Digital Amplifier Project - diyAudio
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 3rd March 2014, 02:46 AM   #1
diyAudio Member
 
panson_hk's Avatar
 
Join Date: Aug 2005
Blog Entries: 10
Default Digital Amplifier Project

I am working on an commercial active speaker project that will use VIA VT1736 USB controller, TI TAS5548 audio processor and TAS5612LA class D output. I also want to make it available to the DIY world. Any comment?
  Reply With Quote
Old 3rd March 2014, 08:43 PM   #2
diyAudio Member
 
doctormord's Avatar
 
Join Date: Oct 2007
Good!
__________________
http://www.360customs.de
  Reply With Quote
Old 3rd March 2014, 09:27 PM   #3
diyAudio Member
 
Join Date: Dec 2004
Location: Reston, Virginia
Default Active speaker amplifier?

This could be a great amp for active speakers. It would be especially nice if the amp could be mounted to a plate for heatsinking, so the assembly could be mounted to the back of a speaker.

I've got a lot of working code for designing active speakers using the ST309 multichannel amp, and it wouldn't take much to adapt it to the TAS5548. I'd be glad to provide the firmware and software for this program or to collaborate in some way.
  Reply With Quote
Old 16th March 2014, 02:05 AM   #4
diyAudio Member
 
Join Date: Sep 2004
Location: Napier, Hawkes Bay
I would be very interested in a board that has the TAS5548, I2S input, USB connection for control of the DSP parameters, an on-board MCU for interface and storage of DSP parameters, and an interface board that has SPDIF/AES/TOSLINK and volume control via IR

I think this may be too much to ask!

best regards,
Mike
  Reply With Quote
Old 21st March 2014, 07:44 AM   #5
diyAudio Member
 
panson_hk's Avatar
 
Join Date: Aug 2005
Blog Entries: 10
Quote:
Originally Posted by Neil Davis View Post
I've got a lot of working code for designing active speakers using the ST309 multichannel amp, and it wouldn't take much to adapt it to the TAS5548. I'd be glad to provide the firmware and software for this program or to collaborate in some way.
Quote:
Originally Posted by mikey_audiogeek View Post
I would be very interested in a board that has the TAS5548, I2S input, USB connection for control of the DSP parameters, an on-board MCU for interface and storage of DSP parameters, and an interface board that has SPDIF/AES/TOSLINK and volume control via IR
Hi Neil,

Thanks for your comment and willing to do firmware. I look forward to having a join project.

Hi Mike,

Your suggestion is actually I am working after, more or less. The amp will accept multiple input both analog and digital.

Please see picture of the test board. The board does not have everything but 5548/5558 and 5612.

Cheers,
Panson
Attached Images
File Type: jpg Test Board.jpg (774.6 KB, 920 views)
  Reply With Quote
Old 21st March 2014, 11:22 AM   #6
diyAudio Member
 
panson_hk's Avatar
 
Join Date: Aug 2005
Blog Entries: 10
The amp section TAS5612 of the board is working. I use TAS5548 EVM to feed the PWM signals to TAS5612. I will populate the TAS5548 section next.
Attached Images
File Type: jpg Test Board Running.jpg (813.5 KB, 852 views)
  Reply With Quote
Old 22nd March 2014, 09:22 PM   #7
RAndyB is offline RAndyB  United Kingdom
diyAudio Member
 
Join Date: May 2005
Location: Herefordshire
Quote:
Originally Posted by panson_hk View Post
I also want to make it available to the DIY world. Any comment?
I have been hoping for something just like this.

Andy
  Reply With Quote
Old 28th March 2014, 09:26 AM   #8
diyAudio Member
 
panson_hk's Avatar
 
Join Date: Aug 2005
Blog Entries: 10
Here is my TAS5548+5612 board operating with an Arduino board being a host controller. Signal source is from VIA VT7136 USB audio streamer. I have tested it for 24-bit, 192 kHz.

foobar + upsampler, VIA ASIO driver, 5548 native 192 kHz processing.
Attached Images
File Type: jpg Arduino TAS5548.jpg (455.0 KB, 716 views)

Last edited by panson_hk; 28th March 2014 at 09:55 AM.
  Reply With Quote
Old 28th March 2014, 11:46 PM   #9
diyAudio Member
 
Join Date: Sep 2004
Location: Napier, Hawkes Bay
Very cool!

Quick question: Why the 5612LA?

(5612A seems to have slightly better performance.)

Cheers,
Mike

Last edited by mikey_audiogeek; 28th March 2014 at 11:48 PM.
  Reply With Quote
Old 29th March 2014, 08:55 AM   #10
diyAudio Member
 
panson_hk's Avatar
 
Join Date: Aug 2005
Blog Entries: 10
I looked for an older part (TAS5716) initially for single multiple channels. TI suggested 5612LA for new design as 5716 is "old". Now I can do high-power stereo.On the other hand, I need two 5612 for stereo active 2-way (full bridge).

One 5548 (96 k processing) can drive four 5612 (stereo, full bridge) for an active four-way project. What do you think?
  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
Another project, all digital DDX amplifier hifimediy Vendor's Bazaar 461 30th September 2014 06:54 AM
Anyone interested in a digital amplifier project? Rookie Class D 552 24th September 2014 09:29 PM
Digital X-over project borges Multi-Way 9 4th July 2008 08:39 AM


New To Site? Need Help?

All times are GMT. The time now is 02:31 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