Main Forums >> DIY, Electronics, Studio Design & Acoustics
        Print Thread

Pages: 1
mjfe2



Joined: 11/10/09
Posts: 618
Loc: Cambridge, UK
How to solder twin cable to RCA connectors
      #987479 - 15/05/12 07:37 AM
I've been having problems with an SPDIF connection that uses a hifi phono cable (dropouts etc.) so I decided to make my own from some foil-screened twin cable I found lying around (Canford FST-F). I've bought Neutrik RCA connectors, so all the components are quality. Is there anything I need to be careful with when making this cable and what do I do with the second unused core?


Post Extras: Print Post   Remind Me!   Notify Moderator     Back to top
Hugh RobjohnsAdministrator
SOS Technical Editor


Joined: 25/07/03
Posts: 22305
Loc: Worcestershire
Re: How to solder twin cable to RCA connectors new [Re: mjfe2]
      #987493 - 15/05/12 08:20 AM
There are two choices.

1. Wire it to the centre pin along with the primary core

2. Wire it to the sleeve along with the screen.

Either is absolutely fine... but personally, I'd go for option 1.

Hugh

--------------------
Technical Editor, Sound On Sound


Post Extras: Print Post   Remind Me!   Notify Moderator     Back to top
Exalted Wombat



Joined: 06/02/10
Posts: 5927
Re: How to solder twin cable to RCA connectors new [Re: mjfe2]
      #987498 - 15/05/12 08:38 AM
Though a SPDIF cable really ought to be 75 ohm coax, in practice the proverbial "piece of wet string" generally works fine! I'm not sure your cable will be any closer to the correct spec. than a cheap hi-fi cable, and a standard soldered phono connector, when it won't be subjected to physical stress, does the job just as well as a fancy one.

What exactly is the "etc." part of "drop-outs etc."? You may have a damaged cable. But could you have a clocking issue?


Post Extras: Print Post   Remind Me!   Notify Moderator     Back to top
mjfe2



Joined: 11/10/09
Posts: 618
Loc: Cambridge, UK
Re: How to solder twin cable to RCA connectors new [Re: Exalted Wombat]
      #987509 - 15/05/12 08:54 AM
Quote Exalted Wombat:

Though a SPDIF cable really ought to be 75 ohm coax, in practice the proverbial "piece of wet string" generally works fine! I'm not sure your cable will be any closer to the correct spec. than a cheap hi-fi cable, and a standard soldered phono connector, when it won't be subjected to physical stress, does the job just as well as a fancy one.

What exactly is the "etc." part of "drop-outs etc."? You may have a damaged cable. But could you have a clocking issue?




Not really sure why I added the 'etc'! Basically, I use the cable to connect my CD player to my Fireface and very occasionally the sound just drops out until I fiddle with the cable.

The one I'm making is to connect two things in a rack case that I'll be using on location. Once plugged in it won't be moved, but seeing as I'll be in and out plugging in XLRs and stuff I can't guarantee I won't knock it by accident!


Post Extras: Print Post   Remind Me!   Notify Moderator     Back to top
Exalted Wombat



Joined: 06/02/10
Posts: 5927
Re: How to solder twin cable to RCA connectors new [Re: mjfe2]
      #987528 - 15/05/12 09:58 AM
Quote mjfe2:

Not really sure why I added the 'etc'! Basically, I use the cable to connect my CD player to my Fireface and very occasionally the sound just drops out until I fiddle with the cable.




Just swap in another standard hi-fi cable that ISN'T broken then!


Post Extras: Print Post   Remind Me!   Notify Moderator     Back to top
James PerrettModerator



Joined: 10/09/01
Posts: 10881
Loc: The wilds of Hampshire
Re: How to solder twin cable to RCA connectors new [Re: Exalted Wombat]
      #987530 - 15/05/12 10:07 AM
Better still, buy a video cable (the ones with yellow phono connectors). They're not expensive.

James.

--------------------
JRP Music - Audio Mastering and Restoration.
http://www.jrpmusic.net


Post Extras: Print Post   Remind Me!   Notify Moderator     Back to top
Hugh RobjohnsAdministrator
SOS Technical Editor


Joined: 25/07/03
Posts: 22305
Loc: Worcestershire
Re: How to solder twin cable to RCA connectors new [Re: Exalted Wombat]
      #987552 - 15/05/12 11:04 AM
Although by making his own cables it can be made to the exact required length...

hugh

--------------------
Technical Editor, Sound On Sound


Post Extras: Print Post   Remind Me!   Notify Moderator     Back to top
Pages: 1

Rate this thread

Jump to

Extra Information
0 registered and 10 anonymous users are browsing this forum.

Moderator:  David Etheridge, James Perrett, zenguitar, Martin Walker, Forum Admin, Hugh Robjohns, Zukan, Frank Eleveld, SOS News Editor,  
Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled
Rating:
Thread views: 2961

December 2014
On sale now at main newsagents and bookstores (or buy direct from the
SOS Web Shop)
SOS current Print Magazine: click here for FULL Contents list
Click image for December 2014
DAW Tips from SOS

 

Home | Search | News | Current Issue | Tablet Mag | Articles | Forum | Blog | Subscribe | Shop | Readers Ads

Advertise | Information | Privacy Policy | Support | Login Help

 

Email: Contact SOS

Telephone: +44 (0)1954 789888

Fax: +44 (0)1954 789895

Registered Office: Media House, Trafalgar Way, Bar Hill, Cambridge, CB23 8SQ, United Kingdom.

Sound On Sound Ltd is registered in England and Wales.

Company number: 3015516 VAT number: GB 638 5307 26

         

All contents copyright © SOS Publications Group and/or its licensors, 1985-2014. All rights reserved.
The contents of this article are subject to worldwide copyright protection and reproduction in whole or part, whether mechanical or electronic, is expressly forbidden without the prior written consent of the Publishers. Great care has been taken to ensure accuracy in the preparation of this article but neither Sound On Sound Limited nor the publishers can be held responsible for its contents. The views expressed are those of the contributors and not necessarily those of the publishers.

Web site designed & maintained by PB Associates | SOS | Relative Media