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Old 18th July 2008, 02:31 PM   #1
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Default Pcm56 Nonos

Modded a few Tda1541 based players to nonoversampling and I love the sound.
Now I would like to try with an old Sony cdp M49 with Burr Brown PCM56 dacs. It has CXD25009 digital signal processor, CXD2551P digital filter, MC74HCU04N inverter + 2 PCM56. I wonder if I simply could bypass the filter but it seems a little more complicated...
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Old 18th July 2008, 05:01 PM   #2
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I would recommend a CS8412...
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Old 18th July 2008, 05:40 PM   #3
wa2ise is offline wa2ise  United States
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Looks like it would take a fair amount of "glue" logic and some small FIFO chips. Don't know how deep you want to go in that direction.

I did mods on the analog side with the PCM61 and 56 chips, see http://pw2.netcom.com/~wa2ise/radios/tubedac.htm#tubedac
using vacuum tubes.
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Old 18th July 2008, 09:00 PM   #4
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And best use a reconstruction filter like this to to eliminate hf and compensate for treble rolloff

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Old 19th July 2008, 03:10 PM   #5
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Oh yes, it is more complicated! Thank you very much for your answers, this definitely exceeds my possibilities
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