CSPP/Cirlotron - Brand Names of Commercial Solid State Amplifiers

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http://www.diyaudio.com/forums/soli...e-ended-related-solid-state-output-stage.html
I have listet some URLs, mostly basic articles and diy projects.

From the commercial brands with circlotron topology inside by solid state power output I know only "SUMO" (and several others with tubes like GRAAF GM-20). BAT (Balanced Audio Technology) perhaps uses also this topology by their solid state amps, but this I don't know exactly (schematic information wanted).

Which additional commercial brands uses this cross shunt push pull topology in their solid state amplifiers?

Thank you very much for your advices in advance.
 
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Maybe you did not look hard enough :
6moons audio reviews: Thorens TEM 3200
Stereoplay, das Magazin fr Hifi, Surround und Musik - Know-how
The output stage, which is circlotron, is SS.
The front end is just normal tube gain stage.
Patrick

Thank you for this advice. additional I have find an additional solid state vintage amp with circlotron topology:
Vermona Regent 620
http://elektrotanya.com/PREVIEWS/63463243/23432455/regent/regent_620-1020-pwr.pdf_1.png
and concerning the Thorens TEM 3200 this sites:
6moons audio reviews: Thorens TEM 3200
Test der neuen Thorens Monoendstufe TEM 3200 in Stereoplay 01/06, Verstärker/Receiver - HIFI-FORUM
Circlotron Amplifiers Once Again
THORENS - TEM 3200

But there are must me a lot of more brands with circlotron/CSPP/PPP than Thorens, Vermona and Sumo - who knows additional brands without tubes in the power stage ??

here on diyaudio this new thread concerning the Circlotron topology exist:
http://www.diyaudio.com/forums/soli...g-schemes-bipolar-transistor-circlotrons.html
and partly this thread:
http://www.diyaudio.com/forums/solid-state/23526-best-mosfet-output-stages-11.html
 

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Hi Tiefbass !

Yes Yamaha introduced two SS Amps that use Circlotron topology , AS2000 & As 1000 , here is Yamaha commercial flyer with block schematics .

BTW you have forget to mention Atma-Sphere manufacture .

Best Regards !
 

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Hi Tiefbass !
BTW you have forget to mention Atma-Sphere manufacture .
Best Regards !
interesting devices:
Atma-Sphere music systems, inc.
unfortunately tube amplifiers.
Hi Tiefbass !
Yes Yamaha introduced two SS Amps that use Circlotron topology , AS2000 & As 1000 , here is Yamaha commercial flyer with block schematics .
Best Regards !
Thank you.
Schematics are here for the models "A-S2000" and "A-S1000":
http://elektrotanya.com/yamaha_a-s2000_sch.pdf/download.html
http://elektrotanya.com/yamaha_a-s1000_sm.pdf/download.html
 
Hi Tiefbass !

After my provisional analyze of Yamaha AS series of Circlotron based SS Amp I have concluded that both Amps circuitry is too much complex , any way to have both original Yamaha manual from your links is not bad for future service purposes .

On the other hand Atma-Sphere founder & main circuit designer Mr.Ralph Karsten have fully supported DIY community to DIY his M60 OTL Circlotron tube Amp here : http://www.diyaudio.com/forums/tubes-valves/161112-what-tubes-tube-amp-2.html

Best Regards !
 
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Hi Tiefbass !

After my provisional analyze of Yamaha AS series of Circlotron based SS Amp I have concluded that both Amps circuitry is too much complex , any way to have both original Yamaha manual from your links is not bad for future service purposes .

On the other hand Atma-Sphere founder & main circuit designer Mr.Ralph Karsten have fully supported DIY community to DIY his M60 OTL Circlotron tube Amp here : http://www.diyaudio.com/forums/tubes-valves/161112-what-tubes-tube-amp-2.html

Best Regards !

schematic representations from Japan show a significantly higher degree of compexity than it is in reality through their special art of drawing.
Carfully redraw shows the true level of complexity of the actually circuit.
Remove source select for "LISTEN" , source select for tape/record and volume control select switches (integrated circuit from Toshiba) and you know, what I mean.

P.S. I can't discover the typicall circlotron (CSPP) topology - only true complementary push-pull output buffer I have found. Who can help to find out the circlotron power amp section?
 
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Hi Tiefbass !

AS2000 service manual , page 66 ( H4 ) , six N type BJT power devices 2SC6011 it is connected to form output power stage balanced bridge ( Circlotron ) , actually three power devices is connected parallel per each bridge side .

Regards !
 
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Balanced bridge ( Circlotron ) power amp from Soviet 80` era , it was mass produced in USSR under I think some `Amphiton` name , not sure 100% but I have some indication that Vladimir Lamm was designer of this circuit .

Regards !
 

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