Well DAC 1 will cost USD 1000 for the proper implementation. If one use the USB to SPDIF converter, then the clock has to be properly done up, independent suspension, power supply. I just discovered my PCM 2902 usb to spdif converter (using computer power supply thru USB) has 500 ps jitter, as compared to 20 ps reference.

I am almost tempted to get that JVC on the upcoming members day at jusco.

This post has been edited by ccschua: Oct 20 2008, 06:41 PM

Y.C.,
I was not aware that the PS1 is still on sale there! Hopefully it's not a 'look alike' SONI or SUNNY Playstation no?
The best price I saw in lelong was like RM160..negotiable.
Nope, did not mod mine. Too much hassle lah! Even the JVC mods also, I am agreeing with you. Might as well buy that Sansui CDP!
I have not come across anything similar with PS2 though...

I've been reading the diyaudio thread about this project as well. First, have to get the boombox. Can't find one in jusco mid valley. Will try wangsa maju this weekend.



My friend and ! will be interested. Just let us know the budget. Cheers!

This post has been edited by flyboi: Oct 22 2008, 09:03 AM

Great! That's two, three to include me

i am too.hehe

ok. thats four! will revert next week. will meet the guy this weekend to get initial quotation.

hope the price is not high, otherwise I would just consider a wooden board.

ccschua,
a wooden board would be a good alternate choice.

So, anyone get the boombox by now?
Any update on the chasis? jazzy?

Nothing on the chassis yet.. weekend schedules fully occupied

What about the disc clamp?.. will that be separate from chassis quote?

I will try to include the disc clamp in the package too..

That's called a puck. there is magnetic and non magnetic type.



This post has been edited by ccschua: Oct 26 2008, 01:14 PM

I am aware of the 'puck' ccschua

Updated the pdf at page 1 on the components required.

I am placing order for the

1. capacitors and resistors. No black gates, only panasonic. resistor is Vishay Dale.
2. Voltage regulator. AC in 25V and DC out 8V

Who knows the source for Hammond Transformer 2x25V

I am using it for transport.

This post has been edited by ccschua: Oct 26 2008, 06:05 PM

Is that urs in the picture?

Not really. but it would serve the job, I am thinking of putting the servo on a wooden board, then have it tied to the marble. The servo needs about 15kg of mass to stabilize !!

Something about the PUCK.
------
Hi,

http://www.audiostereo.pl/zalaczniki/1067737_1.jpg

CD tracks are 1.6 micron apart, that's 625 tracks in each mm, CD transports use a lens with focussing comparable to a good microscope, both the focussing and tracking need to be extremely accurate (1 micron / 0.16 micron or better, a hair is about 100 micron, you'll get the point...)

If guess it's difficult for a magnetic puck not influence the tiny coils controlling the lens. (And even if the magnetic field was perfectly symmetric: the lens is constantly moving in that field because of servo corrections, CD eccentricity, I think that could still influence the coils.)

I almost don't dare to say this here: even a static field of a non-magnetic puck has an influence. If we demagnetize (remove static fields) screw-on type pucks, we can hear an improvement (can be heard easily in a very good system). Of course you won't hear a difference if your CD or other parts are static/magnetic too.
Observed differences are similar (higher resolution, more variety in timbres, more micro and macro dynamics, more quiet, silent background). It's time for some serious jitter measurements...

Btw. we distribute the Shigaraki transport in two versions with magnetic and screw type puck, screw type is always preferred in A/B comparisons. However some find the difference small and choose for the convenience of the magnetic puck (and lower price).

But there are more reasons why the non-magnetic puck sounds different. For our research (we're trying to make the best possible CD player we've created and tested a large range of pucks and spindles (all screw-on type), and everything in the design seems to matter, not only weight, weight distribution and pressure, but also the contact points/surfaces with the CD, materials, etc. It all influences the vibrations (and so the jitter pattern and the sound).

On the other hand, I don't want to exaggerate the problem of a magnetic puck, there are good transports with magnetic pucks. Usually there are bigger problems in CD-transports (also the expensive ones). The puck is not the weakest link.

And all of this wouldn't be a problem if we could get rid of the jitter at the DAC, but I haven't heard that in practice yet. It would be very cool if we don't need ridiculously expensive transports anymore to get the best from CD.

source

http://www.diyaudio.com/forums/showthread....ht=#post1330555

---

Added on October 27, 2008, 7:39 amhere is what it says about CDPRO
--
Here are my experiences with the CD PRO (with a few other persons we evaluated different mechanisms for developing a transport):

The mechanism of de CD PRO is very good, altough not as perfect as the VRDS NEO, but you can't buy these for a sensible price (and the electronics of the VRDS probably limits it's capabilities).

The laser is ok, but unfortunately not balanced, which means that focus- and tracking corrections influence each other more than neccesary. The corrections introduce jitter that can't be removed. A cheap Sanyo laser does this better.

The weakest link is the circuit board, and I guess it's almost impossible to modify properly. The clock can be improved but there are far worse problems on this board: the 4-layer layout and it's components.

Btw: I notice many people focus on the clock, but usually there's more to gain elsewhere (solving hf problems, power supply, layout etc.). Besides that: most clocks we've evaluated introduced new hf-problems, new jitter in other parts of the spectrum. I think "Plug-and-play" clocks are a gamble, proper implementation is critical.

source

http://www.diyaudio.com/forums/showthread....832#post1173832

This post has been edited by ccschua: Oct 27 2008, 07:41 AM

Hi guys!

Manage to get 1 EZ31 at Mydin Pudu and that is the last stock. Jusco in wangsa maju also has no stock. Still looking for another one for friend. An ideas which shop has it?

---

Added on October 27, 2008, 8:38 amSo, how is the sound so far? What dac do u use with this transport?



This post has been edited by flyboi: Oct 27 2008, 08:38 AM

This is news! The EZ31 no stock! Must be bought by forumers that stumbled by this thread..

did you got the hammond tranny or something equivalent....???