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Old 8th June 2005, 11:59 PM   #1
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Default Ampslab C200

Hi

Has anyone built the amplifier whose schematic appears at www.ampslab.com/c200_1.htm? How does it perform? Is it a worthwhile amp to build?

It seems to me that the topology and power output is similar to the M250 but it uses less (and different) output devices....therefore more economical to build.

Please let me have your views.
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Old 9th June 2005, 02:41 AM   #2
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I Have build one for subwoofer use.
Ampslab c200 soon finished.

I think it performs great. Bass has good kick and quality and for my use enough power.

I also figure out long time if i should build M250 or c200. Ampslab win the battle mostly because i think it is more thoroughly tested with good equipments etc.

I have been using it only as subamp so canīt tell much about sound quality in fullrange.

It worked fine in first run (except little DCoffset problems) and it is stable.

I also made PCBs for it.


Edit:fixed typos
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Old 9th June 2005, 04:15 PM   #3
PierreG is offline PierreG  Canada
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Quote:
Originally posted by savenger
I Have build one for subwoofer use.
Ampslab c200 soon finished.

I think it performs great. Bass has good kick and quality and for my use enough power.

I also figure out long time if i should build M250 or c200. Ampslab win the battle mostly because i think it is more thoroughly tested with good equipments etc.

I have been using it only as subamp so canīt tell much about sound quality in fullrange.

It worked fine in first run (except little DCoffset problems) and it is stable.

I also made PCBs for it.


Edit:fixed typos
Hi savenger !

1. What are the brands and models of the equipment you used with this Amp?

2. If you made a PCB, can you post it? Or mail it to me?
I would be interested to try it.
Thanks
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Old 9th June 2005, 07:16 PM   #4
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Hi PierreG.

1. You mean what? Measuring equipments or speaker what i'm driving? (i have myself only multimeter, i ment tested by Ampslab when they where designing it)

2. Yep. But some parts are not the same as in the original version, so pin compatibility may differ. And it is not so nicely finished, because got tight deadline when i did it.
Attached Files
File Type: zip silk.zip (71.3 KB, 427 views)
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Old 9th June 2005, 07:17 PM   #5
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Board size 116x93mm
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File Type: pdf pcb_mirror.pdf (41.1 KB, 445 views)
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Old 9th June 2005, 07:27 PM   #6
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schema
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File Type: zip schema.zip (48.5 KB, 416 views)
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Old 29th March 2006, 06:32 PM   #7
PierreG is offline PierreG  Canada
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Thanks a lot for the PCB and silk savenger.
I'm late for it, I tought I did it months ago
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Old 23rd May 2008, 04:16 PM   #8
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Location: Smoky Mountains , Tennessee
Default new c200 mod

Built my first Lin amp (c200) today,chose ampslab c200 since I will only use it to drive a 10" or 12" dayton or peerless sub.Click the image to open in full size.
Powered it up with + and - 60 volts ,no !

I read about star grounding and read half of this wonderful forum
to find only 1 person who has built this. His problem was that he couldn't zero the output. The little green 1k pot at the lower right
solved that!

It really helps to breadboard this circuit before building and to have a good prototyping PS +/- 3v to +/- 20v to work the bugs out.

BTW.. I ran 1ohm emitter resistors off the driver stage ,set the bias to 100ma,and ran a stable 10w amplifier for many hours off
this board. (with fan cooling)When I have more money I will buy MJ15003/4 outputs
to really do some tests.

If anyone has any suggestions on how i could make this project better please advise.
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