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-   -   Cheap LM3886 gainclone project ? (https://www.diyaudio.com/forums/chip-amps/82033-cheap-lm3886-gainclone-project.html)

ash_dac 24th June 2006 11:16 AM

Cheap LM3886 gainclone project ?
 
Hi,

http://www.mcminone.com/product.asp?...277&info=specs

I don't think they do a European voltage version :( :dead: but 237 US versions available.

Some of their other modules are also very nice.

Any thoughts ?

rafafredd 25th June 2006 06:11 AM

Itīs a cheap amp for what it is. You could try replacing the TL064 opamps, with some burbrown ones and have a listen... Itīs not that simple, as you should have a look at feedback paths so that the new opamps wonīt oscilate or work with poor bandwith.

DJ Exprice 25th June 2006 09:15 PM

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 :)

DJ Exprice 13th July 2006 08:29 PM

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!!! :D

Gotta love National Semiconductor! :)

ash_dac 13th July 2006 08:48 PM

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!!! :D

Gotta love National Semiconductor! :)


Free how ?

Arius 13th July 2006 09:47 PM

He means free as in free samples.

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


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