Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

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 14th May 2012, 05:09 PM   #101
gmarsh is offline gmarsh  Canada
diyAudio Member
 
gmarsh's Avatar
 
Join Date: Apr 2004
Location: Halifax, NS, Canada
As promised, the first half of the design files - the Eagle files, including schematic/board/library. Files require Eagle 6.2 or later. There's a readme file in the eagle files zip which is a very rough draft of a manual - I wrote it originally to state the license, but kept on writing

There's also a PDF file attached here with the schematic - this may not be 100% correct to the PCB (part designators may be different) but it might be handy to look at. Refer to the .SCH file for the official copy.

The design posted is almost identical to the "V0.99" prototype PCBs which I ordered, with a couple of very slight changes - I moved the DSP I2C connector slightly to the right (the terminal block interferes with it on the prototype), I removed the PCB order tracking number and I updated the board version from 0.99 to 1.00.

I still have to finish the SigmaDSP and AVR code before I release them. Biamp modes and equalization will probably not be working when I do release them - I'm planning to biamp my GT-1001/GW-1058 Boominator when it's built and I will have a suitable crossover/equalization setup ready at that point, but I can't provide the same for anything built with HP-10Ws etc.

Everything here is released under a Creative Commons CC-BY-SA 3.0 license. Hack away!
Attached Files
File Type: zip shiznit_eagle_files.zip (138.3 KB, 70 views)
File Type: pdf shiznit.pdf (65.8 KB, 207 views)
  Reply With Quote
Old 14th May 2012, 07:52 PM   #102
kblnig is offline kblnig  Denmark
diyAudio Member
 
Join Date: Oct 2010
Just out of curiousity.. what did you use to draw the shiznit.pdf schematic?
  Reply With Quote
Old 15th May 2012, 12:23 AM   #103
gmarsh is offline gmarsh  Canada
diyAudio Member
 
gmarsh's Avatar
 
Join Date: Apr 2004
Location: Halifax, NS, Canada
Quote:
Originally Posted by kblnig View Post
Just out of curiousity.. what did you use to draw the shiznit.pdf schematic?
Eagle. Exported a picture, and used Openoffice to make a PDF.
  Reply With Quote
Old 15th May 2012, 08:33 AM   #104
diyAudio Member
 
Join Date: Jul 2011
Location: Copenhagen
Quote:
Originally Posted by gmarsh View Post
Eagle. Exported a picture, and used Openoffice to make a PDF.
You can also just download cutePdf writer and "print" to PDF directly.

Very neat work btw!
  Reply With Quote
Old 15th May 2012, 08:37 AM   #105
kblnig is offline kblnig  Denmark
diyAudio Member
 
Join Date: Oct 2010
Quote:
Originally Posted by gmarsh View Post
Eagle. Exported a picture, and used Openoffice to make a PDF.
Might be because i have an older version of eagle then - when i try to export it the schematic is not as nice as the one you made.. mine does not have the "1-2-3" indexes and does not show information about "author, version" etc! hmmm
  Reply With Quote
Old 15th May 2012, 01:49 PM   #106
diyAudio Member
 
Join Date: Jul 2011
Location: Copenhagen
Quote:
Originally Posted by kblnig View Post
Might be because i have an older version of eagle then - when i try to export it the schematic is not as nice as the one you made.. mine does not have the "1-2-3" indexes and does not show information about "author, version" etc! hmmm
You need to insert a "frame" to show these things.
  Reply With Quote
Old 11th July 2012, 03:57 PM   #107
gmarsh is offline gmarsh  Canada
diyAudio Member
 
gmarsh's Avatar
 
Join Date: Apr 2004
Location: Halifax, NS, Canada
Update: project is still ongoing, albeit very slowly.

I was hoping to have the card finished and stereo built this year for camping trips, now the camping trips are keeping me from working on the stereo
  Reply With Quote
Old 6th August 2012, 01:57 PM   #108
diyAudio Member
 
danielwritesbac's Avatar
 
Join Date: Nov 2007
<-- Fascinated

I have just one suggestion. To constrain some variety so that going forwards is easier, why don't you start a poll/survey asking what speaker configurations to support?

I think I've collected some data on that:
4 P.Audio HP10w (boominator)
2 P.Audio HP10w (halfinator)
4 Goldwood GW-1058 (usa/china boominator)
2 Eminiance Basslite S2010 (lightweight halfinator)
4 Monacor SP-60/4 (miniature boominator)
2 Monacor SP-60/4 (miniature halfinator)

So, for the inbuilt EQ, there's just 4 woofers to support. In this case, couldn't the amplifiers be pre-set so that end-users don't have to program the DSP?
__________________
Tools, Models & Software for DIYClipNipper boostLM1875 TurboPowerful TDA7293 kitTDA7294 pt2pt ♦ My post has opinion.
  Reply With Quote
Old 7th August 2012, 04:37 PM   #109
gmarsh is offline gmarsh  Canada
diyAudio Member
 
gmarsh's Avatar
 
Join Date: Apr 2004
Location: Halifax, NS, Canada
Only thing is, I don't really have any response curves for any of these speaker arrangements, or a method of generating them. A speaker in free space isn't too bad, a bipolar Boominator resting on the ground with piezo tweeters is a bit tougher to model.

Mind you I haven't really put in the effort to try... Any help would be highly appreciated
  Reply With Quote
Old 8th August 2012, 04:28 PM   #110
diyAudio Member
 
danielwritesbac's Avatar
 
Join Date: Nov 2007
That sounds like you'd need EQ settings from people who have the speakers, right?

P.S.
Or some documentation that would help people make their own settings?
__________________
Tools, Models & Software for DIYClipNipper boostLM1875 TurboPowerful TDA7293 kitTDA7294 pt2pt ♦ My post has opinion.
  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
Can Class D be built on a single side PCB??? Leolabs Class D 9 12th January 2007 03:09 PM
Anybody built SP38/13 speaker project from Troels website? supernet Multi-Way 2 7th July 2006 02:35 PM
Multi purpose multi channel gainclone PCB: Team project - group buy rick57 Chip Amps 14 29th March 2003 05:54 PM


New To Site? Need Help?

All times are GMT. The time now is 04:25 AM.


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