CSPP/Cirlotron - Brand Names of Commercial Solid State Amplifiers - diyAudio
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Old 8th February 2010, 03:41 PM   #1
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Default CSPP/Cirlotron - Brand Names of Commercial Solid State Amplifiers

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.

Last edited by tiefbassuebertr; 8th February 2010 at 03:45 PM.
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Old 29th March 2010, 03:34 PM   #2
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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
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Old 29th March 2010, 04:21 PM   #3
EUVL is offline EUVL  Europe
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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

Last edited by EUVL; 29th March 2010 at 04:41 PM.
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Old 17th October 2010, 05:57 PM   #4
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Quote:
Originally Posted by EUVL View Post
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
Attached Images
File Type: jpeg Vermona Regent 620 front.jpeg (44.5 KB, 744 views)
File Type: jpeg Vermona Regent 620 rear.jpeg (18.1 KB, 723 views)
File Type: png Vermona regent_620-1020-pwr circl.pdf_1.png (87.4 KB, 744 views)

Last edited by tiefbassuebertr; 17th October 2010 at 06:00 PM.
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Old 22nd February 2011, 09:51 PM   #5
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Old 24th May 2012, 09:57 AM   #6
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I have heard, that Yamaha or DENON has introduce amplifiers with this CSPP topology. Who knows more ?
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Old 30th November 2012, 06:01 PM   #7
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Quote:
Originally Posted by tiefbassuebertr View Post
I have heard, that Yamaha or DENON has introduce amplifiers with this CSPP topology. Who knows more ?
No Informations?
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Old 30th November 2012, 07:01 PM   #8
banat is offline banat  Serbia
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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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File Type: jpg Yamaha AS 1000&2000.jpg (143.9 KB, 373 views)
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Old 5th December 2012, 10:48 AM   #9
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Quote:
Originally Posted by banat View Post
Hi Tiefbass !
BTW you have forget to mention Atma-Sphere manufacture .
Best Regards !
interesting devices:
Atma-Sphere music systems, inc.
unfortunately tube amplifiers.
Quote:
Originally Posted by banat View Post
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
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Old 5th December 2012, 01:33 PM   #10
banat is offline banat  Serbia
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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 : What tubes for a tube amp?

Best Regards !

Last edited by banat; 5th December 2012 at 01:35 PM.
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