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DIY 12V cable from LPS to picoPSU: tips? Worth complicating?


LewinskiH01
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I will be replacing the 12V connector in my audio PC (the Xeon listed in my signature) and hence will need to reterminate the 1 meter link between the lab LPS and the computer. Right now it's a pair of heavy 220V mono wires in regular PVC coating. 

 

Is it worth going Teflon coated for this?

Any geometric configurations I should employ or avoid? Twisted pair? Shielded or not? 

 

Don't want to overcomplicate this unnecessarily but also wouldn't want to neglect low hanging fruit.

 

Thank you and happy New Year. 

Roon Server: general purpose Gigabyte GA-Z170X UD5, i5 6600, Crucial MX200 SSD, HyperX 1x16GB RAM, Win 10 Pro, convolving in Roon digital xo + DRC + upsampling. Output through ethernet.

Roon Client AudioPC: Uptone etherRegen (with LPS 1.2) into Intel S1200KPR, Xeon E3 1265lv2, Crucial V4 SSD for OS, 8GB ECC RAM, Streacom FC8 Evo case, lab linear PSU, Windows Server 2019, AudioPhil's Optimizer, Acourate (digital xo, room correction)

Rest of Chain: Lynx Hilo as 8-channel DAC, McIntosh MC275 MkIV for mids & treble, Hypex UcD400HG for midbass into DIY dipoles 18" midbass/2x8" mids/AMT tweeter, 2 DIY 12" Rythmik subs, Equi=Core 1800 balanced power, dedicated power lines, room treatments

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I always twist my AC lines...

Apart from that, make sure you're gauged properly for the length.

Conductor insulation typically is a product of the environment you're running your cables in. Indoors, it's not critical.

Heck, my Dynaco amps transformers use cloth insulation!

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This is 12V D.C., not A.C.

 

The pc takes 2.5A and it's a 1 meter link so I think shouldn't be a big deal in terms of gauge.

 

Some theories about insulation about affecting skin effects, etc. Not sure if a big deal here.

Roon Server: general purpose Gigabyte GA-Z170X UD5, i5 6600, Crucial MX200 SSD, HyperX 1x16GB RAM, Win 10 Pro, convolving in Roon digital xo + DRC + upsampling. Output through ethernet.

Roon Client AudioPC: Uptone etherRegen (with LPS 1.2) into Intel S1200KPR, Xeon E3 1265lv2, Crucial V4 SSD for OS, 8GB ECC RAM, Streacom FC8 Evo case, lab linear PSU, Windows Server 2019, AudioPhil's Optimizer, Acourate (digital xo, room correction)

Rest of Chain: Lynx Hilo as 8-channel DAC, McIntosh MC275 MkIV for mids & treble, Hypex UcD400HG for midbass into DIY dipoles 18" midbass/2x8" mids/AMT tweeter, 2 DIY 12" Rythmik subs, Equi=Core 1800 balanced power, dedicated power lines, room treatments

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4 hours ago, WuNgUn said:

12VDC...then I would use star quad cable, and pair the wires together that are across from one another... 

Something like 18AWG should be fine. 

Yes, DIY, star quad is the way to go, see the John Swenson thread on making your own.  

I would like to add, keeping the length as short as possible also helps.

 

 

(JRiver) Jetway barebones NUC (mod 3 sCLK-EX, Cybershaft OP 14)  (PH SR7) => mini pcie adapter to PCIe 1X => tXUSBexp PCIe card (mod sCLK-EX) (PH SR7) => (USPCB) Chord DAVE => Omega Super 8XRS/REL t5i  (All powered thru Topaz Isolation Transformer)

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Thanks for the pointers! Good stuff. And rather unusual to get consensus in anything audio :)

Roon Server: general purpose Gigabyte GA-Z170X UD5, i5 6600, Crucial MX200 SSD, HyperX 1x16GB RAM, Win 10 Pro, convolving in Roon digital xo + DRC + upsampling. Output through ethernet.

Roon Client AudioPC: Uptone etherRegen (with LPS 1.2) into Intel S1200KPR, Xeon E3 1265lv2, Crucial V4 SSD for OS, 8GB ECC RAM, Streacom FC8 Evo case, lab linear PSU, Windows Server 2019, AudioPhil's Optimizer, Acourate (digital xo, room correction)

Rest of Chain: Lynx Hilo as 8-channel DAC, McIntosh MC275 MkIV for mids & treble, Hypex UcD400HG for midbass into DIY dipoles 18" midbass/2x8" mids/AMT tweeter, 2 DIY 12" Rythmik subs, Equi=Core 1800 balanced power, dedicated power lines, room treatments

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