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Old 11th July 2017, 12:42 PM   #21
soundcheck is offline soundcheck  Germany
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"Better cables"

Obviously that's a topic on its own.

iFi uses coax + ferrite bead.

There are some advantages by using coax.

Decades ago Thorsten Loesch - the man behind the iPower - wrote an article on TNT about interconnects.

He applies pretty much the same principles for the iPower DC cable nowadays.

There are probably better choices. But the coax might be a good (or the best) compromise.

However. The "targeted" retail price will probably dictate your choice.

If you go for a rather cheap and/or rather inflexible solution, I'd appreciate if you'd keep the DC outlet DIY friendly.
Meaning: I should be able to rather easily open the case and attach (even soldering is OK ) my own custom cable!


Cheers

Last edited by soundcheck; 11th July 2017 at 12:47 PM.
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Old 14th July 2017, 11:56 AM   #22
cdsgames is offline cdsgames  Canada
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How about DC jack...nickel or brass ?
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Old 14th July 2017, 12:20 PM   #23
soundcheck is offline soundcheck  Germany
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Gold?


Probably a nickel plated brass core would do.
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Old 14th July 2017, 12:27 PM   #24
cdsgames is offline cdsgames  Canada
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Ok for nickel /brass

Our noise circuit was finalized...(active). In simulations we get 40-50db in 0-20Khz, about 30db at 100Khz and 20db at 200Khz.Of course we have also passive filtering (LC).

We are pretty sure to have excellent noise specs output and input (mains)
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Old 19th July 2017, 07:34 AM   #25
ontoaba is offline ontoaba  Indonesia
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If you want tor reach "Best" cable and connector, it should be nano tube carbon. it conduct like copper and acid resistant as glass, also strong as steel. gold are soft.
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Old 19th July 2017, 08:47 AM   #26
soundcheck is offline soundcheck  Germany
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Quote:
Originally Posted by ontoaba View Post
If you want tor reach "Best" cable and connector, it should be nano tube carbon. it conduct like copper and acid resistant as glass, also strong as steel. gold are soft.
If you say so. That's the reason I said to keep it DIY-friendly. This way we all can use our
own favorite wiring - just in case.

Price/Performance ratio will be one of the key aspects. For now Allo has shown to
come up with good quality products at reasonable prices without using boutique parts.
From my perspective I think that's a good approach.
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Old 19th July 2017, 09:17 AM   #27
cdsgames is offline cdsgames  Canada
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Yeap I think we will skip the nano tube cabling...

One issue we have, is that mold manufacturer is saying that plastic casing has to be glued. So customer cannot open. I think its best to get the cables correct from the start.

I don't see a way to open it.
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Old 21st July 2017, 09:04 AM   #28
soundcheck is offline soundcheck  Germany
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Ok. That's the same issue I have with the iPower.

A jack and/or a screw terminal right at the PS (without any cable) might be the best option to avoid
destroying the case. You'd just have to add a separate cable to the box.
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Old 2nd August 2017, 01:12 PM   #29
cdsgames is offline cdsgames  Canada
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In the next 3 weeks we will have 5 units assembled for testing. Will try to post the results.
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Old 2nd August 2017, 01:24 PM   #30
kaputt is online now kaputt  Germany
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Quote:
Originally Posted by soundcheck View Post
1. Don't forget that the "numerous" cable parameters matter big time
This plus the right choice of plugs might have ten times more impact than
your observed oscillations.

2. A good balance of risetime plus current delivery has to be found
Overregulation, overdamping/-filtering, high ESR, low buffer capacity
might be some of the things to eliminate as much as possible.
I fought this by adding low ESR buffer capacity to the iFi.
Are you serious about this? In case you are I'll comment on that content.
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