Audio Workshop D3 Kit - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

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 November 2005, 09:15 PM   #1
diyAudio Member
 
lawbadman's Avatar
 
Join Date: Mar 2003
Location: St. Catherine, Jamaica
Default Audio Workshop D3 Kit

Hey guys
Has anyone tried the D3 kit from AudioWorkshop.
It looks very interesting and its only for US$60.
I want to get your opinions before I go and Buy it.

So what do you guys think of it?

http://www.audioworkshop.com.hk/index_en.htm

Thanks
Lawrence
__________________
<a href="http://www.danasoft.com"><img src="http://www.danasoft.com/sig/lawbadman.jpg" border="0"></a><div style="font-family:arial,sans-serif;font-size:11px;"><p>Sign by Danasoft - <a href="http://www.danasoft.com">For Backgrounds and Layouts</a></p></div>
  Reply With Quote
Old 6th November 2005, 10:52 PM   #2
labjr is offline labjr  United States
diyAudio Member
 
Join Date: Apr 2003
Location: MA
I was looking at that kit too. Cool little project. It doesn't appear that too many people here have built them though.

I wanted to know how to self-power the receiver chip and change the crystal to a low jitter clock circuit.

I wonder not how it compares to onboard computer sound but how well it sounds next to a good CD player or transport DAC combo. Because, in the future, I would like all my music to be on computer.
  Reply With Quote
Old 7th November 2005, 08:31 AM   #3
diyAudio Member
 
Join Date: Nov 2002
Location: HK
I have built it and it is very very good.
I don't think you can go wrong with that price.
I had trouble trying to wire the pcm2706 in self-power mode, in the end, I just replace the USB power with a TL317 5V reference from the 7.5V (original was 6.8V) feed to 1543 dac.
  Reply With Quote
Old 7th November 2005, 12:45 PM   #4
labjr is offline labjr  United States
diyAudio Member
 
Join Date: Apr 2003
Location: MA
Hi Chuck,

I thought in self power mode it needed a 3.3 Volt supply. at least that's what I think the data sheet specified. Seems strange since the USB pwers it with 5 volts correct ?

Also, did you modify the clock circuit at all?

THX
  Reply With Quote
Old 7th November 2005, 02:49 PM   #5
diyAudio Member
 
Join Date: Nov 2002
Location: HK
Yes, you are right, I did use a 3.3V but I couldn't get it to work, so I just replace the usb 5v.
I also replace the crystal with an external ocillator.
  Reply With Quote
Old 7th November 2005, 04:26 PM   #6
labjr is offline labjr  United States
diyAudio Member
 
Join Date: Apr 2003
Location: MA
Which oscillator did you use.? Did you try different ones?

Did the oscillator make a difference in the sound?

From reading an old article about PCM2702 I was under the impression that in PCM 27XX series there is a PLL circuit in the chip which takes care of clock problems, No?

THX
  Reply With Quote
Old 7th November 2005, 05:10 PM   #7
labjr is offline labjr  United States
diyAudio Member
 
Join Date: Apr 2003
Location: MA
Chuck,

I have one more question. Would you say the sound quality is good as a good CD player or just better than a computer sound card.

I don't want to build a project just to exceed the sound quality of my computer. That's pretty easy to do with any old CD player.

I want to do some serious listening of music of my CDs which I will move to my hard drive.
  Reply With Quote
Old 8th November 2005, 06:41 AM   #8
diyAudio Member
 
Join Date: Nov 2002
Location: HK
In my opinion, the sound from this dac is better than a lot of cd players.
I think this is due to TDA1543 dac and I think PCM2706 did a pretty good job on the I2S out too.
The ocillator made some difference, but replacing the usb 5v made a bigger difference.
  Reply With Quote
Old 9th November 2005, 02:58 PM   #9
ronardi is offline ronardi  Hong Kong
diyAudio Member
 
Join Date: Jul 2004
Location: HK
I'm going to build this kit too.
I got a question here. If I have a 12Mhz TCXO in hand, can I directly use it on the board to substitute the stock crystal?
__________________
Andrew Chan
  Reply With Quote
Old 10th November 2005, 05:33 AM   #10
labjr is offline labjr  United States
diyAudio Member
 
Join Date: Apr 2003
Location: MA
I guess you could. I think Chuck said the difference probably more subtle than self-powering the PCM2706 though.
  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
Idle Hands are the Devils Workshop - Non Audio, keep out of trouble projects MJL21193 Everything Else 6 8th April 2008 12:23 AM
Audio Workshop a dodgy outfit? Martin Hayes Digital Source 0 22nd October 2006 05:00 PM
M-AUDIO Firewire SOLO and Speaker Workshop Web Wolf Multi-Way 2 1st May 2006 01:21 PM
fft (Speaker Workshop) Dave Jones Multi-Way 6 28th June 2004 11:49 PM
What's in your workshop? jackinnj Everything Else 11 6th August 2003 09:32 PM


New To Site? Need Help?

All times are GMT. The time now is 07:26 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