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24th June 2006, 10:16 AM
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#1 |
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diyAudio Member
Join Date: Jan 2005
Location: UK
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Cheap LM3886 gainclone project ?
Hi,
http://www.mcminone.com/product.asp?...277&info=specs I don't think they do a European voltage version   but 237 US versions available.Some of their other modules are also very nice. Any thoughts ? |
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25th June 2006, 05:11 AM
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#2 |
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diyAudio Member
Join Date: Nov 2002
Location: Brazil
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It´s a cheap amp for what it is. You could try replacing the TL064 opamps, with some burbrown ones and have a listen... It´s not that simple, as you should have a look at feedback paths so that the new opamps won´t oscilate or work with poor bandwith.
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25th June 2006, 08:15 PM
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#3 |
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diyAudio Member
Join Date: Mar 2006
Location: San Francisco, California
  
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Things I have learned about building LM3886 amps:
Don't buy the LM3886 chips themselves at Digikey, Mouser, Newark, or any other place BUT www.national.com. You can get samples for about $2.10 US there. Limit 5 a week. Scavenge at computer recycling centers for capacitors, transformers, and cases if you can. Use the standard computer plug shaped socket w/ 3 prongs for primary power. Use my Bleeder Resistor Switch Trick There are some tips for you 
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13th July 2006, 07:29 PM
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#4 |
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diyAudio Member
Join Date: Mar 2006
Location: San Francisco, California
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I was getting the chips for $2.10 USD but thats cos I was using a .mac e-mail account. Lame...but I changed it to exprice@the-diy-life.com, and now its FREE!!!
 Gotta love National Semiconductor!
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13th July 2006, 07:48 PM
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#5 | |
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diyAudio Member
Join Date: Jan 2005
Location: UK
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Quote:
Free how ? |
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