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Old 8th December 2003, 09:57 PM   #1
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Question SUMO Power Amp

I just purchased a Sumo power amp, it is titled "The Nine" on the front. It is a massive thing relatively speaking. I spent a whopping $20.00 on it sight unseen. I hooked it up and it sounds great! Can anyone provide me with any information on this equipment?
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Old 8th December 2003, 10:11 PM   #2
Steven is offline Steven  Netherlands
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Schematic diagram is on http://home.kimo.com.tw/skychutw/Circuits/index.htm

Have fun!

Steven
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Old 8th December 2003, 10:21 PM   #3
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Thanks for the link!! How are these amps generally? It is not a brand I was familier with.
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Old 9th December 2003, 12:59 AM   #4
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It's an excellent amp, class A, 90 watts/ch I believe. Originall sold for about $1500 if I remember correctly. Designed by James Bongiorno of GAS and SAE fame.

Do a web search and you'll probably find a lot of info.
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Old 9th December 2003, 01:06 AM   #5
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you mean this one:
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Old 9th December 2003, 01:09 AM   #6
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here's the description:
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Old 9th December 2003, 01:11 AM   #7
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Quote:
Originally posted by Steven
Schematic diagram is on http://home.kimo.com.tw/skychutw/Circuits/index.htm

Have fun!

Steven

that's one interesting amp. Look at how it amplifies the + and - half, with all NPN transistors!

Interesting, isn't it?
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Old 9th December 2003, 07:02 AM   #8
Steven is offline Steven  Netherlands
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I think it's a so-called cyclotron. See other threads about this subject in this forum. The Sumo 9 is mentioned more often.

Steven
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Old 9th December 2003, 07:58 AM   #9
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Quote:
Originally posted by millwood



that's one interesting amp. Look at how it amplifies the + and - half, with all NPN transistors!

Interesting, isn't it?
But there's a complmentary section having both NPN AND PNP transistors, isn't it? But it is a ciRclotron, yes.

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Old 9th December 2003, 10:07 AM   #10
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Quote:
that's one interesting amp. Look at how it amplifies the + and - half, with all NPN transistors!
Some CROWN amps has the same...
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