I think specifically Lundhal has a mu metal version of the LL1948? LL1949 with primaries in series?
I’d like to see you try the Cinemag humbuckers that I have meanwhile. Want to? T
I’m open to try anything. I have 2 units so I can A/B different configurations.
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JK, I plan to send you the LL1949 I have and the humbuckers today in fact in a Fedex small box. -I’m hoping you can do some tests and see where they land vs your baseline. While you wait for the LL1948 
Some big news for the DAC project- Audience has agreed to treat the air core pure Cu inductors I have for the DACs. That’s very gracious of them to help out a little guy like me and I think this could be huge for us in terms of sonics. It’s not cheap per se but reasonable, considering. And turnaround should be reasonable as well, about 2 weeks I expect.
So there will be a few weeks delay here while we get the new, improved air cores in. The initial 16 of them will go out for treating today, enough for DAC1 and DAC2.
-Knowing what a few inches of the “mere” wire does, I’m super excited about the likely very big further elevation in sq from this. After all, the inductor is big roll of pure Cu wire fundamentally. But hey, that’s why we do it- improved sq T
Sounds like a good plan. Are you talking about the regulator inductors?
Talking about the air core inductors. T
Hi @Turbotk , @jkrichards , @adriaan, @vkennedy61,
Any suggestions on which “good 15nF film cap” to use on C704? Does it have to be oriented to have the +/- correct and what voltage is needed?
I’m thinking of having it put in when the transformer is upgraded.
I appreciate your help.
-Alan
I knew I forgot something
ECH-U1H153JX5 was the original, the ECH-U1H153GX5 is a 2% version and would be fine.
Older versions of them seem to still be available: ECH-U1H153JB5 and ECH-U1H153GB5 and would probably be fine.
They are non-polar.
They are 50V which is purposefully “oversized” for this application.
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Thanks!
Good Spot.
If the exact same cable in the DS II can’t be used, sure there would be a compatible one of the same quality?
Looks like an adapter kit should become available 
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Hi @Turbotk , @jkrichards , @adriaan, @vkennedy61, @lufubu, @minimalist
Does anyone have a picture of the location for C704? Is it is just one capacitor?
You find the spot and solder in the SMD. No other work is necessary?
My DAC is behind a bunch of wires and closed-up. I looked through pictures in old posts, but couldn’t find it.
Again, I appreciate your help. Learning how the DAC works is a fun journey 
-Alan
These film caps are very sensitive to heat. You’d probably destroy them electrically and possibly physically with a soldering iron unless you’ve had lots of experience. If you have an experienced surface mount reworker doing it, then a gentle reminder to them that these are film caps should be enough. but in other cases a lot of care is required.
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Thanks!
I was looking in the wrong section of the board. l’ll have an electronics shop do the soldering and let them know a being careful with the heat.
-Alan
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OK folks, I bought the @jkrichards External Power Board for the DS DAC.
What is the consensus on a good but not too esoteric power supply?
Please be specific with your input.
TIA.
It’s also on eBay:
What are the correct power supply specifications?
I am a newb when it comes to this stuff and no instructions were included regarding the selection of a power supply to go with the new board.
Thanks Vince.
PS: The cable connections for the item you provided the link to don’t look like they are compatible with the power board’s input.
You need a GX16-2 on the card end of the cable.
In the description they wrote:
“if you need other Size DC head, Please contact us”
Do the RCA outlets use C704 or is C704 for the XLR output only?
-Alan
The RCA outputs are in parallel with one half of the XLR outputs. C704 is across the output transformer and hence affects everything down stream including all outputs.
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