non os for cdp without pcb trace cutting - Page 2

jean-paul · 19th April 2004, 10:03 PM

Still with 4 x TDA1541A paralleled ?

Bricolo · 19th April 2004, 10:09 PM

My player uses a separate chip for the SPDIf out, driven from the decoder's I2S output: PCF3523

Bernhard · 19th April 2004, 10:10 PM

Quote:

Originally posted by jean-paul
Still with 4 x TDA1541A paralleled ?

Yes, and maybe S2.

I know it is difficult, but with the analyzer I can find combinations of chips that give a better result as a single chip.

could be that I built 100x160mm cards with 1 chip each.

So there is no such limitation in the number of paralleled chips

jean-paul · 19th April 2004, 10:41 PM

That'll be a very expensive cdplayer. But you'll be tha masta in PCB design if you succeed

Give it a go with paralleling as you desperately want to try it. I don't like the sonical results of paralleling despite the possible smaller distortion it'll give ( after a few years of matching 4 chips out of 100 )

You could consider making a new wafer for TDA1541A. Just joking, Bernhard.

First try a better clock if you haven't done so already. I am curious what a better clock will show on the analyzer.

Bernhard · 19th April 2004, 10:49 PM

What about silver mica for the original clock ?
Is maybe more stable than the smd stuff.

zygibajt · 19th April 2004, 10:56 PM

Good clock is a MUST!

How true.

Bartek

jean-paul · 20th April 2004, 03:58 PM

Quote:

Originally posted by Bernhard
What about silver mica for the original clock ?
Is maybe more stable than the smd stuff.

It's not in the caps but in the type of oscillator used.

19th April 2004, 10:03 PM	#11
jean-paul diyAudio Moderator Emeritus Join Date: Sep 2002 Location: The Netherlands	Still with 4 x TDA1541A paralleled ? __________________ It's only audio

19th April 2004, 10:41 PM	#14
jean-paul diyAudio Moderator Emeritus Join Date: Sep 2002 Location: The Netherlands	That'll be a very expensive cdplayer. But you'll be tha masta in PCB design if you succeed Give it a go with paralleling as you desperately want to try it. I don't like the sonical results of paralleling despite the possible smaller distortion it'll give ( after a few years of matching 4 chips out of 100 ) You could consider making a new wafer for TDA1541A. Just joking, Bernhard. First try a better clock if you haven't done so already. I am curious what a better clock will show on the analyzer. __________________ It's only audio

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19th April 2004, 10:09 PM	#12
Bricolo diyAudio Member Join Date: Nov 2002 Location: Grenoble, FR	My player uses a separate chip for the SPDIf out, driven from the decoder's I2S output: PCF3523

19th April 2004, 10:49 PM	#15
Bernhard diyAudio Member Join Date: Apr 2002 Location: Munich	What about silver mica for the original clock ? Is maybe more stable than the smd stuff.

19th April 2004, 10:56 PM	#16
zygibajt diyAudio Member Join Date: Jun 2003 Location: Wroclaw	Good clock is a MUST! How true. Bartek

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