: 7.5kg

service manual

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