Mood-Lab NON-OS dac - 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 23rd May 2006, 02:43 PM   #1
reMC is offline reMC  Netherlands
diyAudio Member
 
Join Date: Nov 2004
Location: Netherlands
Send a message via Skype™ to reMC
Default Mood-Lab NON-OS dac

Any experience with the Mood-Lab (under construction) dac? I'm considering buying it. Price is $199 for the basic version "concept" with 1 digital input and $399 for "dice", which has more digital inputs includes Toslink optical, coaxial and USB input for computer.

Click the image to open in full size.

I really like the minimal concept (no input buffer, no reclocking) while the lay-out allows it to experiment with components.
  Reply With Quote
Old 23rd May 2006, 03:39 PM   #2
diyAudio Moderator Emeritus
 
Bas Horneman's Avatar
 
Join Date: Apr 2002
Location: The Netherlands
Blog Entries: 18
looks a little overpriced to me.
  Reply With Quote
Old 23rd May 2006, 04:12 PM   #3
reMC is offline reMC  Netherlands
diyAudio Member
 
Join Date: Nov 2004
Location: Netherlands
Send a message via Skype™ to reMC
Quote:
Originally posted by Bas Horneman
looks a little overpriced to me.
Care to tell why? I think it's the cheapest commercial available NON-OS dac, isn't it? Furthermore, I have no idea how it sounds! Do you?
  Reply With Quote
Old 23rd May 2006, 04:32 PM   #4
diyAudio Moderator Emeritus
 
Bas Horneman's Avatar
 
Join Date: Apr 2002
Location: The Netherlands
Blog Entries: 18
Quote:
Care to tell why? I think it's the cheapest commercial available NON-OS dac, isn't it? Furthermore, I have no idea how it sounds! Do you?
Sure. I look at it from the point of view of a diy'er. I don't see fancy casework. And looking at the parts I arrive at a price of say 40-90 euro's.

I have an idea how it sounds but not exactly ofcourse, since I have not heard that particular one. I have heard 3 types of TDA 1543 nos with CS8412 receivers and I liked them all.

2 of them use 8*1543's paralled and the other was with a single TDA1543.

But for a commercial product it is not that expensive ofcourse. There is the pcb design costs. Dealer markup...etc. etc.
  Reply With Quote
Old 23rd May 2006, 04:39 PM   #5
reMC is offline reMC  Netherlands
diyAudio Member
 
Join Date: Nov 2004
Location: Netherlands
Send a message via Skype™ to reMC
Quote:
Originally posted by Bas Horneman

2 of them use 8*1543's paralled and the other was with a single TDA1543.
Which one with a single TDA1534 did you hear? How did you like it compared to the 8 stacked dac's?
  Reply With Quote
Old 23rd May 2006, 04:41 PM   #6
diyAudio Member
 
dsavitsk's Avatar
 
Join Date: Jan 2005
Location: Hartford
Quote:
Originally posted by Bas Horneman
looks a little overpriced to me.
Just a bit.


Quote:
Originally posted by reMC


Care to tell why? I think it's the cheapest commercial available NON-OS dac, isn't it? Furthermore, I have no idea how it sounds! Do you?
Well, the layout is not optimal -- the PS is poorly done, the IV section should be closer to the tda1543, I have doubts about a carbon resistor for the PLL, the DAC chip is not decoupled well, if at all, the spdif input scheme is not so good, and socketing those chips is not a great idea here -- it makes sense in prototyping, but there is no reason to remove them. Also, the output impedence will be very high, so you will need to run it into an amp with an input impedence of at least 25K, if not 50K.

This doesn't mean it will sound horrible, but the tda1543 is very sensitive to the quality of the PS, and you can find better commercial versions with essentially the same schematic that will sound better. Moreover, you could build this better on stripboard for about $40-50.

-d
  Reply With Quote
Old 23rd May 2006, 04:54 PM   #7
reMC is offline reMC  Netherlands
diyAudio Member
 
Join Date: Nov 2004
Location: Netherlands
Send a message via Skype™ to reMC
Thanks for the feedback!

Quote:
Originally posted by dsavitsk

the DAC chip is not decoupled well


What's missing there?

Quote:
the spdif input scheme is not so good
Again, what's wrong? Are you suggesting a input buffer? It's just that i'm glad this design doesn't have it

Quote:
And you can find better commercial versions with essentially the same schematic that will sound better. -d
I'm interested! Examples?
  Reply With Quote
Old 23rd May 2006, 05:39 PM   #8
diyAudio Member
 
dsavitsk's Avatar
 
Join Date: Jan 2005
Location: Hartford
Quote:
Originally posted by reMC
What's missing there?
The 1543 likes a high quality small value film cap right on the power pin, and an electrolytic in the 220uF-470uF range nearby.

Quote:
Originally posted by reMC
Again, what's wrong? Are you suggesting a input buffer? It's just that i'm glad this design doesn't have it
Or an input transformer -- it does a world of good.


Quote:
Originally posted by reMC
I'm interested! Examples?
http://www.gr-research.com/components/lite_dacs.htm

This is cheaper and corrects some of the issues. There are still some good modifications that can be done to this for cheap and it is missing the input stuff, but it is really cheap.
  Reply With Quote
Old 24th May 2006, 04:35 PM   #9
reMC is offline reMC  Netherlands
diyAudio Member
 
Join Date: Nov 2004
Location: Netherlands
Send a message via Skype™ to reMC
Thanks for the feedback, but I'm really searching for versions with 1 TDA1543, passive I/V and no reclocking!

Anyone?
  Reply With Quote
Old 24th May 2006, 07:26 PM   #10
diyAudio Member
 
dsavitsk's Avatar
 
Join Date: Jan 2005
Location: Hartford
Well, you can buy Scott Nixon's kit and get the $50 worth of parts for $100. http://www.scott-nixon.com/dac.htm
  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
Tune the sound to the recording, or your mood . . . rick57 Solid State 16 25th February 2003 06:28 AM
Shakespeare in Bad Mood Jay Everything Else 10 20th February 2003 08:26 AM


New To Site? Need Help?

All times are GMT. The time now is 04:28 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