I was thinking;
Does anyone have any experience in modding a sacd-player so that it would have a high res. digital output.
I know Oehlrich has done a terrific job on a pioneer 575a but it only does 88.2khz. I would like a 176.4khz output.
So I have the follwoing suggestion;
Take a sony xe-670 which has dsd1702 dac. Now take a pcm4204 (or maybe sm5819) and convert dsd to pcm and then to aes/spdif.
The dsd1702 and pcm 4204 are both from TI's Burr Brown so maybe they have the same dsd input-format?
Anyone any experience with this? Anyone interested in doing so?
Maybe someone (in the Netherlands) would like to help or try with me?
Does anyone have any experience in modding a sacd-player so that it would have a high res. digital output.
I know Oehlrich has done a terrific job on a pioneer 575a but it only does 88.2khz. I would like a 176.4khz output.
So I have the follwoing suggestion;
Take a sony xe-670 which has dsd1702 dac. Now take a pcm4204 (or maybe sm5819) and convert dsd to pcm and then to aes/spdif.
The dsd1702 and pcm 4204 are both from TI's Burr Brown so maybe they have the same dsd input-format?
Anyone any experience with this? Anyone interested in doing so?
Maybe someone (in the Netherlands) would like to help or try with me?
I have read the pcm's PDF again and I now know this
DSD input is 64fS (64x44.1=2,8224Mhz which is the SACD freq. This is also the DSD freq that the dsd1702 accepts, must be correct
) This is called dualrate. And according to page 16 of the pdf; the dual rate mode is utilized for sampling frequencies higher than 54kHz and up to 108kHz. So max will be 88,2kHz stereo
Conclusion; it is better to use oehlrich's pioneer-output 
DSD input is 64fS (64x44.1=2,8224Mhz which is the SACD freq. This is also the DSD freq that the dsd1702 accepts, must be correct
) This is called dualrate. And according to page 16 of the pdf; the dual rate mode is utilized for sampling frequencies higher than 54kHz and up to 108kHz. So max will be 88,2kHz stereoConclusion; it is better to use oehlrich's pioneer-output
according to;
http://www.npcamerica.com/Datasheets/SM5816.pdf
page 3 suggests that one can convert dsd to pcm with 8fs 24/32bit
8fs=8x44.1khz=352.8khz
hmm can this be something?
Thanks rfbrw, I will look into it. Anyone else any suggestions?
http://www.npcamerica.com/Datasheets/SM5816.pdf
page 3 suggests that one can convert dsd to pcm with 8fs 24/32bit
8fs=8x44.1khz=352.8khz
hmm can this be something?
Thanks rfbrw, I will look into it. Anyone else any suggestions?
aaronboumans said:
It has been that way in the past but you could give these guys a bell. http://www.kagaeuro.com/npc.html
fascinating chip, that NPC. i wonder how the decimation filters sound. i suppose if you had the know-how you could feed it your own coefficients.
if i were able to build my dream all-digital stereo system, i would use that chip so i could perform DSP on DSD. i guess you will never see a commercial product with high-res PCM out on SACD tho, due to copyright restrictions. i hate sony. 
if i were able to build my dream all-digital stereo system, i would use that chip so i could perform DSP on DSD.
i guess you will never see a commercial product with high-res PCM out on SACD tho, due to copyright restrictions. i hate sony. The closest DSD-PCM product with 176.4KHz and 192KHz SPDIF outs is from DVDupgrade in Swiss.
http://www.dvdupgrades.ch/150019/Modification/SPDIF/Output/Six_channel_S_P_DIF_output_board.html
Have anyone tried this? I want to send them one of my old SACD player to get modded.
http://www.dvdupgrades.ch/150019/Modification/SPDIF/Output/Six_channel_S_P_DIF_output_board.html
Have anyone tried this? I want to send them one of my old SACD player to get modded.
Hello!
I know about a modified DV-668 with the PCB from dvdupgrades.ch.
Ordering procedure was horrible, but the board arrived within a few days. Installation was simple with the right equipment (smd workplace with microscope). Digital audio performance for DVD-Audio is slightly worse than a modded DV-575 (!), due to the lack of a measurment SACD there were no measurments for converted DSD.
The kit is in my eyes too expensive for its performance, I'd rather get a DV-575 or equivalent and mod this one if you can do without 176.4k.
Holger
I know about a modified DV-668 with the PCB from dvdupgrades.ch.
Ordering procedure was horrible, but the board arrived within a few days. Installation was simple with the right equipment (smd workplace with microscope). Digital audio performance for DVD-Audio is slightly worse than a modded DV-575 (!), due to the lack of a measurment SACD there were no measurments for converted DSD.
The kit is in my eyes too expensive for its performance, I'd rather get a DV-575 or equivalent and mod this one if you can do without 176.4k.
Holger
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.