Fera / RFT (Fernseh-Radio) Tuner 50 [Comix T430], 1976, made in Germany


Link: radiomuseum | Comix T430

Country: Germany
Manufacturer / Brand: Fernseh-Radio Berlin (FERA), PGH; (Ostd)
Year: 1976
Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 14:
schematic requested
Main principle Superheterodyne (common); ZF/IF 455/10700 kHz
Tuned circuits 7 AM circuit(s) 14 FM circuit(s)
Wave bands Broadcast, Long Wave, Short Wave plus FM or UHF.
Details
Power type and voltage Alternating Current supply (AC) / 220 Volt
Loudspeaker - For headphones or amp.
Power out
Model: HiFi Tuner 50 - Fernseh-Radio Berlin FERA, PGH
Material Wooden case
Shape Book-shelf unit.
Dimensions (WHD) 430 x 95 x 250 mm / 16.9 x 3.7 x 9.8 inch
Notes
  • Wurde einzeln verkauft und in Kombination mit dem Verstärker Stereo-HiFi50.
  • Diesen gab es auch als empfohlene Kombination mit dem Plattenpieler HiFi-Sonate (ehem. Kurt Ehrlich, Pirna).
  • Siehe auch die Exportversion Comix T430.
Price in first year of sale 620.00 Mark
Mentioned in Sortimentskatalog Elektroakustik (DDR, 1976)



Fera / RFT (Fernseh-Radio) Stereo HiFi 50, 1972-1974, made in Germany

The amplifier 50 HiFi Quadro effect of PGH TV-Radio Berlin is the successor of the famous HiFi 50. He is the first hi-DDR-home amplifier having the connection for two additional speakers to pseudoquadrofonen playback. This process should not be a substitute for real quadraphony, but is intended as an improvement of the stereo reproduction that significantly improve the three-dimensional sound image despite the low technological effort. The electrical and mechanical properties would otherwise remain virtually unchanged compared to the HiFi 50, so the description largely done with the text. ifatwww.et.uni-magdeburg


The amplifier has on the rear side of the tape 5 inputs, phono, tuner, micro and specialty, the latter is mainly intended for the connection of electronic musical instruments that can be selected via a push-button set. The signals of the five inputs, which have a total of 3 different sensitivities are input, coupled to the base of the three-stage input amplifier via various passive RC networks. This is equipped with low noise Miniplast transistors, thermally very stable and due to strong negative feedback relatively insensitive to transistor manufacturing tolerances. An equalizer amplifier for magnetic sensing systems for the phono input is not provided in HiFi Quadro 50 effect.

The preamplifier is in two stages and also equipped with low-noise transistors. It allows dual potentiometer on the control for bass, treble, balance and volume, the latter is affected aurally. A rumble filter and the Mono button is still available, the existing the old model noise filter has been replaced by the contour button, which should provide at low volume for a more brilliant sound.

The power amplifier, a four-stage electrically coupled network is set up discretely, fully equipped with silicon transistors and operates as a quasi-complementary output stage in Darlington circuit. It is powered by unbalanced supply voltage and thus requires Auskoppelelkos. In a speaker protection circuit, and a delay was waived. Only an overdrive protection circuitry has been provided which abtennen briefly about each one relay the speakers at excessive level peaks.

The HiFi 50 provides connections for 2 speakers and a stereo headphone, said the non-switchable socket is located on the rear panel. He also has a red lamp as network control, and red clip indicators for both channels, in addition a green stereo display is now available.

The optical design of the HiFi 50 is simple and technically in a modern, slim case made of wood. The front panel is made of black painted aluminum and is labeled with a white screen printing in German. The round keys are made of black plastic with chrome cap, the knobs are made of chromed plastic.

Another variant has a two-part front with black frame and silver aluminum front panel. The keys are square and made of black plastic, as well as the knobs.

The HiFi 50 Quadro effect was presented at the Leipzig Autumn Fair 1974, the first time the public.

Данный экземпляр НЕ Quadro.


Усилитель был взят за основу для построения Fera V150 в 1982 году. radiomuseum | rft-hifigeraete

Оконечный усилитель собран на: 4 x Tesla KU607. 

Доукомплектовывался стерео-тюнером этой серии Fera HiFi Tuner 50 



DUX MD Cassette Recorder 9116A [Philips N2400 Stereo Cassette Recorder ] , 1971-1976, made in Switzerland


Link: radiomuseum | radiomuseum

Country: Switzerland
Manufacturer / Brand: Biennophone; (Marke)
alternative name Sport AG Biel || Velectra AG
Year: 1971-1976
Category: Sound/Video Recorder and/or Player
Semiconductors (the count is only for transistors) Semiconductors present.
Main principle Audio-Amplification
Wave bands - without
Details Cassette-Recorder or -Player
Power type and voltage Alternating Current supply (AC) / 220 Volt
Loudspeaker - This model requires external speaker(s).
Power out 2 W (undistorted)
Model: Cassette Recorder MD 9116 - Biennophone; Marke
Material Modern plastics (no Bakelite or Catalin)
Shape Tablemodel, low profile (big size).
Dimensions (WHD) 360 x 215 x 55 mm / 14.2 x 8.5 x 2.2 inch
Net weight (2.2 lb = 1 kg) 3.250 kg / 7 lb 2.5 oz (7.159 lb)


B&O Bang & Olufsen Beovox HT S45-2 type 6312, 1978-1982, made in Denmark



Manufactured: 1978 - 1982
Designer: Jacob Jensen
Colours: Rosewood, Teak

An exceptional little bookshelf speaker of hi-fi quality with a frequency range of 38 - 20000 Hz and less than 1% harmonic distortion.


You will find these speakers regularly recommended on BeoWorld. They have the same height and width as the lesser S35 speakers but are 3cm deeper and 1kg heavier. This small size difference makes an immense difference to the sound though. The extra filler drive unit adds hugely to the all important midrange sound and this is, to many users' ears, the best balanced bookshelf speaker made by B&O. What it lacks in ultimate bass, it repays in accuracy and tone. The optional floor stand is elegant and effective and worth hunting out. A capacitor change may be needed to make an old pair sing but you are very unlikely to be disappointed by purchasing a pair of these.


For those in search of more bass, S75s are the bigger brother but lack the sonic purity found in the S45.2. To beat these in this range, you need M100s and a bigger house!


Linear phase sound reproduction. Speaker units include a 20cm woofer, a special 8cm Phase Link unit, and a 2,5cm dome tweeter. Volume 25 litres; weight 7kg.


Link: beoworld | Resoration Crossover | radiomuseum | Catalogue


Optional accessory

adjustable aluminium pedestal
Price in 1978: £174.00

Specifications

Type: 6312 (to Nov 1982)
Continuous load: 56 W
Music load: 75 W
Impedance: 4 - 8 ohms
Frequency response +4 -8 dB 38 - 20,000 Hz
Sensitivity: 5W
Gross volume|: 25 litres
Woofer: 20cm
Phase link unit 8cm
Tweeter: 2,5cm
Dimensions W x H x D: 26 x 48 x 21cm
Weight 7 kg




B&O Bang & Olufsen Beovox HT S45-2 type 6312, 1978-1982, made in Denmark



Manufactured: 1978 - 1982
Designer: Jacob Jensen
Colours: Rosewood, Teak

An exceptional little bookshelf speaker of hi-fi quality with a frequency range of 38 - 20000 Hz and less than 1% harmonic distortion.

You will find these speakers regularly recommended on BeoWorld. They have the same height and width as the lesser S35 speakers but are 3cm deeper and 1kg heavier. This small size difference makes an immense difference to the sound though. The extra filler drive unit adds hugely to the all important midrange sound and this is, to many users' ears, the best balanced bookshelf speaker made by B&O. What it lacks in ultimate bass, it repays in accuracy and tone. The optional floor stand is elegant and effective and worth hunting out. A capacitor change may be needed to make an old pair sing but you are very unlikely to be disappointed by purchasing a pair of these.

For those in search of more bass, S75s are the bigger brother but lack the sonic purity found in the S45.2. To beat these in this range, you need M100s and a bigger house!

Linear phase sound reproduction. Speaker units include a 20cm woofer, a special 8cm Phase Link unit, and a 2,5cm dome tweeter. Volume 25 litres; weight 7kg.

Optional accessory
adjustable aluminium pedestal
Price in 1978: £174.00

Specifications
Type: 6312 (to Nov 1982)
Continuous load: 56 W
Music load: 75 W
Impedance: 4 - 8 ohms
Frequency response +4 -8 dB 38 - 20,000 Hz
Sensitivity: 5W
Gross volume|: 25 litres
Woofer: 20cm
Phase link unit 8cm
Tweeter: 2,5cm
Dimensions W x H x D: 26 x 48 x 21cm
Weight 7 kg



Soundcraft GB8 24


Link: Owner's Manual | soundcraft

Технические характеристики:
Тип: микшерный пульт
Серия: GB8
Выход записи с лимитером.
Количество каналов: 24 (24 моно + 4 стерео (фактически 32))
Количество полнофункциональных стереоканалов: 4
Количество шин: 19
Фантомное питание: есть
Количество AUX-посылов: 8
Количество подгрупп: 8
Количество стереовозвратов: 4
Количество MUTE-групп: 4
Выходная матрица: 11 х 4
Индикация: LED-индикаторы на каждом канале
Тип микрофонных предусилителей: GB30
Шум, измеренный RMS (полоса пропускания 22-22 000 Гц): -128 дБу
Уровень шума на выходной группе: меньше 83 дБу
Шум на AUX-группе: меньше 80 дБу
Перекрестные помехи на MUTE-выходного сигнала (1 кГц, типичная): меньше -97 дБ
Завал фейдера входного канала: меньше -95 дБ
Изоляция панорамирования: меньше -77 дБ
Изоляция маршрутизации группы и входа: меньше -97 дБ
Мощность сигнала на наушниках: 2 по 250 мВт
Импеданс выходов Mix, Direct, AUX, Group, Matrix: 150 Ом
Импеданс микрофонных входов: 2кОм
Импеданс линейных входов и стереовозвратов: 10 кОм
Импеданс наушников, рекомендуемый: от 200 до 600 Ом
Размеры: 159 мм х 1208 мм х 656 мм
Вес: 30 кг