FYI: Linkwitz has updated his LM3886 design - diyAudio
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Old 7th April 2005, 08:48 PM   #1
akunec is offline akunec  Canada
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Default FYI: Linkwitz has updated his LM3886 design

FYI: Linkwitz has updated his LM3886 design
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Old 7th April 2005, 09:42 PM   #2
Adam M. is offline Adam M.  United States
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Link? I checked my bookmark to his amp and it is still the one from 2000
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Old 7th April 2005, 10:04 PM   #3
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Can you give a link?
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Old 8th April 2005, 04:41 AM   #4
Davey is offline Davey  United States
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http://www.linkwitzlab.com/images/graphics/3886amp.gif

I'm not sure what he changed, but there is a date of 3-27-05 noted on the bottom so he's updated it somehow.

Cheers,

Davey.
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Old 8th April 2005, 09:22 PM   #5
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I dont have the old one, but i cant see what have been changed..

i remember looking it over, trying to understand the reason for the ekstra parts..
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Old 8th April 2005, 11:38 PM   #6
Davey is offline Davey  United States
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Here's a copy of the old one:

http://www.woodartistry.com/linkwitz...cs/3886amp.gif

The only difference I see is the removal of the capacitor across the feedback resistor and the capacitor across the input terminals.

Davey.
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Old 9th April 2005, 12:55 AM   #7
sek is offline sek  Germany
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This is quite interesting, as I have integrated the input (RFI) filter capacitor (but not the feedback bypass cap).

Would be good to know SL's motivation to no longer recommend them. Perhaps he found them to be unneccessary and thus did the engineering step to leave out what's not required.

Sebastian.

PS: One can actually see where he used the eraser.
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Old 10th April 2005, 06:13 PM   #8
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because lm3886 is not unity gain stable

... It was a SL3886 problem which carlosfm pointed out few weeks ago
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Old 10th April 2005, 06:32 PM   #9
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By the way....I love SL's website so much. Very informative
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