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Old 12th February 2019, 03:14 PM   #1031
Greg Stewart is online now Greg Stewart  United States
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Location: Columbus, Mississippi
MicroSD Memory Card Transport Project
@bitinhvi,

That should work very well. While the TPS7A4700 are not the latest and greatest regulators anymore, they are still good and should serve you well here... and be significant upgrades over the ADP151 LDO's on the board.

Looking forward to hearing your report.

BTW, Ian will be starting his Group Buy soon AND his LiFePO4 board will be around $200. Looks like you have what you need with this, but just in case...

Greg in Mississippi
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Old 13th February 2019, 02:03 PM   #1032
bitinhvi is offline bitinhvi  Viet Nam
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Thanks Greg. I hope to have enough time to finish my projects soon.

I wished Ian release his board earlier. But now will try with the board I got in hand first.
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Old 17th February 2019, 06:13 AM   #1033
JOHNNYCR100 is offline JOHNNYCR100  Abu Dhabi
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Thumbs up Distorted music when connecting ad transplanter to AYa DAC

Hi gents,

Finally got around to connecting my SDtrans player ( purchased in nov 2018)
With my Aya DAC purchased around th seams time, the Dac plays SPDIF input from my cd player very nicely, however when I connect my SDtrans music is audiable but with heavy distortion.
I have :
SDAT on the SD player connected to J303 DL/DATIN onthe AYA
BCK. on the SD player connected to J305 BCK IN on the AYA
L/R CLK on the SD player connected to J307 LE/WS on the AYA

As we know there are no UFL connectors on the SD trans ( be really good to have them eh?) some butchered some UFL connectors with appropriate ends to fit, on the DAC the input selection works and I can switch between the SDPlayerand my CD player, the 12s / sim switch is switched to 12s ( and stops audio when selected with my cd player connected so that works is sumise.

The UFL connectors have been checked with a multimeter and the earth and signal do not short and the leads have continuity when earth on sig are checked, they are however about 6 inches long.

So hopefully I am a twit who dont know diddly about connecting 12 s and can be called out for doing it wrong ( I Am a bit of a newbee )but if everyone could agree on a common standard and the SD trans had UFL sockets the the world would be peachy.....any suggestions gents ( apologies to sumotan who did sent some pictures,( I think I am following them?) - that's why I am confused here


Best regards
Johnny
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Old 18th February 2019, 02:34 AM   #1034
JOHNNYCR100 is offline JOHNNYCR100  Abu Dhabi
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Location: Middle East someware!
Default Distorted audio when connecting SDtrans 384 Player to new AYA DAC

Quote:
Originally Posted by JOHNNYCR100 View Post
Hi gents,

Finally got around to connecting my SDtrans player ( purchased in nov 2018) running version 3.29 Software
With my Aya DAC purchased around the same time, the Dac plays SPDIF input from my cd player very nicely, however when I connect my SDtrans music is audiable but with heavy distortion.( player works fine when taking BNC output to external DAC)
I have :
SDAT on the SD player connected to J303 DL/DATIN onthe AYA
BCK. on the SD player connected to J305 BCK IN on the AYA
L/R CLK on the SD player connected to J307 LE/WS on the AYA

As we know there are no UFL connectors on the SD trans ( be really good to have them eh?) some butchered some UFL connectors with appropriate ends to fit, on the DAC the input selection works and I can switch between the SDPlayer and my CD player, the 12s / sim switch is switched to 12s ( and stops audio when selected with my cd player connected so that works is sumise.

The UFL connectors have been checked with a multimeter and the earth and signal do not short and the leads have continuity when earth on sig are checked, they are however about 6 inches long.

So hopefully I am a twit who dont know diddly about connecting 12 s and can be called out for doing it wrong ( I Am a bit of a newbee )but if everyone could agree on a common standard and the SD trans had UFL sockets the the world would be peachy.....any suggestions gents ( apologies to sumotan who did sent some pictures,( I think I am following them?) - that's why I am confused here


Best regards
Johnny
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Old 15th March 2019, 02:18 PM   #1035
bitinhvi is offline bitinhvi  Viet Nam
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Hi Greg,

Thank you very much for SDTrans manual, below is my progress so far.

Not all running on battery yet. Unfortunately, my regulator board has minimum voltage output at 1.4V, so the SDTrans is fed by TwistedPearAudio Placid shunt power supply. Sound is so good.

Just place order for 02 ldovr.com LT3045 boards, after that I can run SDTrans on battery. Can't wait to here how it sounds.



Quote:
Originally Posted by Greg Stewart View Post
@bitinhvi,

That should work very well. While the TPS7A4700 are not the latest and greatest regulators anymore, they are still good and should serve you well here... and be significant upgrades over the ADP151 LDO's on the board.

Looking forward to hearing your report.

BTW, Ian will be starting his Group Buy soon AND his LiFePO4 board will be around $200. Looks like you have what you need with this, but just in case...

Greg in Mississippi
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Old Yesterday, 08:49 AM   #1036
sumotan is online now sumotan  Indonesia
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The SdTrans will sound even better with separate PS to each onboard regs.
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