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DIY DIY cable, Pictures of DIY cables

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ora-ito
post Sep 9 2010, 08:55 AM

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hi,
i've tried to copy KimberKable 4PR design
i'm using Belden teflon cables, silver

8 wire core, 4 wire on each +ve,-ve terminal
total wire resistance at a low of 0.048 ohms using 4 wire measurement on Agilent 3458A multimeter

yet to measure them on Agilent 4284A so i can pump in the 20kHz and measure the (Cp) parallel capacitance, (Ls) series inductance, (Rdc) dc loop resistance, (Xt) total reactance.

This post has been edited by ora-ito: Sep 9 2010, 09:53 AM


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ora-ito
post Sep 9 2010, 01:16 PM

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QUOTE(wui223 @ Sep 9 2010, 01:08 PM)
nice looking, well made cable smile.gif
can help measure my cable as well?
*
haha not easy bro... the equipments are in my company lab.
anyway, no point measuring if the sound is not up to ur ears liking... let ur ears do the judgement instead
ora-ito
post Sep 13 2010, 08:10 AM

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my concept of braiding would be to induce the RLC (resistance, inductance, capacitance) into the signal traveled.

with these 3 variables changed, the tone of the sound will also be filtered.

i can roughly understand how to reduce the resistance which is affected by the cable material (copper/silver) and also the no of wires in parallel.

higher no. of wires in parallel will definitely decrease the resistance (ex. 2 x 0.5 ohm wires in parallel will equal to 0.25ohms)

as for the inductance & capacitance, i suppose it will be on the winding/braiding method. i've yet to understand better at this portion...

i might need to run couple of experiments on diff types of braid and measuring the capacitance + inductance. hope i can come out with some conclusion from that... keep u guys posted smile.gif

This post has been edited by ora-ito: Sep 13 2010, 08:13 AM
ora-ito
post Sep 13 2010, 02:16 PM

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QUOTE(beggarmaster2000 @ Sep 13 2010, 01:41 PM)
[attachmentid=1762881]
my ears hurts from a sharp treble (super clear)after using cat5 cable.... is it because i'm running on 'bright' caps (elna)
*
mine i would say its a totally different...
some noticeable changes when comparing to my flat copper wire vs silver braided DIY wire:
- sound is more forward
- good attack
- natural & clear
i would say it really suites well for classical music

the copper wire i own is more suited for jazz & audiophile vocals..
- warm
- smooth
- sweet & mellow on the sax instruments
ora-ito
post Sep 13 2010, 02:54 PM

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QUOTE(beggarmaster2000 @ Sep 13 2010, 02:41 PM)
yes, all that good stuff and also ear pain from previously(before cable change) unheard frequencies that ear bleed
or is it i playing too loud?
*
probably the synergy matching of your systems/equipment with speakers also do play apart in having a good sound...

if the equipment is already bright and u DIY a bright cable, its like using double edge razor already...

my overall equipment are on on the warm + musical side... so when fitted with a bright cable (silver), becomes quite natural
ora-ito
post Sep 15 2010, 08:13 AM

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hi,
my newly developed DIY cable,
this time using 6 wire, 3 wire on each terminal
plan to use this wire for interconnect...
pending for some purchase on good RCA connectors (most likely WBT)
Attached Image
Attached Image

Wires: Belden, silver
Some measurement results:
(Cp) parallel capacitance: 62 uF @ 20 kHz
(Ls) series inductance: 1.0 µH @ 20 kHz
(Rdc) dc loop resistance: 0.038 Ω
(Xt) total reactance: 0.106 Ω @ 20 kHz

ora-ito
post Sep 15 2010, 08:50 AM

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QUOTE(beggarmaster2000 @ Sep 15 2010, 08:47 AM)
oh, thanks for the advice... my cable sounds great after burn-in =)
did not know that cablese needs to burn also
*
this is quite a myth also...
but they also have equipments for cable burn-in...

the equipment will pump in various frequencies (100hz/1k/10k/20k) to the cable for few hours

quite easy of you have a function generator
or can be easily built from a 555 IC
ora-ito
post Sep 15 2010, 09:32 AM

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QUOTE(wui223 @ Sep 15 2010, 08:52 AM)
U got source for the belden silver?
is it silver wire or silver plated copper wire?
*
sorry, i got wrong info...
its a Thermax, High Temperature Teflon Silver Copper Wires
ora-ito
post Sep 15 2010, 02:23 PM

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QUOTE(beggarmaster2000 @ Sep 15 2010, 01:18 PM)
my calbel was used from years old modem so very very burnt, just took me 3 days to burn on audio
*
no issues for my DIY cable too, bcoz i salvage from my test stations which run for almost 18 hrs/day for 5 yrs before they change a new one smile.gif
ora-ito
post Sep 15 2010, 02:34 PM

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QUOTE(beggarmaster2000 @ Sep 15 2010, 02:25 PM)
@ora-ito
strange it sounds super razor sharp at first...
*
hmm, i'm trying to think logically and theoretically...
here are my views:
- probably there might be some discharge on the capacitance of the cable after it was first made
- influence of electric field around the conductor (pls read more here to understand better http://www.audioquest.com/pdfs/dbs_anaology_field.pdf)
i used to own an Audioquest CV-4 DBS 48v but sold it off as it didn't really match with my system... thats how i came across this learning of electric field in conductor

This post has been edited by ora-ito: Sep 15 2010, 02:35 PM

 

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