[wushuliu]

Unfortunately amb doesn't offer their boards fully assembled so the ebay version is all the more appealing. On the other hand I've found Chinese kit parts quality to indeed be inferior at times. Resistors can be noisier and caps are notorious for being fake. There are exceptions of course like singer etc. Always tradeoffs. No free lunch.

 

[Golfnutz]

Thinking about purchasing 1 of these units to power both TP-Link FMC's. Is it really necessary to have a separate LPS for each FMC? Specs show secondary current at 1377mA (I'm assuming for each output).
 

 

 

[rb2013]

Unfortunately amb doesn't offer their boards fully assembled so the ebay version is all the more appealing. On the other hand I've found Chinese kit parts quality to indeed be inferior at times. Resistors can be noisier and caps are notorious for being fake. There are exceptions of course like singer etc. Always tradeoffs. No free lunch.

I see -so you just buy a bare board - then have to assemble the parts yourself.
 
Well just a simple subbing out of some of the MEIYAN parts might just be easier.  The caps are decent -
 
the big 10,000uf 50V are British Nover's  not sure of the specs - but they could be replaced by
Nichicons KG's $7.88 each
http://www.digikey.com/product-detail/en/nichicon/LKG1H103MESCBK/493-13364-ND/1964421
 
or
Nichicon LLS 3,000hrs life $4.22
http://www.digikey.com/product-detail/en/nichicon/LLS1H103MELB/493-6156-ND/2548862
 
or UCC low ESR 2,000hr $4.55
http://www.digikey.com/product-detail/en/united-chemi-con/ESMH500VSN103MR45T/565-2677-ND/757890
 
But these Vishay BC's would probably be the ones I go with: 5000hrs, low impedence, low ESR, decent PSRR reasonable price $9.48each
http://www.digikey.com/product-detail/en/vishay-bc-components/MAL205851103E3/MAL205851103E3-ND/5633230
 
The small caps could be cheaply replaced by Pannie FM's.  As for resistors - Dale's or Vishay's Metal films are the cheap go to's...there's only few.
 
The white, red and green boxes are likely film caps - those can be replaced by WIMA MKP10's cheaply.  Not much else - I'd leave the diodes alone.

 

[wushuliu]

I see -so you just buy a bare board - then have to assemble the parts yourself.

Well just a simple subbing out of some of the MEIYAN parts might just be easier.  The caps are decent -

the big 10,000uf 50V are British Nover's  not sure of the specs - but they could be replaced by
Nichicons KG's $7.88 each
http://www.digikey.com/product-detail/en/nichicon/LKG1H103MESCBK/493-13364-ND/1964421

or
Nichicon LLS 3,000hrs life $4.22
http://www.digikey.com/product-detail/en/nichicon/LLS1H103MELB/493-6156-ND/2548862

or UCC low ESR 2,000hr $4.55
http://www.digikey.com/product-detail/en/united-chemi-con/ESMH500VSN103MR45T/565-2677-ND/757890

But these Vishay BC's would probably be the ones I go with: 5000hrs, low impedence, low ESR, decent PSRR reasonable price $9.48each
http://www.digikey.com/product-detail/en/vishay-bc-components/MAL205851103E3/MAL205851103E3-ND/5633230

The small caps could be cheaply replaced by Pannie FM's.  As for resistors - Dale's or Vishay's Metal films are the cheap go to's...there's only few.

The white, red and green boxes are likely film caps - those can be replaced by WIMA MKP10's cheaply.  Not much else - I'd leave the diodes alone.

Yep!

 

[rb2013]

  Thinking about purchasing 1 of these units to power both TP-Link FMC's. Is it really necessary to have a separate LPS for each FMC? Specs show secondary current at 1377mA (I'm assuming for each output).
 

 

No they are both 5VDC I believe -

 

[rb2013]

Yep!

Maybe $25 to upgrade the components and an hour of soldering.  Seems easier then starting from scratch with a bare board.

 

[Golfnutz]

 
No they are both 5VDC I believe -

External Power Supply provided with TP-LINK is 9vdc/600mA.
 
My question is more about any down side to running 2 TP-Link modules from 1 LPS as shown above.

 

[rb2013]

  External Power Supply provided with TP-LINK is 9vdc/600mA.
 
My question is more about any down side to running 2 TP-Link modules from 1 LPS as shown above.

Should be fine as long s you have enough amperage.

 

[rb2013]

These Mundorf M-Lytics would be sweet in the MEIYAN - a bit expensive at $21 each - but rated to 16,000hrs at 85C.
 
http://www.soniccraft.com/product_info.php/mundorf-mlytic-ag-mlgo-10000uf-63vdc-p-4087

 

[gmplus]

Unfortunately amb doesn't offer their boards fully assembled so the ebay version is all the more appealing. On the other hand I've found Chinese kit parts quality to indeed be inferior at times. Resistors can be noisier and caps are notorious for being fake. There are exceptions of course like singer etc. Always tradeoffs. No free lunch.

 
I asked the MEIYAN to make available a list of all elements of S11 Kit, to check their quality and it fits to the original AMB project,
Unfortunately, they refused, buy then you get !? They have to learn, how to be a more reliable ant trusted seller of electronics,

 

[rb2013]

Ok the MEIYAN 24VDC LPS arrived today.  Switched out the LT1083/R-Core Breeze for the MEIYAN on my Startech REX.
 
All I can say is wow!  Greater detail (already the best I have heard), smoother musicality, better transparency and air.
 
Sublime.  I imagine after a few hundred hours it will sound better.  I'll order up the Mundorf M'Lytic 10,000uf 63V caps for some modding.  Will leave pretty much everything else stock.
 
Nice components - beautiful Copper shielded ZeroZone R-Core, Elna caps, Pannie FM caps, looks like Dale resistors, very nice finned case to act a heatsink for the MOSFETs.  Oh and the Schurter style AC common mode filter is a nice touch.  The PSRR of this unit has to be very high with that 30V R-core and discrete design.

 

 

 

 

 

 

 

 

 

 

 

 

[rb2013]

Ok night two with the MEIYAN...oh man is this the real deal. I'm amazed at what an improvement this has made.

Ordered the 0.8uv LT3042 board to swap into the Breeze Rcore box, with the LT1083.

I'll give that a listen vs the modded TeraDak DC30W.

 

[gmplus]

  Ok the MEIYAN 24VDC LPS arrived today.  Switched out the LT1083/R-Core Breeze for the MEIYAN on my Startech REX.
 

 
LT1083 on board ? It looks like MEIYAN LPS with Sigma11 board (chinese version)

 

[rb2013]

   
LT1083 on board ? It looks like MEIYAN LPS with Sigma11 board (chinese version)

Yes it is a similar design as the Sigma 11 - not exact (note the larger 10,000uf dual caps).  In my system I swapped the Breeze Audio LPS (LT1083) for the MEIYAN LPS.  The SQ improved dramatically.  So I was not saying the MEIYAN had a LT1083 board.
 
Ordered this LT3042 board to swap into the Breeze Audio chassis staying with the R-Core.  So that Breeze will not go to waist.  Dropping the noise from 180uv to 0.8uv.
This board is available in 5VDC from this seller.  DIYinHK also has a nice kit with 3.3VDC and 5VDC on tap - but a much lower 500mA continuous rating without additional heatsinks and fan.
 
This seller confirmed 1.5A without a fan or additional heatsinks.  I will use this in my Ultra USB chain to power the F-1 through a iPur2 - now powered by a TerDak DC-30w (new design) upgraded with Nichicon HW caps and a DC iPur feeding a W4S Recovery.  My hope is the Recovery and DC iPur will no longer be needed.  If the SQ degrades with this chain - will use the LT3042 on the LEX of the Startech (now powered by a TeraDak X1 with Nichicon HW caps).
 
http://www.ebay.com/itm/142115498378?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

 

[rb2013]

I ordered one of these for the MEIYAN - nice Teddy Pardo silver/teflon DC power cord.  Reasonable price - if it makes a noticeable difference will order a couple more.
 
http://www.teddypardo.com/cables/misc-cables/power-supply-cable.html