PC jukebox - 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 30th September 2005, 01:46 AM   #1
cougarz is offline cougarz  Italy
diyAudio Member
 
Join Date: Sep 2005
Default PC jukebox

Hello from italy!
I'm thinking to a good audiophile source for my hifi car system. I'm planning to buy a mini-itx computer, put there a good soundcard with optical out and let the digital sound to be converted to analog by my alpine pxa h900 dac / signal processor.
The wav files i have are good enough i guess, created by plextor premium U usb burner and 12volts Pb battery power supply.
Considering that in car i use burned cds (original at home!!) with state-of-the-art alpine cd player (f1 status 7990) , do you think i will lose quality listening by computer way instead cds classical way? Do you know software/pc audio card to get the best results possible without wasting money for multi-effect cards or sophisticated software?
That means: i need to know if does exist a RAW quality player and a RAW quality sound card. Just take the wav and throw it out directly as it is in sp/dif optical output doing anything more. The digital processor will think to all the equalisation etc.

What do you think???
  Reply With Quote
Old 3rd October 2005, 05:05 AM   #2
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Blog Entries: 6
Hi,
take a look at my digital music server thread, no reason why it can't work with nano/mini itx mobo particularly since you aren't also using it as a pvr as I am.

Incidentally this server replaced my old PS Audio Lambda Drive and I think it probably outperforms it in some ways and is a lot more convenient.

The sound quality is every bit as good as the Lambda was to the best of my recollection and just blows the sony sacd player I sometimes use as a cd transport out of the water.

Kevin
  Reply With Quote
Old 5th October 2005, 10:04 PM   #3
cougarz is offline cougarz  Italy
diyAudio Member
 
Join Date: Sep 2005
thank you!
I read the long thread, but i only understood some parts. My issue is the following:
i have a car with hi-end oriented audio system. Actually the audio chain is the following:

alpine f1 status 7900 cd player ->optical output->pxa700 digital processor equalizer/ dac, brax x2400 amplifier, scan speak revelator 2 way speakers.

The digital processor has 3 optical SP/DIF inputs so i want to try audio computer source:
mini ITX computer ->USB output ->something in behind ->optical output ->digital processor etc...

alpine F1 status 7990 is probably the best sounding car source outthere. I want reach the same digital quality. Actually i have a cheap terratec aureon 5.1 with SP(DIF optical output but maybe the digital signal is not good enough, becouse i hear difference in bass (less bass in audio pc than in cd player!!)

Sorry but i don't know what EMU 404 , ASIO, etc are..

Bye
Paolo
  Reply With Quote
Old 6th October 2005, 02:50 PM   #4
Schaef is offline Schaef  United States
diyAudio Member
 
Join Date: Jan 2001
Location: Cuyahoga Falls, OH
Why not just get a mini-ITX with digital audio out, that way you can skip the USB portion? I believe at least one of the models offers digital output. You can look on www.mini-itx.com and see what your options are and purchase one if you want. That'll simplify at least one portion of your project.

As to the differences, I'm one of those "uneducated" people that doesn't believe in the whole crap of CD-Rs sounding different from originals and things like that (and digital audio cables sounding different as well) so I can't really help on that front.
  Reply With Quote
Old 6th October 2005, 05:03 PM   #5
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Blog Entries: 6
Unfortunately I can't educate you on all of the technical details in building a music server, however there is a lot of information on the web for this. I had to learn it the hard way and I am still learning even now - I am by no means an expert in any sense.

I suggest googling the following items:

ASIO which provides a way to avoid using most of the windows audio drivers and dll's - reduces latency which is not important here, but also avoids the resampling issues with the windows mixer and volume controls which unfortunately degrade the quality of the pcm stream.

FLAC which is free lossless audio compression - an algorithm which saves about 25 - 40 % of the space required for an uncompressed wave file.

EAC exact audio copy which makes bit perfect copies of cds if configured properly and used with a good drive.

WinAmp/Foo2000/QCD which are media players which all support both ASIO and FLAC. QCD is perhaps the easiest to set up for this. Foo is promising.. I prefer QCD to the others.

AC-97 chipsets will usually resample to 48kHz in hardware and if you are using spdif output you want to avoid this as it degrades the quality of streams sampled at 44.1kHz. I had a lot of problems with this particular issue as the resampling prevented me from playing back properly HDCD encoded material. HDCD is now my litmus test for how much tinkering occurs to the pcm stream during playback - if the HDCD subcode is intact (i.e HDCD is recognized by the external decoder) then it is pretty likely that the stream is unmodified.

I don't recommend USB due to latency issues - I had a number of problems with poor playback via a USB stereo codec in winXP.
Via Envy24 codecs are known to support asio and not to resample when it is not desired. I am using the M-Audio 2496 with excellent results - I am also told that the Chaintek AV-710 (right model #??) is good for spdif output.

Check this out for a good car PC possibility:
http://www.mini-box.com/site/index.html

Hope this is helpful - do the research and don't accept anything at face value without checking it out!

Kevin
  Reply With Quote
Old 19th October 2005, 06:18 PM   #6
cougarz is offline cougarz  Italy
diyAudio Member
 
Join Date: Sep 2005
Hello
i studied better mini itx motherboards. The one i want to buy can be configured with a jumper, so video out becomes audio sp/dif coaxial out. How i can convert it to optical? Any circuitry drawing out there?
Bye

Paolo
  Reply With Quote
Old 19th October 2005, 07:36 PM   #7
diyAudio Member
 
Join Date: Jun 2004
Location: Italy
Quote:
Originally posted by cougarz
Hello
i studied better mini itx motherboards. The one i want to buy can be configured with a jumper, so video out becomes audio sp/dif coaxial out. How i can convert it to optical? Any circuitry drawing out there?
Bye

Paolo

Here http://www.epanorama.net/documents/audio/spdif.html you find any kind of conversion schematics

In Italy you find the TORX173 from Distrelec online store.

Also ready-made commercial converters exist..

ciao
  Reply With Quote
Old 19th October 2005, 10:01 PM   #8
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Blog Entries: 6
Use a spdif transformer to break ground loops, coaxial actually performs better than optical. See my media server thread for information on Schott and Newava transformers you can buy.

Kevin
  Reply With Quote
Old 25th November 2005, 03:07 AM   #9
diyAudio Member
 
ozone_stink's Avatar
 
Join Date: Jan 2005
Location: Montreal
Quote:
Originally posted by kevinkr
Unfortunately I can't educate you on all of the technical details in building a music server, however there is a lot of information on the web for this. I had to learn it the hard way and I am still learning even now - I am by no means an expert in any sense.

I suggest googling the following items:

ASIO which provides a way to avoid using most of the windows audio drivers and dll's - reduces latency which is not important here, but also avoids the resampling issues with the windows mixer and volume controls which unfortunately degrade the quality of the pcm stream.

FLAC which is free lossless audio compression - an algorithm which saves about 25 - 40 % of the space required for an uncompressed wave file.

EAC exact audio copy which makes bit perfect copies of cds if configured properly and used with a good drive.

WinAmp/Foo2000/QCD which are media players which all support both ASIO and FLAC. QCD is perhaps the easiest to set up for this. Foo is promising.. I prefer QCD to the others.

AC-97 chipsets will usually resample to 48kHz in hardware and if you are using spdif output you want to avoid this as it degrades the quality of streams sampled at 44.1kHz. I had a lot of problems with this particular issue as the resampling prevented me from playing back properly HDCD encoded material. HDCD is now my litmus test for how much tinkering occurs to the pcm stream during playback - if the HDCD subcode is intact (i.e HDCD is recognized by the external decoder) then it is pretty likely that the stream is unmodified.

I don't recommend USB due to latency issues - I had a number of problems with poor playback via a USB stereo codec in winXP.
Via Envy24 codecs are known to support asio and not to resample when it is not desired. I am using the M-Audio 2496 with excellent results - I am also told that the Chaintek AV-710 (right model #??) is good for spdif output.

Check this out for a good car PC possibility:
http://www.mini-box.com/site/index.html

Hope this is helpful - do the research and don't accept anything at face value without checking it out!

Kevin
I can vouch for EAC. I just made a copy of an HDCD, placed this copy into my Rotel RCD-02 and guess what? -The copy was detected by the Rotel as also being HDCD. I'm using a TDK 880N DVD 8X burner.

Forgive me if this is 'nothing special'. -I just didn't expect it to work.

Cheers.
  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
Rowe AMI jukebox amp richfoub Tubes / Valves 10 3rd January 2011 02:32 AM
Jukebox relay? Austin Duggan Everything Else 6 19th April 2009 10:52 AM
DIY Jukebox!! ThSpeakerDude88 Tubes / Valves 36 30th December 2008 04:26 PM
Help With Jukebox Amp HYDEBEE Tubes / Valves 2 30th December 2005 11:03 AM
Wav jukebox dhaen Everything Else 20 30th May 2003 09:55 AM


New To Site? Need Help?

All times are GMT. The time now is 10:55 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