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Old 23rd September 2012, 06:16 AM   #141
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Implementing them in the design is easy but I just won't use them as I really hate them. Who invents a connector that can only be inserted 5 times ?

It contradicts with my ideas of longevity. I just won't use them even it they would be the best solution.
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Old 23rd September 2012, 07:06 PM   #142
qusp is offline qusp  Australia
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Quote:
Originally Posted by jean-paul
Who invents a connector that can only be inserted 5 times ?
I dunno, someone who knows what they are doing with their layout before plugging it in the first time =)

besides i'd lay money that even after the 20th time you would still have better line termination than what you have with a pinheader. how good is the impedance of a molex header after using it 5 times? how about the impedance of a solder joint that has to be made, disconnected, made disconnected 5 times? anyway they are dead easy to put in parallel with another connector type, people can use them, or not.

also being that they are completely SMD and tiny, you can remove them with a blob of solder in seconds without any damage to the PCB and replace. they arent exactly expensive if you really find that you change the layout of your case 5 times (realistically 10 or more if you use the right tool, or make one yourself)
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Old 26th September 2012, 10:04 PM   #143
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Hi qusp
Could you point us a link and ref to those connector's ?
Thanks
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Old 26th September 2012, 10:08 PM   #144
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Hirose u.fl is the connector type referred to above.

link

Edit: as pointed out below, there are alternative manufacturers of compatible connectors, these mostly refer to the connector as 'umcc' I believe.

Last edited by hochopeper; 26th September 2012 at 10:18 PM.
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Old 26th September 2012, 10:09 PM   #145
bcmbob is offline bcmbob  United States
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Try This Cable Assemblies | Coaxial, RF | DigiKey

or this
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Last edited by bcmbob; 26th September 2012 at 10:17 PM.
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Old 26th September 2012, 10:33 PM   #146
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Great, thanks, it helps a lot
Which diameter will be suitable for I2S purpose ?
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Old 10th October 2012, 01:15 PM   #147
Stixx is offline Stixx  Germany
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Although the party has already moved on to V3 of the Subbu/JP-DAC I recently connected the original version of the board to a newly built Salas shunt reg (putting out 5V DC).

It just has max. 10 hours on it but I am very positively surprised as the ES9023 DAC is a very neutral and good sounding performer! Comparing to my Audiosector DAC (featuring a Bobken-style reg and BG throughout) I can say that JP’s ES9023 is doing extremely well… in fact it’s hard to pick the better one of the two.
Both qualify as very natural and authentic sounding DAC’s (to my ears of course) with a credible soundstage and very good timbre. The Audiosector might have a bit more impact and slightly better bass whereas the ES9023 is super-neutral and has a very smooth treble while retaining all the details you’d ever want.

So hats off to Jean-Paul and Subbu for their good work!

PS. pic shows the DAC just connected to power while I was testing the shunt reg...
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Old 10th October 2012, 09:54 PM   #148
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Thanks for the positive feedback, it is really appreciated. Please try the V3. I tried to improve the already good 2.6 and have sent some files to Subbu. If he agrees that design will be the final V3. We had our troubles finding good replacements for BG caps so the waiting is for the first prototypes for testing...
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Last edited by jean-paul; 10th October 2012 at 10:01 PM.
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Old 12th October 2012, 01:09 AM   #149
qusp is offline qusp  Australia
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Quote:
Originally Posted by korben69 View Post
Great, thanks, it helps a lot
Which diameter will be suitable for I2S purpose ?
the diameter of the one linked by hochopeper. or you mean the cable? it doesnt really matter, I like the really fine black ones, but thats more for visual appeal. they are all 50ohms µCoax
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Old 12th October 2012, 03:25 AM   #150
syklab is offline syklab  Hong Kong
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U.fl cable is not cheap, anyone got a good supplier with reasonable price on this cable?
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