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Old 26th May 2010, 02:29 PM   #31
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Default Sansui's first Solid State Receiver TR-707A (TR707A)

approximately six years later than Pioneer's SX-1000TW first SS Receiver follows Sansui's first solid state model TR-707A with the output power devices 2SC2261 from Sanken and output/driver transformers.

Who can post the schematic?
Attached Images
File Type: jpg Sansui TR-707A front.jpg (190.7 KB, 482 views)
File Type: jpg Sansui TR-707A front-II.jpg (281.4 KB, 451 views)
File Type: jpg Sansui TR707A rear.jpg (313.0 KB, 425 views)
File Type: jpg Sansui TR-707A rear II.jpg (144.0 KB, 397 views)
File Type: jpg Sansui TR-707A rear open.jpg (178.7 KB, 408 views)
File Type: jpg Sansui TR-707A open top view.jpg (462.5 KB, 82 views)
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Old 26th May 2010, 06:20 PM   #32
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Default Loewe Opta Receiver LO-40 and Siemens Receiver "Klangmeister 50" (RS-50)

Both Receivers are mixed tube and transistor (solid state) instead "all transistor"
The "LO40" and the Siemens RS50 uses tubes in the UKW-FM front end and the FM-IF/demodulator amplifier stages.
http://www.radiomuseum.org/r/loewe_o...ergerae_4.html
http://www.radiomuseum.org/r/siemens...50_rs50_1.html

The power amp sections from both receivers uses quasi complementary OTL stages equipped with 4xAD150
German explicit description are to find in the "Funkschau" magazine 4/1965 page 85/86 (Book-version from 1965: 241/242) and 2/1965, page 33-36 (Book-version from 1965: 97-100)
Loudspeakers for the Loewe receiver and high resolution pics you will
find about the ebay item No 150423377149
Attached Images
File Type: gif Loewe Opta LO-40 schema ONLY POWER AMP.gif (31.4 KB, 151 views)
File Type: jpg Loewe Opta. LO-40.JPG (33.8 KB, 124 views)
Attached Files
File Type: pdf Loewe Opta loudspeaker for Receiver LO40.pdf (164.9 KB, 42 views)
File Type: pdf Siemens Klangmeister 50.pdf (143.0 KB, 61 views)

Last edited by tiefbassuebertr; 26th May 2010 at 06:34 PM.
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Old 26th May 2010, 06:51 PM   #33
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Default Saba Stereo Studio II (T11 T 11 TII T-II)

Very fine sounded receiver after performed service.
Each amp uses OTL-free dc coupled output stage equipped with 2xAD152. For the phase shifting a driver transformer is in use
Here an URL:
Hi-Fi-Studio II-Stereo (2-Stereo) Radio SABA; Villingen
In the German magazine "Funkschau" (Franzis/Weka) about follow editions you will find explicit papers about this receiver:
1) the whole receiver: 9/1965, page 239-242 and
2) only the here used power amp modul with measure results: 16/1965, page 434-435
If you order copies from the related book from 1965, go to the pages 699-702 and 1229-1231

Last edited by tiefbassuebertr; 26th May 2010 at 07:00 PM.
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Old 26th May 2010, 10:31 PM   #34
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Default Melodija 108A Stereo equipped with KT808A from V / O ЭЛЕКТРОНОРГТЕХНИКА

here a compact stereo system with integrated record player from Russia:
Attached Images
File Type: jpg melodia106 top.jpg (304.4 KB, 47 views)
File Type: jpg melodia106 top view rear open.jpg (332.4 KB, 41 views)
File Type: jpg melodia106 top view PCB.jpg (393.1 KB, 41 views)
File Type: jpg melodia106 top view open.jpg (285.6 KB, 36 views)
File Type: jpg melodia106 record player bottom open.jpg (358.5 KB, 33 views)
File Type: jpg melodia106 rear.jpg (113.4 KB, 19 views)
File Type: jpg Melodia106 4x KT808A.jpg (191.0 KB, 52 views)
File Type: jpg melodia106 AM-RF-IF.jpg (325.7 KB, 53 views)
File Type: jpg melodia106 EX PCB.jpg (382.1 KB, 24 views)
File Type: jpg melodia106 pick up cartridge.jpg (148.5 KB, 30 views)

Last edited by tiefbassuebertr; 26th May 2010 at 10:36 PM.
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Old 26th May 2010, 10:49 PM   #35
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Default Amstrong 521 Integrated Amp equipped with OC26 or AL103

I don't find schematics. Here some URLs:
The Armstrong 500 Series - page 2
HI-Fi (sroll down to OC26-AL103)
The Armstrong 500 Series - page 3
AUDIOKLASSIKS | HIFI VINTAGE OF THE 60's & 70's
Audio Vintage Le forum - Afficher le sujet - ARMSTRONG 521
Attached Images
File Type: jpg Amstrong 521 front.jpg (409.4 KB, 29 views)
File Type: jpeg Amstrong 521 rear.jpeg (28.6 KB, 17 views)
File Type: jpeg Amstrong 521 top+botton.jpeg (43.6 KB, 22 views)
File Type: jpg Armstrong 521 rear.jpg (476.2 KB, 22 views)
File Type: jpg Armstrong 521 top.jpg (523.1 KB, 43 views)
File Type: jpg armstrong_521_523_09.jpg (128.6 KB, 46 views)
File Type: jpg al102_and_oc28.jpg (10.6 KB, 29 views)

Last edited by tiefbassuebertr; 26th May 2010 at 10:51 PM.
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Old 26th May 2010, 11:10 PM   #36
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Default Heathkit AA-22 (AA-22E) Stereo Amplifier equipped with 2N2147

The AA22E and A22 uses OTL output but transformer for driving and phase shifting for the lower half. Exact description and schematic you will find about the German magazine "Funkschau", edition 18/1965, page 499-502 (1465-1468) and the follow URLs:
AA-22E (AA22E) Radio Heathkit (Brand)
Heathkit Educational Systems
Heathkit Circuits
Heathkit Manuals from Vintage Manuals, Inc.
Heathkit Schematic Diagram Archive
HEATHKIT intergrated Amp model AA-22 - AVForums.com
Needs help about information of HEATHKIT intergrated Amp model AA-22 - AudioKarma.org Home Audio Stereo Discussion Forums
Radio Attic's Archives - Heathkit AA-22
Ramblings of a Long Retired Hi-Fi Retailer (stevesstuffproject)
Attached Images
File Type: jpg Head-KIT AA-22.jpg (187.7 KB, 54 views)
File Type: jpg Heathkit AA22-05.jpg (105.0 KB, 45 views)
File Type: jpg Heathkit AA22-rear.jpg (140.6 KB, 19 views)
File Type: jpg Heatkit aa-14 schema_2.jpg (242.3 KB, 139 views)
File Type: jpg 2N2147.jpg (8.6 KB, 137 views)

Last edited by tiefbassuebertr; 26th May 2010 at 11:17 PM.
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Old 26th May 2010, 11:24 PM   #37
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Default Sinclair X10, Z12, TR750, IC10 (IC-10) and 6001

Sinclair's first solid state power amplifier:
Ramblings of a Long Retired Hi-Fi Retailer (stevesstuffproject)
Planet Sinclair: Audio: Amplifiers
Planet Sinclair: Sinclair: Chronology, 1960s
Amplificador HiFi 20w rms +-20v con transistores - Página 7 - Foros de Electrónica
Amplificador HiFi 20w rms +-20v con transistores - Página 7 - Foros de Electrónica
Planet Sinclair: Audio

Which type was the TO-3 power devices from Z-12 ??
Attached Images
File Type: jpg sinclair 6001schema.jpg (125.6 KB, 91 views)
File Type: jpg Sinclair ic-10_ad_2.jpg (234.0 KB, 85 views)
File Type: jpg Sinclair tr750_ad.jpg (177.6 KB, 41 views)
File Type: jpg Sinclair x10 package.jpg (81.4 KB, 34 views)
File Type: jpg Sinclair X10 schem.jpg (72.4 KB, 49 views)
File Type: jpg Sinclair X-10 .jpg (266.4 KB, 42 views)
File Type: jpg Sinclair z12_.jpg (14.0 KB, 36 views)
File Type: jpg Sinclair z12_ad.jpg (246.7 KB, 36 views)
File Type: jpg Sinclair z12_annotated.jpg (75.7 KB, 41 views)
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Old 26th May 2010, 11:38 PM   #38
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Default Grundig SV-80M/SV-80 Integrated Amp Supplement post #16

In the output stage of later versions are the 2N2148 or the AD166 in the transformer less output stage for higher reliability
here a additional URL:
http://drm-berlin.de/ausstellung-rad...e-3-10700.html
Exact documentation and schematic you will find on page 111-115 about the German magazine "Funkschau" number 4 from the year 1965
Attached Images
File Type: jpg siemens_ad166.jpg (4.8 KB, 596 views)

Last edited by tiefbassuebertr; 26th May 2010 at 11:48 PM.
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Old 26th May 2010, 11:47 PM   #39
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Default Grundig SV40 and SV50 Integrated Amplifier

The SV-40M (launched 1965) is equipped with AD166 and the SV-50 (first German's All-Transistor integrated amp launched 1963) equipped with OTL power stage AD-131, driving by transformer for phase shifting.
hifimuseum.de - Sie sind im Bereich : Grundig SV40M

The "SV 50" was tested in the German's Magazine "Funkschau" number 4/1965, page 95-98 include schematic diagram
Attached Images
File Type: jpg grundig- SV-50 front.jpg (71.4 KB, 49 views)
File Type: jpg grundig- SV-50 rear.jpg (67.3 KB, 20 views)
File Type: jpg Grundig-SV40M front.JPG (31.5 KB, 18 views)
File Type: jpg Grundig-SV40M-innen-9749-kuehlrippen.JPG (53.8 KB, 25 views)
File Type: jpg Grundig-SV40M-innen-9752-small.jpg (77.3 KB, 22 views)
File Type: jpg Grundig-SV40M-innen-9758-small.jpg (100.4 KB, 24 views)
File Type: jpg Grundig-SV40M-innen-9779-AD166.JPG (45.2 KB, 21 views)
File Type: jpg ad131.jpg (5.2 KB, 15 views)

Last edited by tiefbassuebertr; 27th May 2010 at 12:04 AM.
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Old 27th May 2010, 12:12 AM   #40
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Default Arena F210 "F 210" Integrated Amp

Review | Arena F210 amplifier and F211 VHF/FM tuner. Prices: L34 13s. and £32 1 Is. (plus £7 7s. for stereo decoder). Manufactured by Hede Nielsen Fabriker, Denmark. UK distributor, Highgate Acoustics, 184-188 Great Portland Street, London WI. | Pa.
Attached Images
File Type: jpg Arena F210 datasheet.jpg (56.3 KB, 47 views)
File Type: jpg Arena F210 front and speakers.jpg (36.2 KB, 40 views)
File Type: jpg Arena F210 rear and 2N2148 heatsink.jpg (31.3 KB, 50 views)
File Type: jpg Arena F210 inside top view.JPG (75.1 KB, 63 views)
File Type: jpg Arena F-210 speaker inside.JPG (36.7 KB, 48 views)
File Type: jpg Arena F210 Front right.JPG (25.8 KB, 32 views)

Last edited by tiefbassuebertr; 27th May 2010 at 12:17 AM.
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