Cheapest Chipamp Amplifier?

samsagaz · 9th December 2010, 01:04 PM

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 · 9th December 2010, 01:23 PM

LM3886 with some external components.

AndrewT · 9th December 2010, 01:45 PM

why two threads with the same question?
Cheapest Solid State Amp?

Redshift187 · 9th December 2010, 05:31 PM

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 · 9th December 2010, 05:37 PM

Quote:

Originally Posted by AndrewT

why two threads with the same question?
Cheapest Solid State Amp?

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

samsagaz · 9th December 2010, 05:39 PM

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 · 9th December 2010, 06:02 PM

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

daniel jimenez · 10th December 2010, 07:23 AM

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!

9th December 2010, 01:04 PM	#1
samsagaz diyAudio Member Join Date: Aug 2004 Location: Argentina	Cheapest Chipamp Amplifier? 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?

9th December 2010, 01:45 PM	#3
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	why two threads with the same question? Cheapest Solid State Amp? __________________ regards Andrew T.

9th December 2010, 05:31 PM	#4
Redshift187 diyAudio Member Join Date: Aug 2008	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. __________________ Tyler

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9th December 2010, 01:23 PM	#2
sterremuur diyAudio Member Join Date: Apr 2006 Location: Haren, NL	LM3886 with some external components.

9th December 2010, 05:39 PM	#6
samsagaz diyAudio Member Join Date: Aug 2004 Location: Argentina	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¿

9th December 2010, 06:02 PM	#7
godfrey diyAudio Member Join Date: Nov 2009 Location: Cape Town	For lower cost, use point-to-point wiring instead of a PCB.

10th December 2010, 07:23 AM	#8
daniel jimenez diyAudio Member Join Date: Nov 2010	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!

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