CD ROM drive as a transport?

zebra100 · 4th September 2009, 10:51 PM

Well,

I feel the need to start looking at my next project. I am exploring the possibilities of making a CD transport using a CD ROM drive as the heart of the system. How easy would this be? I know that I would need the basic controls (Play/Pause/Stop/Skip/Track up/down, some sort of display and either S/PDIF or Bitstream out. Are their any kits available anywhere?

Chris.

mikesnowdon · 5th September 2009, 02:00 PM

www.dantimax.dk

Buckapound · 5th September 2009, 02:22 PM

Try this link on eBay:

http://cgi.ebay.com/CDROM-controller...d=p3286.c0.m14

This is an easy to use and functional product, and works fine with most, but not with all CD-ROM drives. The seller's pretty helpful and responsive and has a thread in the Vendor's Bazaar area:

CDROM control KITs VFD version

Note that getting a digital audio output requires intercepting the signal before the onboard DAC. There's some discussion of this on the thread.

--Buckapound

audio-kraut · 5th September 2009, 02:48 PM

Most if not all - except slimline - cd roms have digital output. No problem to to get a two pin cable to run it straight to a rca jack.

http://eshop.diyclub.biz/product_inf...roducts_id=436

wwenze · 5th September 2009, 03:25 PM

"Note on HDR-2 (2 pin header) interface used in some PC products:
Many modern PC CD-ROM drives and some soundcards (SB32, AWE32, etc.) have a two pin digital output connector in the back of the drive and they sometimes call that interface S/PDIF. Unfortunately the electrical signal which comes from it is not exactly what is described in S/PDIF specifications. The data format is exactly the same, but the signal is TTL level (5Vpp) signal instead of the normal 1Vpp signal. The output level might be selected to make the interfacing to other digital electronics easy when signal is travelling inside the computer (the normal output driver system and input amplifiers can be avoided). The downnside of this is that you need to build some electronics to make the signal from the CD-ROM drive to match what normal S/PDIF equipments expect."

http://www.epanorama.net/documents/audio/spdif.html

audio-kraut · 6th September 2009, 01:43 AM

I run the signal from various cdrom drives that I have built into a behringer src2496 and have not had any problems with overloading the inputs.

stickinsect · 6th September 2009, 05:32 PM

You might find a NEC Multispin 602 external CD rom drive on Ebay and then modify it.

RamAUDIO · 5th January 2010, 08:30 AM

what will be the output quality of audio ? Is it a diy just for fun .

4th September 2009, 10:51 PM	#1
zebra100 diyAudio Member Join Date: May 2008	CD ROM drive as a transport? Well, I feel the need to start looking at my next project. I am exploring the possibilities of making a CD transport using a CD ROM drive as the heart of the system. How easy would this be? I know that I would need the basic controls (Play/Pause/Stop/Skip/Track up/down, some sort of display and either S/PDIF or Bitstream out. Are their any kits available anywhere? Chris.

5th September 2009, 02:00 PM	#2
mikesnowdon diyAudio Member Join Date: Aug 2007	www.dantimax.dk __________________ www.drugfreeworld.org

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5th September 2009, 02:22 PM	#3
Buckapound diyAudio Member Join Date: Feb 2006 Location: Chicago, IL	Try this link on eBay: http://cgi.ebay.com/CDROM-controller...d=p3286.c0.m14 This is an easy to use and functional product, and works fine with most, but not with all CD-ROM drives. The seller's pretty helpful and responsive and has a thread in the Vendor's Bazaar area: CDROM control KITs VFD version Note that getting a digital audio output requires intercepting the signal before the onboard DAC. There's some discussion of this on the thread. --Buckapound

5th September 2009, 02:48 PM	#4
audio-kraut diyAudio Member Join Date: Apr 2004 Location: 12km off the alaska highway in northern BC	Most if not all - except slimline - cd roms have digital output. No problem to to get a two pin cable to run it straight to a rca jack. http://eshop.diyclub.biz/product_inf...roducts_id=436

5th September 2009, 03:25 PM	#5
wwenze diyAudio Member Join Date: Mar 2008	"Note on HDR-2 (2 pin header) interface used in some PC products: Many modern PC CD-ROM drives and some soundcards (SB32, AWE32, etc.) have a two pin digital output connector in the back of the drive and they sometimes call that interface S/PDIF. Unfortunately the electrical signal which comes from it is not exactly what is described in S/PDIF specifications. The data format is exactly the same, but the signal is TTL level (5Vpp) signal instead of the normal 1Vpp signal. The output level might be selected to make the interfacing to other digital electronics easy when signal is travelling inside the computer (the normal output driver system and input amplifiers can be avoided). The downnside of this is that you need to build some electronics to make the signal from the CD-ROM drive to match what normal S/PDIF equipments expect." http://www.epanorama.net/documents/audio/spdif.html

6th September 2009, 01:43 AM	#6
audio-kraut diyAudio Member Join Date: Apr 2004 Location: 12km off the alaska highway in northern BC	I run the signal from various cdrom drives that I have built into a behringer src2496 and have not had any problems with overloading the inputs.

6th September 2009, 05:32 PM	#7
stickinsect diyAudio Member Join Date: Aug 2005	You might find a NEC Multispin 602 external CD rom drive on Ebay and then modify it.

5th January 2010, 08:30 AM	#8
RamAUDIO diyAudio Member Join Date: Jan 2010	what will be the output quality of audio ? Is it a diy just for fun .

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