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17th January 2013, 03:28 PM
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#141 |
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diyAudio Member
Join Date: Feb 2003
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Acko, Australia X1
RollE2k, Sweden X1 number9, USA X2 Klipschkid, HK, x1 randytsuch, USA X2 grufti, USA X2 kp93300, malaysia x1 Gricko,Croatia x1 NicMac, Italy x2 xtomm, Czech Republic x1 DeanoUK, UK, x2 Lil' Knight, VN x1 smanz, Spain x1 MisterRogers, USA x2 palmito USA x1 tagheuer Canada x1 shoom UK x1 Diyfan, USA x1 TheShaman, Greece x1 LuisMCP, Spain x2 qusp x1 danny_66 x1 meintan x1 mksung x 1 vanwykca UK x1 ccliu, Taiwan x2 leejh x10 bk856er, USA x1 linuxfan, Australia X1 bigpandahk, Hong Kong x 2 rsotirov, Canada x 1 DQ828, Australia x 1 Esl 63, Sweden, x 1 necplusultra Canada x1 (depends on shipping halfway accross the world) Awh, uk, x1 enantra, Spain x3 mvaldes, Italy x1 SCompRacer, USA x1 t27049215, Taiwan x2 unixdeveloper, USA x1 nik.d, Serbia x1 markus22ch, Switzerland X2 whmok, Singapore x1 vitalica x 2 richard_pc, Taiwan x2 Malvin, USA x1 damohpi, AUS x1 Eric06,France x1 sidiropa, Greece x2 miksi, Serbia x1 glt, USA x1 hochopeper, Aus x1 fredlock, USA X1 Galvani, Country ?? X1 bkdog Australia x1 duc985 Germany x 1 opc Canada x 1 Total = 82
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Here's looking at you, kid. |
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17th January 2013, 03:32 PM
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#142 |
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Master Burner
Join Date: Dec 2002
Location: San Francisco, California
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Acko, Australia X1
RollE2k, Sweden X1 number9, USA X2 Klipschkid, HK, x1 randytsuch, USA X2 grufti, USA X2 kp93300, malaysia x1 Gricko,Croatia x1 NicMac, Italy x2 xtomm, Czech Republic x1 DeanoUK, UK, x2 Lil' Knight, VN x1 smanz, Spain x1 MisterRogers, USA x2 palmito USA x1 tagheuer Canada x1 shoom UK x1 Diyfan, USA x1 TheShaman, Greece x1 LuisMCP, Spain x2 qusp x1 danny_66 x1 meintan x1 mksung x 1 vanwykca UK x1 ccliu, Taiwan x2 leejh x10 bk856er, USA x1 linuxfan, Australia X1 bigpandahk, Hong Kong x 2 rsotirov, Canada x 1 DQ828, Australia x 1 Esl 63, Sweden, x 1 necplusultra Canada x1 (depends on shipping halfway accross the world) Awh, uk, x1 enantra, Spain x3 mvaldes, Italy x1 SCompRacer, USA x1 t27049215, Taiwan x2 unixdeveloper, USA x1 nik.d, Serbia x1 markus22ch, Switzerland X2 whmok, Singapore x1 vitalica x 2 richard_pc, Taiwan x1 Malvin, USA x1 damohpi, AUS x1 Eric06,France x1 sidiropa, Greece x2 miksi, Serbia x1 glt, USA x1 hochopeper, Aus x1 fredlock, USA X1 Galvani, Country ?? X1 bkdog Australia x1 duc985 Germany x 1 opc Canada x 1 AR2 USA x 2 Total 83
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www.burningamp.com |
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17th January 2013, 06:20 PM
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#143 |
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diyAudio Member
Join Date: Jan 2007
Location: Crete
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Acko, Australia X1
RollE2k, Sweden X1 number9, USA X2 Klipschkid, HK, x1 randytsuch, USA X2 grufti, USA X2 kp93300, malaysia x1 Gricko,Croatia x1 NicMac, Italy x2 xtomm, Czech Republic x1 DeanoUK, UK, x2 Lil' Knight, VN x1 smanz, Spain x1 MisterRogers, USA x2 palmito USA x1 tagheuer Canada x1 shoom UK x1 Diyfan, USA x1 TheShaman, Greece x3 LuisMCP, Spain x2 qusp x1 danny_66 x1 meintan x1 mksung x 1 vanwykca UK x1 ccliu, Taiwan x2 leejh x10 bk856er, USA x1 linuxfan, Australia X1 bigpandahk, Hong Kong x 2 rsotirov, Canada x 1 DQ828, Australia x 1 Esl 63, Sweden, x 1 necplusultra Canada x1 (depends on shipping halfway accross the world) Awh, uk, x1 enantra, Spain x3 mvaldes, Italy x1 SCompRacer, USA x1 t27049215, Taiwan x2 unixdeveloper, USA x1 nik.d, Serbia x1 markus22ch, Switzerland X2 whmok, Singapore x1 vitalica x 2 richard_pc, Taiwan x1 Malvin, USA x1 damohpi, AUS x1 Eric06,France x1 sidiropa, Greece x2 miksi, Serbia x1 glt, USA x1 hochopeper, Aus x1 fredlock, USA X1 Galvani, Country ?? X1 bkdog Australia x1 duc985 Germany x 1 opc Canada x 1 AR2 USA x 2 Total: 85
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"You have a hierarchy: a mathematician, a physicist (which is a failed mathematician), and an engineer (which is a failed physicist)." - Andrew Jones |
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17th January 2013, 07:18 PM
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#144 |
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diyAudio Member
Join Date: Oct 2004
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Potato vs Others
Seems we are getting a panel with 2 boards: one with potato foot prints and the other with standard FF. The Potato FF have "odd" footprints for a FF likely due to their noise reduction designs. (However, the Potato is easier to solder)
Whether you use one or the other, they will run at the exact same speed which is the speed of the clock you feed to it. If you look at their documentation, the Potato part uses clever layout and design to reduce noise while using the same semiconductor fab technology as the standard parts. So in theory, at the same speed, the POTATO will run at lower noise and in theory add less jitter. While less jitter is nice, recent measurements by Ian (I think on his dual board with a standard clock using standard FF) show 5 ps RMS. This is already near noise floor of megabuck equipment. But this being diy, we find satisfaction in over designing our gizmos :-)
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www.hifiduino.wordpress.com |
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17th January 2013, 08:31 PM
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#145 |
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diyAudio Member
Join Date: Feb 2009
Location: Brisbane, Australia
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glt,
I have no problem with the OTT solution to any problem, as long as the user is aware of any technical downside to the OTT solution that they choose. I will expand on what I said earlier in this thread, the Potato FF WILL cause problems if the subsequent cables/DAC are less than EXCELLENT design. As the rise time of the signal will be less than 10% of the period of the clock then the design of the PCB and conductors carrying the signal must be considering of the behaviour of the higher freq and bandwidth of the signal they must now carry. The Potato FF is designed to operate up to GHz frequencies so its tr is much quicker than the other parts. tr/tf is the time for signal to go from 10% - 90% and on the Potato FFs in this case are speced for 0.8ns. See the first point raised here - Red Flags The kicker here is that your point to point wired reclocking with these chips may work but they are going to cause issues with radiated noise and conducted noise added to your system. Faster tr is not the holy grail in low jitter systems IMO though it may contribute. The lower noise design of the chip is meaningless if it is trumped by feeding a very fast tr/tf signal into a system that is simply unequipped to manage a signal of the speed. Hope this helps to clear up some confusion for everyone. Chris Last edited by hochopeper; 17th January 2013 at 08:36 PM. |
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17th January 2013, 10:05 PM
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#146 |
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diyAudio Member
Join Date: Oct 2004
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I agree that my hack is not very good, but works in my system. But aren't we talking about this board? Should we expect less than excellent design from Acko?.
And BTW I also have a Buffalo DAC and suspect most people here are going to use it with a Buffalo or an Acko DAC....
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www.hifiduino.wordpress.com Last edited by glt; 17th January 2013 at 10:18 PM. |
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17th January 2013, 10:13 PM
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#147 |
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is choosing a less facetious title...
diyAudio Member
Join Date: Oct 2009
Location: Brisbane, Australia
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glt, you are missing the point, the signal doesnt stay on this board does it?
and 'working' seems to be completely subjective in this/your case. for instance sending it to less than well grounded, less than well terminated devices may mean worse performance from the faster part, due to lack of ability to deal with such fast signals. again we are not talking about clock speed, though that is a factor. Last edited by qusp; 17th January 2013 at 10:18 PM. |
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17th January 2013, 10:31 PM
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#148 | |
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diyAudio Member
Join Date: Feb 2009
Location: Brisbane, Australia
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Quote:
Cheers, Chris |
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17th January 2013, 10:45 PM
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#149 |
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diyAudio Member
Join Date: Oct 2004
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Aren't we mainly talking about Amanero, Acko reclocking board and either Buffalo or Acko DAC?
I am planning on replacing my reclocker board with this board. What is the specific concern should I have?
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www.hifiduino.wordpress.com |
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17th January 2013, 10:46 PM
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#150 | |
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diyAudio Member
Join Date: Jul 2004
Location: Margaret River West Australia
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Quote:
number9, USA X2 Klipschkid, HK, x1 randytsuch, USA X2 grufti, USA X2 kp93300, malaysia x1 Gricko,Croatia x1 NicMac, Italy x2 xtomm, Czech Republic x1 DeanoUK, UK, x2 Lil' Knight, VN x1 smanz, Spain x1 MisterRogers, USA x2 palmito USA x1 tagheuer Canada x1 shoom UK x1 Diyfan, USA x1 TheShaman, Greece x3 LuisMCP, Spain x2 qusp x1 danny_66 x1 meintan x1 mksung x 1 vanwykca UK x1 ccliu, Taiwan x2 leejh x10 bk856er, USA x1 linuxfan, Australia X1 bigpandahk, Hong Kong x 2 rsotirov, Canada x 1 DQ828, Australia x 1 Esl 63, Sweden, x 1 necplusultra Canada x1 (depends on shipping halfway accross the world) Awh, uk, x1 enantra, Spain x3 mvaldes, Italy x1 SCompRacer, USA x1 t27049215, Taiwan x2 unixdeveloper, USA x1 nik.d, Serbia x1 markus22ch, Switzerland X2 whmok, Singapore x1 vitalica x 2 richard_pc, Taiwan x1 Malvin, USA x1 damohpi, AUS x1 Eric06,France x1 sidiropa, Greece x2 miksi, Serbia x1 glt, USA x1 hochopeper, Aus x1 fredlock, USA X1 Galvani, Country ?? X1 bkdog Australia x1 duc985 Germany x 1 opc Canada x 1 AR2 USA x 2 supra X 2 TOTAL :87 |
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