2SC5200 / 2SA1943 Looking

funky2x · 3rd April 2009, 03:17 PM

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

taj · 3rd April 2009, 06:00 PM

Many to choose from. Here's one:

http://users.tpg.com.au/users/gerski...mp/default.htm

5th element · 4th April 2009, 06:31 AM

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.

funky2x · 6th April 2009, 05:58 AM

Taj , what about this one
Trust, the most delicious Dx Amplifier

taj · 6th April 2009, 06:15 AM

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

funky2x · 6th April 2009, 01:51 PM

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 ?

taj · 6th April 2009, 03:29 PM

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

funky2x · 6th April 2009, 03:44 PM

am now on page 11 of 238 pages .....
I will start build this amp the next spring when finish reading all the pages

marc brown · 6th April 2009, 09:34 PM

Is the DX amp the same as the SymASym?

john65b · 6th April 2009, 11:33 PM

KRELL KSA-50 CLONE!!!

3rd April 2009, 03:17 PM	#1
funky2x diyAudio Member Join Date: Jan 2008	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

4th April 2009, 06:31 AM	#3
5th element diyAudio Member Join Date: Oct 2002 Location: England	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. __________________ What the hell are you screamin' for? Every five minutes there's a bomb or somethin'! I'm leavin! bzzzz! Droggon Attack!

6th April 2009, 11:33 PM	#10
john65b diyAudio Member Join Date: Jan 2005 Location: Chicago	KRELL KSA-50 CLONE!!! __________________ "I speak Spanish to God, Italian to Women, French to Men, and German to my Horse" - Charles V

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3rd April 2009, 06:00 PM	#2
taj diyAudio Member Join Date: Feb 2005	Many to choose from. Here's one: http://users.tpg.com.au/users/gerski...mp/default.htm

6th April 2009, 05:58 AM	#4
funky2x diyAudio Member Join Date: Jan 2008	Taj , what about this one Trust, the most delicious Dx Amplifier

6th April 2009, 06:15 AM	#5
taj diyAudio Member Join Date: Feb 2005	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

6th April 2009, 01:51 PM	#6
funky2x diyAudio Member Join Date: Jan 2008	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 ?

6th April 2009, 03:29 PM	#7
taj diyAudio Member Join Date: Feb 2005	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

6th April 2009, 03:44 PM	#8
funky2x diyAudio Member Join Date: Jan 2008	am now on page 11 of 238 pages ..... I will start build this amp the next spring when finish reading all the pages

6th April 2009, 09:34 PM	#9
marc brown diyAudio Member Join Date: Sep 2007	Is the DX amp the same as the SymASym?

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