More info about the project

Posted by Danny T (A) on September 4, 2003 at 02:41:56

In Reply to: Re: My final CD-player posted by griboon on September 3, 2003 at 17:17:01:

I bought the kit from Benny at http://www.diyparadiso.com
the kit contains the CD-Pro2 transport, the different PCB's and all of the components, but no case.
The case was custom made for me by http://www.par-metal.com

The original PCB of the tda1541 DAC is made for a cs8412 and one tda1541, but the CD-Pro2 transport has a i2s output that can be directly connected to the tda1541 (no need for a cs8412), so I changed the circuits for a second tda1541a in parallel, but with its own capacitors and power supplies.
Two tda1541 compared to one give you an extra 6db, more dynamics, better sound overall.
See http://users.podolsk.ru/boga/DAC.html for connecting two tda1541 with eachother.
I also changed the CCS for the 5842 tubes to a Hawksford cascode CCS,
tried different coupling caps, settled for the Mundorf silver PIO.

Diyparadiso is now working on a revision of the CD-player project,
that revision will have:
- a pcb for two tda1541
- a solution for the high frequency junk that every non-oversampling DAC has, so that the passive filter isn't needed anymore. The sine waves at 20k will be nice sinewaves, no rectangles, description of this problem at bottom of: http://www.diyparadiso.com/dac1.htm
- he's also looking for a case to include in the kit.

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Follow Ups Full Thread

Topic - My final CD-player - Danny T 02:57:01 09/03/03 (24)

Re: My final CD-player/DAC trouble! - danzan 04:20:46 09/04/03 (2)

Re: My final CD-player/DAC trouble! - Danny T 16:07:48 09/04/03 (1)

Re: My final CD-player/DAC trouble! - danzan 23:10:08 09/04/03 (0)

Hawksford current source? - Allen Wright 01:46:19 09/04/03 (4)

Re: Hawksford current source? - Danny T 15:29:27 09/04/03 (3)

Thanks, Danny! - Allen Wright 02:20:21 09/05/03 (2)

Another link - Gary P 05:09:44 09/05/03 (1)

Gary can't find rev 4 and 5 on your pages.. nt - Bas Horneman 06:48:07 09/05/03 (0)

Re: My final CD-player - griboon 17:17:01 09/03/03 (1)

More info about the project - Danny T 02:41:56 09/04/03 (0)

try this - nl 12:45:59 09/03/03 (3)

Re: try this - Danny T 15:26:33 09/03/03 (2)

smaller r values - nl 17:36:47 09/03/03 (1)

Re: smaller r values - Danny T 16:21:37 09/04/03 (0)

What do you use for clamping the CDs? - Carlos 07:47:37 09/03/03 (1)

Re: What do you use for clamping the CDs? - Danny T 09:20:53 09/03/03 (0)

Re: My final CD-player - keto 06:23:57 09/03/03 (2)

Only so much resolution - Jeffm 12:11:54 09/04/03 (1)

yes, SACD.... - keto 14:19:23 09/04/03 (0)

Re: My final CD-player - Derick 04:32:12 09/03/03 (2)

Re: My final CD-player - Danny T 09:13:00 09/03/03 (1)

Re: Thanks Danny! (nt) - Derick 14:56:14 09/03/03 (0)

Wow..excellent Danny..I'm jealous.. - Bas Horneman 03:18:00 09/03/03 (1)

That's no problem, thanks. (nt) - Danny T 09:07:56 09/03/03 (0)

Follow Ups

More info about the project - Danny T 02:41:56 09/04/03 (0)

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