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Old 26th January 2013, 10:22 AM   #2261
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How did you come to that conclusion TNT?
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Old 26th January 2013, 10:29 AM   #2262
TNT is offline TNT  Sweden
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1) the added mass to the board and potential wiggly mechanical connection / vibration possibility.
2) The distance between the low z power feeding and the consumer.
3) OK, I wrote "for most" as I think opening up this level of interface creates options and makes it harder in general to create a good predictable solution if one would evaluate the statistical outcome of a lot of implementations. But hey, Ian is probably doing this for himself aiming at the ultimate solution and not a mass-market product

Would a "sense" pin on the board connected to the point of consumption be usable??

All this is of course nit picking on the 8:th decimal :-D

/

Last edited by TNT; 26th January 2013 at 10:52 AM. Reason: added "vibration" + assess (misspelled) -> evaluate
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Old 26th January 2013, 10:40 AM   #2263
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Quote:
Originally Posted by iancanada View Post
1, TPS7A4700 low noise LDO board
This reg board is confirmed to be one of the best LDO boards so far to power the clock board. You can connected to it by plugging into the 3P SIP socket, but it would be better to be soldered directly to the pins once you decided to stick with it. TPS7A4700 reg board could be placed both in vertical and in horizontal position to the clock board.
Beautiful. PM sent.
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Old 26th January 2013, 12:06 PM   #2264
qusp is offline qusp  Australia
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1. yes, because everyone knows sound waves travel from speakers directly through enclosures, always striking the vertical surface first....
Ian already recommended soldering it if permanent installation is desired.

2. its the decoupling caps supplying the transients... low noise is most important

3. if it were a mass market product he would have stopped long ago and charged a lot more.

Ian has already demonstrated an ability to actually measure as well as model the minutiae many can only ponder or guess at the existence of. he knows there are better solutions for low noise than an LDO, but also knows everyone at this level or at least most of us, have already formed an opinion of what that is, which may or may not coincide with his own preference.

he would never please everyone, most will without certainty plug in a power source that is per-concieved to be 'the best' and clocks in general are an area people are pretty fanatical about, best leave the crazy people to their own devices

Last edited by qusp; 26th January 2013 at 12:11 PM.
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Old 26th January 2013, 01:13 PM   #2265
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Ian,

One question:

I got the Dual-Clock-Board from you with the 22./24 clocks on it and TP3/TP4 etched as text on the PCB for this speed. I exchanged the clocks to crystek 957 22/24. Plug and play.

If I now want to get to 44/49: What to do ?

I have read your guide on double speed, but it says: TP3/TP4 again. for the 44 and TP4/TP5 for 22.

SOOOOOOOOOOO.....has there been a different version of the board or a firmware-update ? Or what was the "MASTER-Switch" which changes to right setting for 22.x from TP3/Tp4 (as etched on the PCB and written in your V1 guide) to TP4/TP5 (as written in the double XO-Speed guide) ? I am confused.

Last edited by Blitz; 26th January 2013 at 01:18 PM.
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Old 26th January 2013, 01:20 PM   #2266
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Blitz, does your dualxo board have a firmware version label/sticker on it?
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Old 26th January 2013, 02:39 PM   #2267
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there was no difference in hardware, just firmware.
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Old 26th January 2013, 03:14 PM   #2268
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Quote:
Originally Posted by hochopeper View Post
Blitz, does your dualxo board have a firmware version label/sticker on it?
no....what would happen if I pull the 22 clock now with tp3/4 and plug the 44 in ? any damage possible or should i simply try ?
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Old 26th January 2013, 04:32 PM   #2269
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Quote:
Originally Posted by Blitz View Post
Ian,

One question:

I got the Dual-Clock-Board from you with the 22./24 clocks on it and TP3/TP4 etched as text on the PCB for this speed. I exchanged the clocks to crystek 957 22/24. Plug and play.

If I now want to get to 44/49: What to do ?

I have read your guide on double speed, but it says: TP3/TP4 again. for the 44 and TP4/TP5 for 22.

SOOOOOOOOOOO.....has there been a different version of the board or a firmware-update ? Or what was the "MASTER-Switch" which changes to right setting for 22.x from TP3/Tp4 (as etched on the PCB and written in your V1 guide) to TP4/TP5 (as written in the double XO-Speed guide) ? I am confused.
Blitz,

They gave correct answers.

You just need to make sure the dual xo firmware is the most updated version which is V3.3 by now. Software will take care for anything else.

Nice weekend.

Ian
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Old 26th January 2013, 05:36 PM   #2270
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Found the sticker, it was under the board...and as I have connected the board with everything it was not easy to find...3.3, yes.

So it was plug and play without changing anything...easy.

Only question left: I put the jumper between TP3 and TP4...as well with the 22.x clock. Made nice music...but according to your guide this was wrong. TP4/TP5 would have been right, correct ? So, I should change the TP3/4 to TP4/5 with 22.x and see how this sounds ?

By the way: The Crystek 22.x with TP3/4 sounds completely different than the Tentlabs 45.x. The crystek much like a Direct heated Triode...very rich tonality, very fluent and liquid sound. The Tentlabs sounds like a heavy-feedback transistor amp based on bi-polars in comparison. Clean, controlled, but technical sounding. Unbelievable how much a clock can do.
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