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Clock Modification for Pioneer PD-D9 SACD Player
Clock Modification for Pioneer PD-D9 SACD Player
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Old 2nd November 2009, 04:47 PM   #1
Hercules is offline Hercules  Hong Kong
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Join Date: Dec 2003
Location: Hong Kong
Default Clock Modification for Pioneer PD-D9 SACD Player

Dear All:

Just got the Service Manual of Pioneer PD-D9 for clock modification, I found 2 OCX of 27Mhz (for MT1389EE Chip) and 22Mhz for SRC and MCLK(PCM only) for DAC. This SACD player employed 2x WM8741 DAC chip, i suppose this player using DSD direct mode, so if I want improvement on SACD playback, I should modify the 27Mhz one, while improvement for CD playback, I should modify the 22Mhz, is it correct?

Thanks for any comments!!
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Old 3rd November 2009, 09:36 PM   #2
SoNic_real_one is offline SoNic_real_one  United States
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Join Date: Jan 2008
Location: Virginia
The SRC 4192 is doing the reclocking and upsampling of the PCM signals. DSD signals are bypassing that SRC and are going straight to DAC.
So, for SACD it is necessary to upgrade the 27MHz clock. For PCM the 22MHz is the main one.
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Old 30th November 2009, 04:42 PM   #3
bibhuti_73 is offline bibhuti_73  India
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Join Date: Aug 2009
Quote:
Originally Posted by Hercules View Post
Dear All:

Just got the Service Manual of Pioneer PD-D9 for clock modification, I found 2 OCX of 27Mhz (for MT1389EE Chip) and 22Mhz for SRC and MCLK(PCM only) for DAC. This SACD player employed 2x WM8741 DAC chip, i suppose this player using DSD direct mode, so if I want improvement on SACD playback, I should modify the 27Mhz one, while improvement for CD playback, I should modify the 22Mhz, is it correct?

Thanks for any comments!!
I have PD-D9 cd player, could you send the service manual
thanks
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