anyone selling a PCB for LM3875? - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

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
Reply
 
Thread Tools Search this Thread
Old 3rd June 2003, 08:41 PM   #1
cowanrg is offline cowanrg  United States
diyAudio Member
 
cowanrg's Avatar
 
Join Date: Apr 2002
Location: Lafayette, CO
Send a message via AIM to cowanrg
Default anyone selling a PCB for LM3875?

subject kinda says it all. im looking for a PCB for a LM3875 based gainclone. im wanting to do a 7-channel version for home theatre, but i dont want to to P2P because it would be way too messy. (IMO). ive seen some people making boards, but anyone selling them?
  Reply With Quote
Old 3rd June 2003, 09:02 PM   #2
Rob M is offline Rob M  United States
diyAudio Member
 
Join Date: Feb 2003
Location: San Diego, CA
This is pretty close:

http://sound.westhost.com/project19.htm
  Reply With Quote
Old 3rd June 2003, 09:08 PM   #3
diyAudio Member
 
Join Date: Aug 2002
Location: Farmington, CT
Send a message via AIM to Mattyo5
I have built project 19...quite easy actually. But its not for the 3875 ...different pinout. It does work for the lm3886 and lm3876...though I recommend the 3886...more power Nice amp though. I have also built gainclones w/ the 3875 chip...sorry can't compare sound b/c I sold my amp w/ the 3886 chips (needed the $$). I think someone should make up a 3875 board...but it is best if you point to point it. and it doesn't have to be messy. Later!

-Matthew K. Olson
  Reply With Quote
Old 3rd June 2003, 09:15 PM   #4
diyAudio Member
 
Join Date: Nov 2002
here .....scroll down....
  Reply With Quote
Old 4th June 2003, 04:34 AM   #5
cowanrg is offline cowanrg  United States
diyAudio Member
 
cowanrg's Avatar
 
Join Date: Apr 2002
Location: Lafayette, CO
Send a message via AIM to cowanrg
looks good, but i dont see prices :-) maybe ill email him and see.

looks quite simple though, i dont see how that's the whole gainclone.

Quote:
Originally posted by mekanoplastik
here .....scroll down....
  Reply With Quote
Old 4th June 2003, 04:45 AM   #6
diyAudio Member
 
Peter Daniel's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
Quote:
Originally posted by cowanrg
i dont see how that's the whole gainclone.

Did you expect more parts?
__________________
www.audiosector.com
“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC
  Reply With Quote
Old 4th June 2003, 05:44 AM   #7
cowanrg is offline cowanrg  United States
diyAudio Member
 
cowanrg's Avatar
 
Join Date: Apr 2002
Location: Lafayette, CO
Send a message via AIM to cowanrg
eh, now that i look at it, it seems like them all... just looks lacking on a circuit board.
  Reply With Quote
Old 4th June 2003, 06:24 AM   #8
Jean is offline Jean  United States
diyAudio Member
 
Jean's Avatar
 
Join Date: Mar 2002
Location: Sacramento, CA
Send a message via AIM to Jean
Exactly, just do it ptp it will actually be smaller.
__________________
left lane is for passing, slower traffic keep right please.
  Reply With Quote
Old 13th June 2003, 04:15 PM   #9
ukram is offline ukram  Finland
diyAudio Member
 
Join Date: Jun 2003
Location: Espoo, Finland
I just put up a web site http://hepso.dna.fi/misc/Lm3886_amplifier.html for my LM3886 project. I'm a single-man-company with no work and no income currently, so i could make another PCB for the LM3875 and start selling them...

The LM3875 seems to have lower noise, so it is interesting. Although the LM3886 also is very quiet... with full volume and nothing in the input and closed headphones i cannot hear any noise.

The LM3875 is also simpler, which makes it easier to design a good board.
  Reply With Quote
Old 13th June 2003, 07:15 PM   #10
Nuuk is offline Nuuk  United Kingdom
diyAudio Member
 
Nuuk's Avatar
 
Join Date: Feb 2003
Location: Somerset, SW England
Not a 3875 but Quality kits do a 1875 kit.
__________________
The truth need not be veiled, for it veils itself from the eyes of the ignorant.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Selling everything..help please corryn00 Swap Meet 2 27th January 2005 04:09 AM
Selling Zen v4 kit. steenoe Pass Labs 4 4th November 2004 07:30 AM
Selling li_gangyi Parts 0 2nd September 2003 12:39 PM


New To Site? Need Help?

All times are GMT. The time now is 10:46 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2