Buffalo GS20xx - Bypass 12V stage via 3 external PSs

[tgb]

11 minutes ago, Soul Analogue said:

Mp audio modules parallel several 3045 to achieve the current output capability... 

The consequences of paralleling is the damage to frequency coherence, bandwidth and impedance, these are essential for the flow of music 

Honestly... 

how can you say that ? 

Based on a strict electronic point of view ? why not ? it's above my background, but thanks to give tech info to understand this mixup.

 

What I see : 1 transfo > 1 rail

that's it.

no mixup there because no link. No link = independant...

If no "independant", please explain. No brainer for me to learn smth

Rgds

[Soul Analogue]

9 minutes ago, tgb said:

Honestly... 

how can you say that ? 

Based on a strict electronic point of view ? why not ? it's above my background, but thanks to give tech info to understand this mixup.

 

What I see : 1 transfo > 1 rail

that's it.

no mixup there because no link. No link = independant...

If no "independant", please explain. No brainer for me to learn smth

Rgds

sorry i do not want to blame the design of other products in the market by technical point of views...

They do offer tremendous convenience to diyers... 

 

Please excuse me to have said that much

 

just enjoy the 🎶 

[tims]

Hi guys

 

Off topic, but in case you don't know there is a GB for a SOTA clock developed my Andrea Mori and others that's meant to match the Pink Faun OCXO clock (https://www.diyaudio.com/forums/digital-line-level/261651-tempered-master-clock-building-low-phase-noise-jitter-crystal-oscillator-54.html#post6344203).

I have two GS2016 switches that I plan to upgrade the clocks and my order will cost €206 plus shipping (and tax if you're in the EU) - seems a 'no brainer' to me and there's plenty of interest.

 

If you're interested here is the link to the group buy:

https://www.diyaudio.com/forums/group-buys/291925-tempered-master-clock-buy.html

 

My order (to replace the clocks in my two switches) is:
1 x 6.2500 MHz AT-cut
1 x TWTMC-PXO-AIO-SF
1 x TWTMC-PXO-AIO-XFMR
1 x TWTMC-STS-FSDO-F

 

If you need other info, go to https://www.diyaudio.com/forums/digital-line-level/261651-tempered-master-clock-building-low-phase-noise-jitter-crystal-oscillator-68.html, to ask questions but if you're interested better hurry as the GB closes soon.

[Soul Analogue]

9 minutes ago, tims said:

1 hour ago, tims said:

Hi guys

 

Off topic, but in case you don't know there is a GB for a SOTA clock developed my Andrea Mori and others that's meant to match the Pink Faun OCXO clock (https://www.diyaudio.com/forums/digital-line-level/261651-tempered-master-clock-building-low-phase-noise-jitter-crystal-oscillator-54.html#post6344203).

I have two GS2016 switches that I plan to upgrade the clocks and my order will cost €206 plus shipping (and tax if you're in the EU) - seems a 'no brainer' to me and there's plenty of interest.

 

If you're interested here is the link to the group buy:

https://www.diyaudio.com/forums/group-buys/291925-tempered-master-clock-buy.html

 

My order (to replace the clocks in my two switches) is:
1 x 6.2500 MHz AT-cut
1 x TWTMC-PXO-AIO-SF
1 x TWTMC-PXO-AIO-XFMR
1 x TWTMC-STS-FSDO-F

 

If you need other info, go to https://www.diyaudio.com/forums/digital-line-level/261651-tempered-master-clock-building-low-phase-noise-jitter-crystal-oscillator-68.html, to ask questions but if you're interested better hurry as the GB closes soon.

Thank you for the information

 

Unfortunately the diyaudio posts do not mention the output type of the clocks....

the buffalo only takes lvcmos.... and it does not work with cmos output clock signal..

[tims]

1 hour ago, Soul Analogue said:

Thank you for the information

 

Unfortunately the diyaudio posts do not mention the output type of the clocks....

the buffalo only takes lvcmos.... and it does not work with cmos output clock signal..

This was bought up here:

https://www.diyaudio.com/forums/digital-line-level/261651-tempered-master-clock-building-low-phase-noise-jitter-crystal-oscillator-57.html#post6368666

 

"Hi Andrea.
If a Buffalo BS-GS2016 switch only works with LVCMOS output clocks, is there problems to use any of Yours clocks?"

*

"No problem, you can use all the new oscillators since they need to be followed by a sine to square converter that's LVCMOS output"

 

[Soul Analogue]

8 hours ago, tims said:

Hi guys

 

Off topic, but in case you don't know there is a GB for a SOTA clock developed my Andrea Mori and others that's meant to match the Pink Faun OCXO clock (https://www.diyaudio.com/forums/digital-line-level/261651-tempered-master-clock-building-low-phase-noise-jitter-crystal-oscillator-54.html#post6344203).

I have two GS2016 switches that I plan to upgrade the clocks and my order will cost €206 plus shipping (and tax if you're in the EU) - seems a 'no brainer' to me and there's plenty of interest.

 

If you're interested here is the link to the group buy:

https://www.diyaudio.com/forums/group-buys/291925-tempered-master-clock-buy.html

 

My order (to replace the clocks in my two switches) is:
1 x 6.2500 MHz AT-cut
1 x TWTMC-PXO-AIO-SF
1 x TWTMC-PXO-AIO-XFMR
1 x TWTMC-STS-FSDO-F

 

If you need other info, go to https://www.diyaudio.com/forums/digital-line-level/261651-tempered-master-clock-building-low-phase-noise-jitter-crystal-oscillator-68.html, to ask questions but if you're interested better hurry as the GB closes soon.

Hi, wonder why you choose AT cut rather than SC cut?

so what I would be interested to get 3 sets to achieve 25mhz....

one set to get 24.576mhz and one set to get 33.8688mhz

[tims]

1 hour ago, Soul Analogue said:

Hi, wonder why you choose AT cut rather than SC cut?

so what I would be interested to get 3 sets to achieve 25mhz....

one set to get 24.576mhz and one set to get 33.8688mhz

For 25Mhz, choosing the AT cut crystal was the only one that had any chance of reaching the MOQ.

[Soul Analogue]

1 hour ago, tims said:

For 25Mhz, choosing the AT cut crystal was the only one that had any chance of reaching the MOQ.

How many MOQ for 25mhz SC cut ?

[basillus]

1 hour ago, Soul Analogue said:

How many MOQ for 25mhz SC cut ?

10 you can see it here, but the spreadsheet isn`t 100% updated.
https://docs.google.com/spreadsheets/d/1uBYtB2rbaraCmNhjiqGeE8SPkopWz0-IlLAIEpsnRR0/edit#gid=1488889332

 

Maybe can my thread here help You and give You a better overview.
https://audiophilestyle.com/forums/topic/60699-anyone-need-a-25mhz-crystalclock-to-theirs-buffalo-switch-nucs-or-at-andrea-moris-groupbuy-at-diyaudio/?do=findComment&comment=1093423

If the XO-boards may be in a external boxes etc as Andrea strongly recommend and just use 2 XOboards it is possible to use them with the TWTMC-STS-FSDO-F New Sine to square converter board there have 2 inputs and 2x2 outputs and then You don`t need to buy 3 XO boards etc.

[tgb]

On 12/2/2020 at 3:17 AM, Soul Analogue said:

Please excuse me to have said that much

just enjoy the 🎶 

Hi Soul Analogue,

no problem.

I apologize too because my posts & modds are not perfects.

Just look at my Buffalo vs yours, and you see clearly that there is one guy that do what he can do with AC/DC modules & the other guy that knows a lot more about electronics ;-)

Thanks for all your feedbacks & mods.

Cheers

 

----------------------------------------------------------------------------------

 

Regarding this thread & my previous post :

I gave the info that my Buffalo, with triple LPS, gave a SQ behind Corning>modded SU-1.

 

As the Corning seems to be a good gear/link, I wanted to modifiy it, using the same basic trick : external PS to the voltage used by the PCB (regulators bypass).

FYI  the end-plug of the Corning gets 16VDC from the PC-side-plug ; then, in this tiny PCB, the 16VDC is down-regulated to 5 / 3.3 & 1.2VDC.

 

As it is really tiny work... and as I'm poor at soldering, I wanted to train myself at soldering on small PCB (smaller than Buffalo PCB, bigger than Corning's).

Thus, I tested bypass regulators on a FMC !

This one => https://www.fs.com/products/100957.html

 

Surprise ! The FMC give a better SQ than the Corning (thus better than my previous modded Buffalo).

I just power this FMC with the 2 voltages used on the PCB : 3.3 & 1.2VDC. Using a PS based on a transfo & double-stage regulation for both voltages (regulation only LT3045 based).

More trials & tests are still needed but this basic bypass besed on 2ble-stage regulation PS gives already promising results.

 

The idea was : 

When we use Buffalo & audiophile switches, we use only 2 ports : 1 "in" & 1 "out".

Thus, why not using a FMC, that does the same job : 2 ports > 1 "in" & 1 "out".

Test confirms that basic idea.

I'll post a new thread about this on this forum. I think it is interesting because it gives good SQ & because it's a small PCB ! Small stuff, low intensities to manage (0.2A on 1.2VDC & 0.53A on 3.3VDC)

FIY I posted this rough work on the FMC overthere => http://forum-hifi.fr/thread-19504.html ;

 

Strange hobby : moving from Buffalo > modded Buffalo > Corning (USB ! network is out !) > modded FMC (network is back !)

.. wondering what will come next :-)

Rgds

[RickyV]

This is my Buffalo build. The challenge was to have one input voltage, keep the heat away from the LT 3045’s and to spread the heat between the power supply and the extra heat sinks in the buffalo. LT3045’s doesn’t do heat very well, with the 1V regulator being leading. Anything other then 1.8V leads too much heat in 5A regulator stack, it’s now approx 40 degrees. So I put a 5A regulator in front of each lt3045 to take the voltage drop/ heat.

 

 

[RickyV]

The power supply consists of a 10V, 80VA transformer, a 10000uF/40v Mundorf ag and a newclassd 5A regulator. 
At first I had the transformer on one secondary winding so 4A but the transformer got too hot for my liking/ continues use. With the full 80VA it is 37 degrees C with one sec it was more like 50 degrees C.

[drjimwillie]

On 12/14/2020 at 10:21 AM, tgb said:

Hi Soul Analogue,

no problem.

I apologize too because my posts & modds are not perfects.

Just look at my Buffalo vs yours, and you see clearly that there is one guy that do what he can do with AC/DC modules & the other guy that knows a lot more about electronics ;-)

Thanks for all your feedbacks & mods.

Cheers

 

----------------------------------------------------------------------------------

 

Regarding this thread & my previous post :

I gave the info that my Buffalo, with triple LPS, gave a SQ behind Corning>modded SU-1.

Speaking of modified Singxer SU-1’s,

I just put my SU-1 for sale on eBay. It was modified by @Energy for himself!

It has five LT 3045 boards on it and he added a CCHD575 for the USB input and everything else he could think of.  It sounds fantastic. He says it sounds better than a SU-6. Sorry this is OT. I got excited🙂