New DAC project 24/96/192 wanted features - Page 2 - 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 26th September 2002, 12:20 AM   #11
jwb is offline jwb  United States
diyAudio Member
 
jwb's Avatar
 
Join Date: Mar 2002
Location: San Francisco, USA
Send a message via AIM to jwb
Oh wow, I just noticed that the CS43122 is a single-supply balanced-output unit. Hot stuff! Definitely the greatest pain in my last balanced DAC was providing 16 clean power supplies, and routing traces to four ICs. This should be much simpler. You don't even need an I/V stage!
  Reply With Quote
Old 26th September 2002, 01:40 AM   #12
diyAudio Member
 
Join Date: Oct 2001
Location: .
Peranders,
Have you considered including the option of displaying CD Text?
And is there any particular reason you have chosen a dac from the AKM/Crystal stable as opposed to TI/BB or AD?

ray.
  Reply With Quote
Old 26th September 2002, 07:02 AM   #13
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
Quote:
Originally posted by jwb
No-holds-barred DAC action! Yeah! That's what I like to see.

I think your price of $300 might be a little low, though. For my DAC I had to spend $80 for the PCB, and $150 just for the DAC chips. The power regulators (which I built up from discreets) also turned out to be pretty expensive.
You know, as a DIY'er, you can cut costs in many ways, also increase! Not many people can build a DAC for 300 USD but if you get free samples of the DAC's, make your own case, have the transformers, caps etc. it's possible.
__________________
/Per-Anders (my first name) or P-A as my friends call me
Super Regulator SSR03 Group buy
  Reply With Quote
Old 26th September 2002, 07:17 AM   #14
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
Quote:
Originally posted by rfbrw
Peranders,
Have you considered including the option of displaying CD Text?
And is there any particular reason you have chosen a dac from the AKM/Crystal stable as opposed to TI/BB or AD?
The answer is yes to the second question but there is one thing though: I simple like Crystal and AKM seems to be similar. Some people like tubes, other like Mr Pass' amps, some like vinyl etc. The documentation from Crystal is excellent, often very important if you don't want to do mistakes. I haven't desided yet which chip I'm going to use but one another important thing is availibility for private persons. I'm not so keen on buying lots of expensive chips in order to sell them. My general attitude is to use parts which are easy to get. That's one of the most important things for me actually.

The first question, not really, don't know much about it. Can anybody convince me? Does CD Text exist? Is it like deemphasis? 10 CD's of my 700 have it and noone newer than 10 years!
__________________
/Per-Anders (my first name) or P-A as my friends call me
Super Regulator SSR03 Group buy
  Reply With Quote
Old 26th September 2002, 07:23 AM   #15
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
Default Re: I was so wrong

Quote:
Originally posted by artnyos

What is ......... ! Maybe the Swedish doesn't translate so well.
The ... ... language is universal in this case. Everyone understands what I mean. Don't you?
__________________
/Per-Anders (my first name) or P-A as my friends call me
Super Regulator SSR03 Group buy
  Reply With Quote
Old 27th September 2002, 12:07 PM   #16
2002tii is offline 2002tii  Norway
diyAudio Member
 
Join Date: Apr 2002
Location: Norway
Peranders

Have you been stepping on someones toes lately?
Or is it artnyos who have woken up on the wrong side of the bed?

I`m looking forward to see how our dac developes.
But why use many parts?
Isn`t it clever to use as few parts as "possible" (but not fewer...)?
__________________
Regards Dan M.
  Reply With Quote
Old 27th September 2002, 12:28 PM   #17
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
Quote:
Originally posted by 2002tii
Peranders
Have you been stepping on someones toes lately?
Or is it artnyos who have woken up on the wrong side of the bed?
Both I suppose but he isn't around anymore for a long long time. Have you noticed how peaceful it is here right now? There has been an another guy who have been strong "sin bin" material but he was clever enough not to make his point of veiw public. He was a student and have apologized proberly (but his not forgotten). Even Jocko Homo and Steve Eddy are nice guys these days. Check the "sin bin" for information if you don't know the details.

Quote:
Originally posted by 2002tii
I`m looking forward to see how our dac developes.
But why use many parts?
Isn`t it clever to use as few parts as "possible" (but not fewer...)?
In this project I will use the amount of parts I feel neccessary and the most worrying thing is the EMC stuff. DAC's creates MUCH RF noise, you can't believe it! The emission is high between 100-300 MHz. This takes lot's of parts to reduce! But otherwise I won't be doing overkill. DAC's are pretty much forward, reciever, DAC output filter plus control section.

The overkill stuff are for amps (for me anyway).
__________________
/Per-Anders (my first name) or P-A as my friends call me
Super Regulator SSR03 Group buy
  Reply With Quote
Old 27th September 2002, 12:45 PM   #18
2002tii is offline 2002tii  Norway
diyAudio Member
 
Join Date: Apr 2002
Location: Norway
Hehe, I had missed the sinbin!
Better watch my mouth then...

Sounds like an interesting plan.
I think EMC is a much overlooked subject.
So now I really look forward to see how this project progress!
__________________
Regards Dan M.
  Reply With Quote
Old 27th September 2002, 01:02 PM   #19
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
EMC is a real problem in digital audio. ADC's and DAC's with S/N of 122 dB or 123 dB isn't easy stuff for a DIY'er not even a pro.

Think about it: Clock signals at 24 MHz! With fast rise times. To this work with signals below or near 1 µV.
__________________
/Per-Anders (my first name) or P-A as my friends call me
Super Regulator SSR03 Group buy
  Reply With Quote
Old 27th September 2002, 01:13 PM   #20
Banned
 
Join Date: Feb 2002
Location: Dallas,Texas
Default To this work with signals below or near 1 µV.

Yes like 0.1 nanovolts perhaps.............
  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
Preamp with features! jwb Solid State 42 15th June 2009 05:22 AM
Amp design w/ Quad 303 features hahfran Solid State 3 26th December 2007 01:08 PM
Features in Class-D modulator dusfor99 Class D 2 24th October 2006 03:02 PM
TDA1554Q Features Wilson2004 Chip Amps 8 15th July 2004 06:28 PM


New To Site? Need Help?

All times are GMT. The time now is 07:40 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