Overview of Brands and Models from first Solid State Audio Amplifier Components want

Metz Receiver "HiFi 465" equipped with 4xAD166

"Metz - always first class" - that was in the sixties the German advertisement slogan for all Metz products.
go also to ebay item No 190385510719 for additional pics
 

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Supplement to post #5 and #6 - SE401-SE402

The SE-400 and the SE-408 are here wrong, because there are true complementary power device in use; go to post #89 about
http://www.diyaudio.com/forums/soli...st-complementary-ab-bipolar-amplifiers-9.html
The SE 401 and SE402 (that is the same device than SE401, but factory installed) uses Germanium power devices without type number on the mounted TO-3's. Also no schematics are to find
???????? McIntosh/JBL/audio-technica/Jeff Rowland/Accuphase/?/?¾?????
DETAILS AND CREDITS
http://members.verizon.net/mpioso/alljbllist.txt
Who have the schematics and remember to the germanium types of the power devices?
 

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Also from other Device from the same Mode no Type Number to read on the Power Devices

Another Exemplar of JBL's SE-401 equipped with power devices without type number from ebay Item number: 270575368146
 

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Vox Solid State "Super Beatle V1141" Series from mid 1965 - supplement to post #15

The Vox "Super Beatle V1141" instrumential Amp was equipped with 2N2292C (2N2292) Germanium Power Devices from Solidev Ltd. Perhaps this transistors produce the so called "beatles"-sound.
more informations and schema:
The VOX Showroom | North Coast Music: Reproduction Vintage VOX Catalogs
VOX V1141 SUPER BEATLE (c.1967) (130U-7090) - Elderly Instruments (V1141)
Ebay Item number:190398362335
Thomas Vox Solid State Amps
 

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Vox first SS Amp T60 ("T 60) equipped with Mullard's OC28

Any info about the designer? Maybe Tom Jennings or Dick Denney? First Edition lauched either end 1963 or begin 1964 (see schematic). The power output devices, Mullard's OC28 certainly have a very good reputation. Inside photos I don't find. Perhaps one of you can try contact the seller from the ebay auction Item No 190398362335
VOX | Vintage Circuit Diagrams
VOX T-60 BASS - ???????? - Yahoo!??? (Vox T60 Beatels)
Vox T-60 Bass
The VOX Showroom - Vox T60 Bass Combo Amplifier
The VOX Showroom | North Coast Music: Reproduction Vintage VOX Catalogs
Thomas Vox Solid State Amps
vox super beatle schem
Solid-state guitar amplifier history -thread
 

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Luxman SQ-707 first Silicon SS Amp equipped with Sanken 2SD92 (SEPP)

At rear side I read the model "SQ-707" and on the front panel "707" and "707E". It must be the first silicon solid state amp from Luxman. It could be, that there are an earlier all transistor model from Luxman, but then equipped with germanium power devices.
 

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Hagström GA-85 Model 1700 Power devices outline like #27

First launched 1963 or 1964. First solid state amplifier from scandinavian. The first solid state amplifiers in general are not to find by home audio and public address power amps but by instrumental amplifiers - so I think - 1957 worlds first solid state version from Cervin Vega - also here mentioned.
Here now some pics and URLs to the Hagström GA-85, also schematic:
IMGP9247 on Flickr - Photo Sharing!
Gibbs Manufacturing Reverb unit
Hagstrom Amps - Original Swedish Amplifiers
Välkommen till JAM - Butiken som alltid har öppet!
sopplier for power vintage devices:
Componenti al Germanio
 

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Hagström GA-85 Model 1700 cont.

Hagström GA-85 Model 1700 more pics
 

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Rosetti Triumph Amplification - schematics and pics wanted

Equipped with four Goodmans 12''
no tubes and no germanium power devices in the output;
the Rosetti TriumpH RC100L RC70L RC70B 100 Watt Lead Amplifier - unfortunately no informations
(I want schemas and inside photos) but very nice description:

Silicon puts the POW in Triumph

Valves gets hot and pack up. Germanium Transistors stay cool but pack no punch. Silicon Solid State devices sustain the power, cut the sizzle, take the punishment, hour after sound packed hour, week after succesful week. That's why Triumph choose silicon, then add printed circuit and deliberately over specify components. So that the player can play, without fear of that maddening failure, with full power right through the frequencies, with absolute clarity and superlative tone throughout the full volume range. What's more, matching is simple. Speakers of any impedance can be used with Triumph, without distortion. Saftey is the last Word. Triumpf is proofed against short circuit and over stress. Proofed against the normal risks of transport and movement. Triumpf is the last word in every way.


Guitar effect on 'Gimme Shelter'?
http://dam.10.forumer.com/a/mid-60s-triumph-silicon-100_post488-30.html
 

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First Publications concerning Transistors in Audio Applications

...from Paul Penfield, Jr.,Professor of Electrical Engineering Emeritus
1. Jay J. Jacobson, Leigh Miller, and Paul Penfield Jr., "Comments for the consideration of the Federal Communications Commission, Docket No. 9288"; July 21, 1954 (unpublished).
2. Paul Penfield, Jr., "A Transistor Remote Amplifier," Audio, vol. 38, no. 9, pp. 26-27; September, 1954.

3. Paul Penfield, Jr., "A Modern Photoelectric Galvanometer d.c. Amplifier," B.A. Thesis, Amherst College, Amherst, Massachusetts; May, 1955.
4. Paul Penfield, Jr., "Transistorized Headlight Dimmer," Radio & Television News, vol. 54, no. 2, pp. 56-57, 122; August, 1955.

5. "Transistor Action," Audio, vol. 40, no. 10, pp. 15-16, 19-22, 80; October, 1956.
6. Paul Penfield, Jr., "Transistors in Audio Circuits. I: Transistor Action," Audiocraft, vol. 1, no. 12, pp. 18-21, 42-43; October, 1956.
7. Paul Penfield, Jr., "Confused . . . about Transistor Types? Part I," Radio-Electronics, vol. 27, no. 10, pp. 104-106; October, 1956.
8. Paul Penfield, Jr., "Confused . . . about Transistor Types? Part II," Radio-Electronics, vol. 27, no. 11, pp. 78-80; November, 1956.
9. Paul Penfield, Jr., "Transistors in Audio Circuits. II: Miscellaneous Transistor Types," Audiocraft, vol. 1, no. 13, pp. 22-23, 36-37; November, 1956.
10. Paul Penfield, Jr., "Transistors in Audio Circuits. IIIa: Junction Transistor Characteristics," Audiocraft, vol. 1, no. 14, pp. 26-27, 32-33; December, 1956.
11. Paul Penfield, Jr., "Transistors in Audio Circuits. IIIb: Junction Transistor Characteristics," Audiocraft, vol. 2, no. 1, pp. 19-21, 40; January, 1957.
12. Paul Penfield, Jr., "Symbol Controversy," letter, Radio-Electronics, vol. 28, no. 1, p. 22; January, 1957.
13. Paul Penfield, Jr., "Wiring Mistakes," in Audio Aids column, Audiocraft, vol. 2, no. 2, p. 31; February, 1957.
14. Paul Penfield, Jr., "Transistors in Audio Circuits. IVa: Biasing the Transistor," Audiocraft, vol. 2, no. 2, pp. 28-29, 42; February, 1957.
15. Paul Penfield, Jr., "Circuit Reliability," Radio & Television News, vol. 57, no. 3, pp. 114-117; March, 1957.
16. Paul Penfield, Jr., "Hum Detection," in Audio Aids column, Audiocraft, vol. 2, no. 3, p. 33; March, 1957.
17. Paul Penfield, Jr., "Transistors in Audio Circuits. IVb: Biasing the Transistor," Audiocraft, vol. 2, no. 3, pp. 24-25, 40-41; March, 1957.
18. Paul Penfield, Jr., "Page from an Engineer's Notebook. No. 39 -- Transistor Formulas," Electronic Industries & Tele-Tech, vol. 16, no. 4, p. 68; April, 1957.
19. Paul Penfield, Jr., "A Transistor VU Meter," Audio, vol. 41, no. 4, pp. 22-23, 59-60; April, 1957.
20. Paul Penfield, Jr., "Transistors in Audio Circuits. Va: Parameters; Equivalent Circuits," Audiocraft, vol. 2, no. 4, pp. 26-27, 42-43; April, 1957.
21. Paul Penfield, Jr., "Microvolt Signal Source," in Audio Aids column, Audiocraft, vol. 2, no. 5, p. 34; May, 1957.
22. Paul Penfield, Jr., "Transistors in Audio Circuits. Vb: Parameters; Equivalent Circuits," Audiocraft, vol. 2, no. 5, pp. 30-31, 45; May, 1957.
23. Paul Penfield, Jr., "Transistor Mike Preamps," Radio & TV News, vol. 57, no. 5, pp. 50-51; May, 1957.
24. Paul Penfield, Jr., "Tape-Recording Announce Mike," in Audio Aids column, Audiocraft, vol. 2, no. 6, p. 35; June, 1957.
25. Paul Penfield, Jr., "Transistors in Audio Circuits. VIa: Single-Stage Analysis," Audiocraft, vol. 2, no. 6, pp. 24-25, 43-44; June, 1957.
26. Paul Penfield, Jr., "A Survey of the Literature Relating to Ohmic Semiconductor Contacts," M.I.T. Lincoln Laboratory, Group Report M35-75; July 18, 1957.
22. Paul Penfield, Jr., "Circuit Reliability," Radio & Television News, vol. 57, no. 3, pp. 114-117; March, 1957.
23. Paul Penfield, Jr., "Hum Detection," in Audio Aids column, Audiocraft, vol. 2, no. 3, p. 33; March, 1957.
24. Paul Penfield, Jr., "Transistors in Audio Circuits. IVb: Biasing the Transistor," Audiocraft, vol. 2, no. 3, pp. 24-25, 40-41; March, 1957.

all articles listet here:
Paul Penfield, Jr. - Publications through 1959
 

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