Cheapest Chipamp Amplifier?

[samsagaz]

Hi guys, im trying to build the cheapest possible amplifier, at least 50 Watts and low THD

Can someone please tellme some amplifier with that specs?

 

[sterremuur]

LM3886 with some external components.

 

[AndrewT]

why two threads with the same question?
http://www.diyaudio.com/forums/solid-state/178802-cheapest-solid-state-amp.html#post2392515

 

[Redshift187]

The majority of the expenses are usually the somewhat generic parts like the case, the heatsink, the power supply, etc. If you can build these with recycled parts you will save a lot. I always grab up old receivers/amplifiers whenever I see them for free heatsinks and transformers.

 

[samsagaz]

why two threads with the same question?
http://www.diyaudio.com/forums/solid-state/178802-cheapest-solid-state-amp.html#post2392515

Im trying to build 2 diferents amplifiers, one with chipamps and other with discrete components!

 

[samsagaz]

i already build some LM3886 and 4780 amplifiers, but expensive kits. Using less components will sound the same? :S some link to some low parts chipamp¿

 

[godfrey]

For lower cost, use point-to-point wiring instead of a PCB.

 

[daniel jimenez]

check the product pages from national semiconductors:
3886
4780
there are some datasheets right there where you can find application circuits

i believe the whole circuit (minus power supply) should be under 10 elements for the lm3886. i'm actually about to build a 4780 myself, be sure to post as you make progress!