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Old 3rd April 2009, 03:17 PM   #1
funky2x is offline funky2x  Syria
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Default 2SC5200 / 2SA1943 Looking

am looking to build amp with the transistors 2sc5200 / 2sa1943
any one have idea where to look for schematic to start with ?
any help would be appreciated
thanks
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Old 3rd April 2009, 06:00 PM   #2
taj is offline taj
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Many to choose from. Here's one:

http://users.tpg.com.au/users/gerski...mp/default.htm
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Old 4th April 2009, 06:31 AM   #3
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Douglas Self has a "Blameless" amplifer, from what I gather he's had a few variants on the same theme. This uses those output trannies as far as I know.

G. Randy Slone also has a design based on them and if I recall from discussions on DIYaudio etc, its very similar to Self's blameless amp. I have built this one and it sounds fantastic and is very easy to build and setup.

http://www.amazon.com/Audio-Amplifie...8826767&sr=8-1

Contains the blameless amp, I believe.

http://www.amazon.com/High-Power-Aud...8826846&sr=1-1

Contains Slone's version, design 11.4.

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Old 6th April 2009, 05:58 AM   #4
funky2x is offline funky2x  Syria
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Taj , what about this one
Trust, the most delicious Dx Amplifier
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Old 6th April 2009, 06:15 AM   #5
taj is offline taj
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Sure, that one's fine. It's a little unusual because it's a very old circuit design from the 60's, but apparently it sounds fine.

The transistors you mentioned are very nice and very versatile and will work well with almost any modern circuit designed for BJT output transistors.

The first one I mentioned (DX Amp) is more "normal". And the "Blameless" design also mentioned here is also very well known.

Just pick a circuit and start building. Good luck.

..Todd
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Old 6th April 2009, 01:51 PM   #6
funky2x is offline funky2x  Syria
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Just for curiosity !
isnt there something wrong with the DX amplifier schematic about the obsolete VR2 mentiones in DX home page with the Pictures gallery , Greg Erskine picture and some other pictures .
why the VR2 is there ????
Different schematic ?
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Old 6th April 2009, 03:29 PM   #7
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I don't remember, to be honest. If you read the DX Amp thread you will find more information than you ever wanted. Lots of good information there.

You can ask Carlos for more information, but he will tell you to read the thread first.

http://www.diyaudio.com/forums/showt...16#post1134016

..Todd
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Old 6th April 2009, 03:44 PM   #8
funky2x is offline funky2x  Syria
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am now on page 11 of 238 pages .....
I will start build this amp the next spring when finish reading all the pages
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Old 6th April 2009, 09:34 PM   #9
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Is the DX amp the same as the SymASym?
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Old 6th April 2009, 11:33 PM   #10
john65b is offline john65b  United States
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KRELL KSA-50 CLONE!!!
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