CD-ROM clock upgrade?

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LennyK said:
I know, this is very crazy (I think).
Is it posible at all to improve clock in compuer CD-ROM (used as transport with external DAC and PSU) with clock like this:
http://www.diyaudio.com/forums/showthread.php?s=&threadid=6194&highlight=elso+clock
or something similar?

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There in not much room; but you can route the SPDIF output outside the computer and have the signal relocked and routed to the sound card via 75R connection. The latter makes a big difference!
 
You didn't undrerstand correctly. I don't want to upgrade cd-rom in my computer. I want to upgrade cd-rom as external cd player (cd-rom with separate DAC and PSU).

Measuring jitter (jitter of cd player) with comp sound card that's my second question. But, ok, lets forgot about it. Main problem is that cd-rom-player :). Maybe you could post links about relockig audio data?

Lenny
 
SONY CDROM clock upgrade & relock S/PDIF

I'm planning to upgrade the clock & reblock S/PDIF output for a SONY CDROM. It's chip set is MT1136AE & MT1198AE. The clock rate should be 33.8Mhz. The schematic is base on http://netcity6.web.hinet.net/UserData/prbetech/DSIX_mod/DSIX-1.htm. The oscillator will be replaced by Kwak clock to save money.

Since I didn't have experience to handle digital circuit, I want to get the connection diagram of MT1136AE & MT1198AE. Is there anybody can help me?
 

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LennyK said:
I know, this is very crazy (I think).
Is it posible at all to improve clock in compuer CD-ROM (used as transport with external DAC and PSU) with clock like this:
http://www.diyaudio.com/forums/showthread.php?s=&threadid=6194&highlight=elso+clock
or something similar?

Is it a simple method to measure jitter? Maybe with computer music card?

regards

Lenny


Hi

Measuring jitter is not easy (to me it is, but not everyone has an HP53310A in their lab)

We designed a DAC with a diagnostic (sound) output

http://members.chello.nl/~m.heijligers/DAChtml/dactop.htm

which may help,

regards
 
CD-ROM clock upgrade

I know that using DAC is the best way to improve the sound source. I already installed a DAC kit with CS8412 & PCM1710. However I'm not quit satisfactory with the result. In compare with SONY DVP900V's internal DAC, it can't win:mad: . As a DIY guy, I need a better digital source to prove the power of DAC. So I want a clean source. From Internet, I get a kit to control a IDE CDROM (/w remote control). Since I can do anything to a CDROM, it will be my experiment to reclock the player. If okay, I'll reclock my DVD player.:idea:
 
Re: CD-ROM clock upgrade

As a DIY guy, I need a better digital source to prove the power of DAC. So I want a clean source. From Internet, I get a kit to control a IDE CDROM (/w remote control).
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Where did you get the kit and how much is it?:cool:
 

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Re: cdrom controller w/remote

eddyhk said:
I buy it from a Taiwan site. The price is TWD1380 & transport fee TWD820. Total is around USD64.-. It is a semi-completed kit. It had basic function : Play, eject, next, preious, programable play mode, remote controller and LED & LCD status display.

http://www.my3c.net/product/detail.asp?ky=&pid=1354&sgid=104&gid=7&gid2=&Sort=&Price=

You can contact them via email service@my3c.net if you can't read chinese character. They can read english.

Hi,
Thanks for the info.
I just got an external NEC SCSI CDROM drive I was going to play with, see how good it sounds. Do you think this kit would work with what I have? How does it interface to the CDROM?
Or, should I just email the company directly?

Thanks for any info you can give me.

Randy
 
Re: CD-ROM clock upgrade

eddyhk said:
I know that using DAC is the best way to improve the sound source. I already installed a DAC kit with CS8412 & PCM1710. However I'm not quit satisfactory with the result. In compare with SONY DVP900V's internal DAC, it can't win:mad: . As a DIY guy, I need a better digital source to prove the power of DAC. So I want a clean source. From Internet, I get a kit to control a IDE CDROM (/w remote control). Since I can do anything to a CDROM, it will be my experiment to reclock the player. If okay, I'll reclock my DVD player.:idea:


Hi

I did not want to push you in the direction of building our DAC, I refer to it as it has a way to measure drive jitter incorporated.

regards
 
Re: cdrom controller w/remote

eddyhk said:
I buy it from a Taiwan site. The price is TWD1380 & transport fee TWD820. Total is around USD64.-. It is a semi-completed kit. It had basic function : Play, eject, next, preious, programable play mode, remote controller and LED & LCD status display.

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Thanks. Can you please tell me the method of interfacing with a drive? Is it a simple IDE connection, or something else?

Also, do you have to join the 3cC club before you can order? The basket doesn't work!
 

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Re: Buy CDROM controller kit

[I had registered at the 3cc club before purchase the kit.

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I registered and tried to purchase having filled the form in but all I got was a microsoft ????? POP UP. Also the email address doesn't work and emails were returned. What is the secret of your success??
 
my3c.net problem

I'm not sure what is happen. Most likely your browser (IE) is not released the latest patches. I had tried to use Netscape to access their site and can't complete the purchase function. Yet I can send email to them. You can try their contact page http://www.my3c.net/contact/default.asp?
Or you can send your contact email to eddy@5687.net. I can forward your message to them.:cannotbe:

Here was some more information for using CDROM as a CD player http://www.review33.com/avforum/forum_message.php?topic=67030719041717
 
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