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Old 30th April 2013, 03:47 PM   #1481
RollE2k is offline RollE2k  Sweden
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I've read somewhere that the newer board does have dual clock rate, that is 45.xxx/49.xxxMHz is that right? :-)
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Old 30th April 2013, 05:01 PM   #1482
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22/24 oscillators on all of my boards from latest GB.

Maybe on the MCLK_IN pin... Yet i'd like to go 11/12meg as they tend to have better phase noise specs than 22/24 and are easier to design than 45/49 megs
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Last edited by s3tup; 30th April 2013 at 05:03 PM.
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Old 30th April 2013, 06:48 PM   #1483
mkc is online now mkc  Denmark
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Boards received.

Thanks,
Mogens
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Old 30th April 2013, 11:18 PM   #1484
billyk is offline billyk  United States
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Received my boards today, thank you. They look great, shipped quickly too!
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Old 1st May 2013, 12:07 AM   #1485
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Quote:
Originally Posted by RollE2k View Post
I've read somewhere that the newer board does have dual clock rate, that is 45.xxx/49.xxxMHz is that right? :-)
I think hardware is the same, a firmware upgrade will enable it, I haven't checked in a few weeks but I haven't seen the firmware to enable the 45/49MHz input via mclk-in pin.
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Old 2nd May 2013, 10:21 AM   #1486
axeexa is offline axeexa  Taiwan
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5/2 Boards received.
Thank you.

Antony
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Old 5th May 2013, 07:20 PM   #1487
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did anyone attempt to replace regulators?
and to power XOs with external reg?
of course i'll add at least 2 shunt regs, at least for xos and chips. damn do i hate hacking around small smds :/
is a sch available only for regs and all those caps?
btw got my board intact.
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Old 5th May 2013, 07:44 PM   #1488
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Quote:
Originally Posted by next667 View Post
did anyone attempt to replace regulators?
and to power XOs with external reg?
of course i'll add at least 2 shunt regs, at least for xos and chips. damn do i hate hacking around small smds :/
is a sch available only for regs and all those caps?
I wonder if you'll get any improvements by doing all that.....especially with all the new wiring you'll have floating around.....you might add more noise/problems than you're trying to take away.
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Old 5th May 2013, 08:15 PM   #1489
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Quote:
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I wonder if you'll get any improvements by doing all that.....especially with all the new wiring you'll have floating around.....you might add more noise/problems than you're trying to take away.
So true...

The only way to really improve the stuff is to use external oscillators on a well-made PCB, with attention to signal integrity stuff, with a good filtering of I2S coming out of Amanero's board, and with proper feed of the DAC with the MCLK (or whichever matters for jitter) signal.

The best place for these oscillators is a DAC board - this way you don't have too many ways to screw the things up.
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Old 6th May 2013, 10:00 AM   #1490
patnsh is offline patnsh  Hong Kong
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Boards X 2 received.

Thank you.
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