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Old 24th June 2006, 10:16 AM   #1
ash_dac is offline ash_dac  United Kingdom
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Smile 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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Old 25th June 2006, 05:11 AM   #2
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Its a cheap amp for what it is. You could try replacing the TL064 opamps, with some burbrown ones and have a listen... Its not that simple, as you should have a look at feedback paths so that the new opamps wont oscilate or work with poor bandwith.
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Old 25th June 2006, 08:15 PM   #3
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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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Old 13th July 2006, 07:29 PM   #4
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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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Old 13th July 2006, 07:48 PM   #5
ash_dac is offline ash_dac  United Kingdom
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Quote:
Originally posted by DJ Exprice
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!

Free how ?
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Old 13th July 2006, 08:47 PM   #6
Arius is offline Arius  United States
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He means free as in free samples.

Do what you gotta do just don't resell them.
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