Graetz FANTASIA stereo 302 Reciever TYP 5252 01 01 [serial #763780], 1972-1974, made in Germany

Link:  radiomuseum  | hifi-archiv [Service Manual]

Country: Germany
Manufacturer / Brand: Graetz, Altena (Westfalen)
Year: 1972–1974

Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 21:
Main principle Super-Heterodyne (Super in general); ZF/IF 460/10700 kHz
Tuned circuits 6 AM circuit(s) 9 FM circuit(s)
Wave bands Broadcast, Long Wave, Short Wave plus FM or UHF.
Details
Power type and voltage Alternating Current supply (AC) / 110-127; 220 Volt
Loudspeaker - This model requires external speaker(s).
Power out 3.3 W (unknown quality)
Model: FANTASIA stereo 302 - Graetz, Altena Westfalen
Material Wooden case
Shape Book-shelf unit.
Dimensions (WHD) 490 x 88 x 295 mm / 19.3 x 3.5 x 11.6 inch
Notes

• ICs: 1.
• Stereo-Steuergerät.
• NF-Verstärker mit 2 Endstufen je 3,3 W (Sinus);
• zwei Lautsprecherboxen (300×190×130 mm) gehören zum Lieferumfang.  

Net weight (2.2 lb = 1 kg) 5 kg / 11 lb 0.2 oz (11.013 lb)
Price in first year of sale 498.00 DM
Source of data Handbuch VDRG 1972/1973

Родные колонки имеют размеры: 300×190×130 mm

Внутри колонок широкополосный динамик (овал) с маркировкой 49132 10643 III

Loewe-Opta ST240 Stereo Reciever artikel-nr: 12081, 1968-1970, made in Germany

Link: radiomuseum | radiomuseum | elektrotanya [scheme]

Собран на Siemens AD150 Germanium Transistor

Country: Germany
Manufacturer / Brand: Loewe-(Opta); Deutschland
alternative name Löwe Radio
Year: 1968/1970

Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 26/30:
Main principle Super-Heterodyne (Super in general); ZF/IF 460/1070 kHz
Tuned circuits 7 AM circuit(s) 12 FM circuit(s)
Wave bands Broadcast, (BC) Long Wave (LW), 2 x SW and FM or UHF.
Details
Power type and voltage Alternating Current supply (AC) / 110; 220 Volt
Loudspeaker - This model requires external speaker(s).
Power out
Model: ST240 12081 [30 Trans./26 Trans.] - Loewe-Opta; Deutschland

Material Wooden case
Shape Book-shelf unit.
Dimensions (WHD) 550 x 135 x 250 mm / 21.7 x 5.3 x 9.8 inch
Notes

• HiFi-Stereo-Steuergerät. NF-Verstärker mit 2 Endstufen je 11 W (Sinus). 

Net weight (2.2 lb = 1 kg) 5 kg / 11 lb 0.2 oz (11.013 lb)
External source of data erb
Source of data Handbuch VDRG 1969/1970

Crown D-75A Stereo Power Amplifier, 2000-2014, made in USA

The D-45 and D-75A are perfect for moderate power applications such as recording or broadcast studio near-field monitoring, video suite audio monitoring, a recording/broadcast headphone amp or a small paging system. Designed, built and carefully checked to ensure reliable operation with a wide variety of loads, Crown D Series amplifiers are convection cooled. Their high reliability is particularly important in reducing maintenance costs. 

Link: crownaudio | !!!FULL DESCRIPTION!!! | Reference Manual | Service Manual

Date of manufacture (D-75A): 2000s ~ 2014

The D-75A is a cost-reduced version that came out sometime in the 2000s. 

It should have the same basic performance, but Crown took away the speaker connectors and replaced them with a terminal strip to save itself money. 

Crown also removed the dedicated unbalanced input and instead uses XLR combo jacka for balanced inputs only. The combo jacks will accept XLR or 1/4", but it's a 1/4" TRS balanced input, not the mono 1/4" jack that completely bypassed the balanced input for home Hi-Fi use — which is probably what most of you reading this want. 

The D-75A also has a Mono mode, but you have to open the case to switch it.

Crown offshored the D-75A to China in its last days before it was discontinued in 2014. It's best to avoid the newer D-75A, even if it looks cooler in black.

Yamaha MDF2 Midi Data Filer Sequencer, March 1992, made in Japan

Link: muzines | Manual

JVC Victor XP-A1000 BK Digital Acoustics Processor Super DigiFine, 1988, made in Japan

Link: hifi-classic | groups.google

32Hz-44Hz-48Hz
На чипах 2 х РСМ 56Р- J и JVC VC-4097 (DAP)

The digital acoustic processor is equipped with features such as program data transfer, scaling and the shape of the venue, and the sensation of air.

The method of symmetric 6-point analysis of the sound field, which uses six microphones, actually measured 15 spaces of the sound field around the world and has a computer program of its characteristics.

In addition, a total of 20 types of predefined templates are loaded, including simulation cinema data, and additional predefined programs can be redesigned according to your preferences, and up to 20 templates can be registered.

It has a coordinated left and right independent signal processing system from measuring, analyzing and reproducing the sound field.

For the analog-to-digital converter, which affects the sound quality, a 64-fold digital filter with oversampling is built in and independent left and right dual ADCs are adopted.

With the help of parameters that can be adjusted depending on the reverberation time and the width of the listening room, the natural characteristics can be set even in rooms that are shifted towards the dead and lines, even in narrow rooms.
It is possible to switch to 6 or 4 channels.
Three optical and coaxial digital inputs / outputs are carried.

Digital Acoustic Processor
quantization 16-bit linear 48 kHz
A / D conversion 64x oversampling Left and right independent 2A / D converter
D / A conversion 2D / A converter with 4x oversampling
Type of process Parallel independent process (4/6 h)
Digital Input Light: 1 line,
coaxial: 2 lines
Digital light output: 1 line,
coaxial: 2 lines
Digital Distortion: 0.004%
Analog: 0.005%
Dynamic range 94 dB
External dimensions Width 435 x Height 103 x Length 357 mm
Weight 5.8 kg
Associated Remote Control.
Price in first year of sale ¥ 128 000

S-Tronic Full Range Speaker for Car

Hans G. Hennel Summit Hi-Fi, 1976-1977, made in Germany

Link: summit-analog

Power: 45 Watt / 70 Watt
Transmission range: 35 - 23 000 Hz
Impedance: 4-8 Ohm
Dimensions (WHD): 210 x 360 x 173 mm
Metal mesh front

Made in W. Germany
Woofer: Summit TT160 - 1/4 - 165 mm на тканевом подвесе
Mid-Range: Summit MT100 - 1/4 - 120 mm подвес с вывороткой
Tweeter: Summit HT50 - 1/4 Alnico - 60x60 mm

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