Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Chip Amps Amplifiers based on integrated circuits

Chip Amp Photo Gallery
Chip Amp Photo Gallery
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 29th December 2009, 10:55 AM   #1301
AndrewT is offline AndrewT  Scotland
R.I.P.
 
Join Date: Jul 2004
Location: Scottish Borders
why do you want to parallel a pair of 8ohm drivers to give a 4ohm load and then give yourself the difficulty of designing a current limited chipamp that can adequately drive that low impedance load?

Use two amplifiers, each designed to drive an 8ohm load and dedicate one amp to one driver.

Fit each driver to it's own separate volume inside your box (sealed or vented) and if one driver or amp goes faulty you can still reproduce live music, just not as loud.
__________________
regards Andrew T.
  Reply With Quote
Old 29th December 2009, 11:28 AM   #1302
Pato666 is offline Pato666  Argentina
diyAudio Member
 
Join Date: Jun 2008
Location: San Juan
Send a message via MSN to Pato666
Thanks AndrewT for helping me how to plan this amp. You have a good idea , in the case of two bridged amp, i think i'll have to move to LM3886 chipamp. Thanks a lot guys.
__________________
  Reply With Quote
Old 30th December 2009, 04:51 PM   #1303
danmartin is offline danmartin  Argentina
diyAudio Member
 
danmartin's Avatar
 
Join Date: Aug 2009
Location: Quilmes
Default my first LM3886

Hi to everybody...

Here is my first LM3886 Chip Amp using PCBs Kit from: eBay Store - HiLife-store: DIY-Audio

Most part are recycled except for the input/output connectors,
The chassis was built in the steel plate of the 360 x 280 mm
The cover is from an old Video Cassette VHS Player
The power switch and AC Socket is from a died PC AXT power supply
The split/dual pot volume control & knob was the a cassette deck.
The power supply is a transformator 2x20V 5A.
The front plate is made a piece 5mm thick of aluminium and black anodize finish
I really had fun with the amp. The sound is clean and fast
Thank you to the diyAudio community for providing me information to build this project,
Happy new year everyone

Sorry, my english is not so good
Attached Images
File Type: jpg Front.JPG (95.6 KB, 2347 views)
File Type: jpg side front.JPG (81.6 KB, 2285 views)
File Type: jpg rear.JPG (112.6 KB, 2221 views)
  Reply With Quote
Old 30th December 2009, 04:53 PM   #1304
danmartin is offline danmartin  Argentina
diyAudio Member
 
danmartin's Avatar
 
Join Date: Aug 2009
Location: Quilmes
Other views
Attached Images
File Type: jpg inside.JPG (115.6 KB, 2246 views)
File Type: jpg from rear inside.JPG (106.2 KB, 2205 views)
File Type: jpg over front.JPG (92.3 KB, 736 views)
  Reply With Quote
Old 30th December 2009, 05:23 PM   #1305
Puffin is offline Puffin  United Kingdom
diyAudio Member
 
Join Date: Feb 2006
Location: U.K
Quote:
Originally Posted by danmartin View Post
Other views
Sounds bad then ?
  Reply With Quote
Old 30th December 2009, 07:17 PM   #1306
wim is offline wim  Netherlands
diyAudio Member
 
Join Date: Sep 2003
Location: Nootdorp, Netherlands
Default my last little job

Nice work Danmartin.....

My last little job: Peter Daniel boards with LM3875TF.

Power supply 2 x 120 VA. In plastic box, not interesting to show.

Sounds great.

The little VU-meters (with backgroundlight) are used becouse i had them laying around and they are nice to see, but they are no big deal.
Attached Images
File Type: jpg amp 001.JPG (856.0 KB, 1258 views)
File Type: jpg amp 006.JPG (693.7 KB, 1166 views)
File Type: jpg amp 005.JPG (642.3 KB, 708 views)
__________________
Als er "X" artikelen benodigd zijn, blijken er "X" - 1 in voorraad te zijn.
  Reply With Quote
Old 30th December 2009, 07:59 PM   #1307
Pato666 is offline Pato666  Argentina
diyAudio Member
 
Join Date: Jun 2008
Location: San Juan
Send a message via MSN to Pato666
Very good danmartin! Muy bueno!
Thanks for sharing your work.
__________________
  Reply With Quote
Old 31st December 2009, 02:40 AM   #1308
lanchile is offline lanchile  United States
diyAudio Member
 
lanchile's Avatar
 
Join Date: Sep 2008
Location: in my house!
Default More juice to it!

Hello I just add more juice to my integrated chip-amp.I had two "extra" Mundorf caps. so Now it has 20000uf per channel.The sound is wonderful.
Attached Images
File Type: jpg IMG_2667.jpg (490.9 KB, 748 views)
File Type: jpg IMG_2669.jpg (493.8 KB, 514 views)
File Type: jpg IMG_2670.JPG (959.9 KB, 380 views)
File Type: jpg IMG_2676.jpg (558.9 KB, 482 views)
  Reply With Quote
Old 31st December 2009, 02:42 AM   #1309
lanchile is offline lanchile  United States
diyAudio Member
 
lanchile's Avatar
 
Join Date: Sep 2008
Location: in my house!
More pictures.
Attached Images
File Type: jpg IMG_2678.jpg (552.8 KB, 603 views)
File Type: jpg IMG_2679.JPG (857.0 KB, 591 views)
File Type: jpg IMG_2682.jpg (361.0 KB, 619 views)
File Type: jpg IMG_2683.jpg (355.9 KB, 470 views)
File Type: jpg IMG_2687.JPG (888.8 KB, 356 views)
  Reply With Quote
Old 31st December 2009, 02:51 AM   #1310
Pato666 is offline Pato666  Argentina
diyAudio Member
 
Join Date: Jun 2008
Location: San Juan
Send a message via MSN to Pato666
nice knobs!
__________________
  Reply With Quote

Reply


Chip Amp Photo GalleryHide 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

Forum Jump


New To Site? Need Help?

All times are GMT. The time now is 02:28 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki