First chip amp - Looking for suggestions

peter_m · 5th January 2008, 06:56 AM

Is there a preferred chip for a solid 30 to 60 watt / channel amp for an 8 ohms load? First time project so it should be a "simpler" design using inexpensive chips so I can burn and learn...

Also is a 100 or 150 watt sub amplifier worth the time and effort?

Peter

Nordic · 5th January 2008, 01:36 PM

LM3875.. with 25VAC transformer , say 200 to 300VA, only need to use 5 of its pins.. can cut the rest off.. with parts soldered point to point....

google Nuuk's site Decibel Dungeon...

Erm... I would say its probably less hassle for the money to get a small plate amp for the Bass.

gmilitano · 5th January 2008, 03:29 PM

Here are some other point to point gainclones:

http://diyaudioprojects.com/Chip/P2PLM3875/index.htm
http://dogbreath.de/Chipamps/GainCar...nCardCopy.html

paulb · 9th January 2008, 05:25 PM

If you'd prefer a PCB take a look at www.chipamp.com. LM3886 is very similar to LM3875.

jduffy · 9th January 2008, 10:13 PM

Quote:

Originally posted by gmilitano
Here are some other point to point gainclones:

http://diyaudioprojects.com/Chip/P2PLM3875/index.htm
http://dogbreath.de/Chipamps/GainCar...nCardCopy.html

Nice Links man. I used Nuuk's site and took what I could get from the forum. I got mine up and running first try with no problems to speak of.

5th January 2008, 06:56 AM	#1
peter_m diyAudio Member Join Date: May 2007	First chip amp - Looking for suggestions Is there a preferred chip for a solid 30 to 60 watt / channel amp for an 8 ohms load? First time project so it should be a "simpler" design using inexpensive chips so I can burn and learn... Also is a 100 or 150 watt sub amplifier worth the time and effort? Peter

5th January 2008, 03:29 PM	#3
gmilitano diyAudio Member Join Date: Apr 2004 Location: Winnipeg, Manitoba	Here are some other point to point gainclones: http://diyaudioprojects.com/Chip/P2PLM3875/index.htm http://dogbreath.de/Chipamps/GainCar...nCardCopy.html __________________ DIY Audio Projects [ 10" DIY Subwoofer \| FE127E Sealed Bipole \| [ LM3886 Chip Amp / Gainclone \| K-12M Tube Amp Kit ]

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Suggestions for DAC Chip	dsavitsk	Digital Source	8	21st August 2007 04:49 PM
Suggestions for a chip amp Kit or Project?	santiu	Chip Amps	5	12th November 2005 04:06 PM
Suggestions for a stepup chip for battery powered headphone amp (from OPA134) anyone?	Morse	Headphone Systems	8	24th December 2004 03:50 PM
Need suggestions for basic chip amp kit	percy	Chip Amps	5	18th August 2004 04:08 PM
Suggestions for new amp chip.	soundNERD	Chip Amps	10	15th December 2003 12:41 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

5th January 2008, 01:36 PM	#2
Nordic diyAudio Member Join Date: Sep 2005	LM3875.. with 25VAC transformer , say 200 to 300VA, only need to use 5 of its pins.. can cut the rest off.. with parts soldered point to point.... google Nuuk's site Decibel Dungeon... Erm... I would say its probably less hassle for the money to get a small plate amp for the Bass.

9th January 2008, 05:25 PM	#4
paulb diyAudio Member Join Date: Jun 2001 Location: Calgary	If you'd prefer a PCB take a look at www.chipamp.com. LM3886 is very similar to LM3875.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)