CSPP/Cirlotron - Brand Names of Commercial Solid State Amplifiers

[tiefbassuebertr]

About
URL collection of Totem Pole and CSPP (Single Ended related) Solid State Output Stage
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.

[tiefbassuebertr]

really no informations about commercial circlotron solid state models?

The invention of the Circlotron amplifier has generally been generally attributed to Alpha M. Wiggins of Electro-Voice, Inc., Buchanan, Michigan.
more basic informations about this topology are there:
Circlotron History Page

[EUVL]

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

[tiefbassuebertr]

Originally Posted by EUVL

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/634...-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:
Biasing schemes for bipolar transistor circlotrons
and partly this thread:
Best MOSFET for output stages

[tiefbassuebertr]

Are there any news?

[tiefbassuebertr]

I have heard, that Yamaha or DENON has introduce amplifiers with this CSPP topology. Who knows more ?

[tiefbassuebertr]

Originally Posted by tiefbassuebertr

I have heard, that Yamaha or DENON has introduce amplifiers with this CSPP topology. Who knows more ?

No Informations?

[banat]

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 !

[tiefbassuebertr]

Originally Posted by banat

Hi Tiefbass !
BTW you have forget to mention Atma-Sphere manufacture .
Best Regards !

interesting devices:
Atma-Sphere music systems, inc.
unfortunately tube amplifiers.

Originally Posted by banat

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-s20.../download.html
http://elektrotanya.com/yamaha_a-s10.../download.html

[banat]

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 : What tubes for a tube amp?

Best Regards !