A new chip amp project - 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 5th June 2003, 01:49 AM   #1
diyAudio Member
 
JOE DIRT®'s Avatar
 
Join Date: Apr 2003
Location: Brantford, ON
Default A new chip amp project

I was doing some more unpacking today and ran into a plathora of samples I stuck in a unmarked box...Low and Behold I can across a pair of LM3886TF`s...I forgoit all about receiving them a year ago.....so I looked up the specs on them and they seem pretty good they are part of the Overture line....this works out perfect because I found a pair of STK4042`s also the other day....so thats two amps to build now!!!haha...I am thinking of making a nice surround amp with the 3886`s and maybe a centre channel with the STK`s

Cheers!!The DIRT®
  Reply With Quote
Old 5th June 2003, 01:52 AM   #2
diyAudio Member
 
JOE DIRT®'s Avatar
 
Join Date: Apr 2003
Location: Brantford, ON
  Reply With Quote
Old 5th June 2003, 04:07 AM   #3
jleaman is offline jleaman  Belgium
Banned
 
Join Date: Apr 2002
Send a message via AIM to jleaman
ok that is it. i have to ask where do you get samples from in canada as i would like to build the gain clone but no mula right now my plann is to get the chips and start the case and ect and work with the things that i can get for free right now.


where can i get free samples to start my stereo gain clone.

Any one...
  Reply With Quote
Old 5th June 2003, 04:26 AM   #4
diyAudio Member
 
JOE DIRT®'s Avatar
 
Join Date: Apr 2003
Location: Brantford, ON
I got them from National directly.....they still give away samples although you pay shipping now (new rule)....they are sending me 50 bucks worth for 10 bucks....pretty cheap

Cheers!!The DIRT®
  Reply With Quote
Old 5th June 2003, 04:52 AM   #5
jleaman is offline jleaman  Belgium
Banned
 
Join Date: Apr 2002
Send a message via AIM to jleaman
how do i get a hold of them and get some parts like that so i can build some chip amps. Can you email me how you did it so i can contact them i can pay the shipping but i cant afford parts right now.
  Reply With Quote
Old 9th June 2003, 01:23 PM   #6
Banned
 
Join Date: Mar 2003
Location: Lisbon, Portugal
Hi Joe,

Please don't use a different chip for the centre channel.
You should use the same chip all around.
What kills AV is people having different speakers / amps for front, centre and surround.
Please do it, but choose only one chip type for all channels.

If I were you, I'd choose the LM3886.
It sounds excellent.
BTW, do you need help unpacking?
  Reply With Quote
Old 16th June 2003, 06:32 PM   #7
diyAudio Member
 
JOE DIRT®'s Avatar
 
Join Date: Apr 2003
Location: Brantford, ON
I rigged this up on the weekend to start testing the chips...the system is Line isolated with the transformer on the left the toroid and EI* transformer will power the amp....there is a 35 amp bridge on a small heat sink and there are the 2 15 000 uf 80 volt caps


the heat sink is home made....this is all temporary
Attached Images
File Type: jpg dscf0009.jpg (67.8 KB, 833 views)
  Reply With Quote
Old 16th June 2003, 06:34 PM   #8
diyAudio Member
 
JOE DIRT®'s Avatar
 
Join Date: Apr 2003
Location: Brantford, ON
the Heatsink:
Attached Images
File Type: jpg dscf0010.jpg (58.4 KB, 815 views)
  Reply With Quote
Old 17th June 2003, 10:14 AM   #9
Banned
 
Join Date: Mar 2003
Location: Lisbon, Portugal
JOE,

Are you going to use the LM3886?
What voltages are those transformers?
  Reply With Quote
Old 17th June 2003, 10:48 AM   #10
diyAudio Moderator
 
pinkmouse's Avatar
 
Join Date: Apr 2002
Location: Chatham, England
Quote:
Originally posted by JasonL
how do i get a hold of them and get some parts like that so i can build some chip amps. Can you email me how you did it so i can contact them i can pay the shipping but i cant afford parts right now.
In the belief that anything worthwhile has to involve a little sweat, just go to the National website, (google works), and do some digging. It's all there if you look
__________________
Rick: Oh Cliff / Sometimes it must be difficult not to feel as if / You really are a cliff / when fascists keep trying to push you over it! / Are they the lemmings / Or are you, Cliff? / Or are you Cliff?
  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
My First Chip amp project - TA7270P Bow Chip Amps 3 21st October 2008 11:51 AM
Which Chip for first DIY project? systemerror909 Chip Amps 3 9th January 2006 04:32 AM
Suggestions for a chip amp Kit or Project? santiu Chip Amps 5 12th November 2005 04:06 PM
new project - chip amp?? yuval Chip Amps 3 14th July 2003 12:47 AM


New To Site? Need Help?

All times are GMT. The time now is 01:05 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