Mic cable as single ended interconnects - diyAudio
Go Back   Home > Forums > Source & Line > Analog Line Level

Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 21st February 2015, 12:45 AM   #1
davym is offline davym  Europe
diyAudio Member
 
davym's Avatar
 
Join Date: Jul 2013
Location: Caledonia
Default Mic cable as single ended interconnects

Any thoughts about using ballanced mic cable for long interconnects in a single ended setup, like what to do with the screen? Is it best left floating? attached to signal ground at one end?

I'm just curious about noise pickup through interconnect screen and if there are any advantages in using a ballanced cable in this way instead of a coaxial one in runs of around 5 metres.
__________________
MTV is to music what KFC is to chicken.
  Reply With Quote
Old 21st February 2015, 01:58 AM   #2
diyAudio Member
 
Destroyer OS.'s Avatar
 
Join Date: Nov 2005
No, it'll provide less shielding unless the shield acts as ground for both; which some equipment that's ok and others it isn't.

Coaxial shield doesn't stop noise so much as it takes advantage of skin effect, for audio. It's because the shield, the return, is also playing the impedance game among other things for single ended.

Balanced on the other hand take advantage of a low impedance path for the shield so it actually attenuates and differs noise to a high level.

The properties of balanced cable is a bit different, so I wouldn't expect them to work necessarily.

Connecting a shield at one end to ground provides a drain, but no attenuation to speak of so it's uses are insignificant compared to what balanced does...
  Reply With Quote
Old 21st February 2015, 09:49 AM   #3
DF96 is offline DF96  England
diyAudio Member
 
Join Date: May 2007
A grounded screen will provide protection from audio frequency electric fields. The twisted pair would provide some protection from audio frequency magnetic fields, provided that the sending end is 'floating'. This is how tonearm wiring works, or a microphone, but probably not a single-ended source. I would use coax for unbalanced connections.
  Reply With Quote
Old 21st February 2015, 12:39 PM   #4
davym is offline davym  Europe
diyAudio Member
 
davym's Avatar
 
Join Date: Jul 2013
Location: Caledonia
Thanks i normally only use coax, there are some who claim great things about pseudo balanced interconnects where the screen is connected to ground at one end but they don't all agree on which end.

I thought it was probably just another load of rubbish but if anyone here thinks differently, please let me know.
__________________
MTV is to music what KFC is to chicken.
  Reply With Quote
Old 21st February 2015, 02:11 PM   #5
davym is offline davym  Europe
diyAudio Member
 
davym's Avatar
 
Join Date: Jul 2013
Location: Caledonia
It seems quite a number of cable manufacturers sell pseudo balanced interconnects, Chord being one of them. The only advantage i can see is that i could use cheap mic cable which has low capacitance. That could be an advantage with 15 foot inters.

Hi Fi Terminology The Chord Company

If you scroll down to - co-axial cable, Chord say they feel that analogue signals can be better carried via a pseudo balanced configuration cable. I notice they dont attempt to explain why they "feel" this to be the case.
__________________
MTV is to music what KFC is to chicken.
  Reply With Quote
Old 21st February 2015, 02:56 PM   #6
davym is offline davym  Europe
diyAudio Member
 
davym's Avatar
 
Join Date: Jul 2013
Location: Caledonia
I have had signal cables running alongside power cable at times, this video makes me think....

https://www.youtube.com/watch?NR=1&f...&v=DOoyrsi6ctk
__________________
MTV is to music what KFC is to chicken.
  Reply With Quote
Old 21st February 2015, 03:22 PM   #7
diyAudio Member
 
Join Date: Jan 2013
Location: Oregon City, Oregon
I used hundreds of feet of mic cable to wire line level signals between rooms of my house. Works just fine.
  Reply With Quote
Old 21st February 2015, 06:02 PM   #8
davym is offline davym  Europe
diyAudio Member
 
davym's Avatar
 
Join Date: Jul 2013
Location: Caledonia
Quote:
Originally Posted by jplesset View Post
I used hundreds of feet of mic cable to wire line level signals between rooms of my house. Works just fine.
Thanks, how do you connect the screen?
__________________
MTV is to music what KFC is to chicken.
  Reply With Quote
Old 21st February 2015, 07:46 PM   #9
diyAudio Member
 
Join Date: Jan 2013
Location: Oregon City, Oregon
Screen connected to audio ground, simplest thing I could do... Done most recently, 6 years ago, previously 20 years ago in a previous house.
  Reply With Quote
Old 21st February 2015, 09:38 PM   #10
davym is offline davym  Europe
diyAudio Member
 
davym's Avatar
 
Join Date: Jul 2013
Location: Caledonia
Thanks for the info.
__________________
MTV is to music what KFC is to chicken.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Speaker cable/wire/interconnects bullpeters Full Range 13 10th July 2012 03:06 PM
Single tube, Single ended, 20W, impossible? dannydanger Tubes / Valves 35 3rd April 2012 01:19 AM
Single Ended, Single driver: In-room distortion measurements Gerrit Boers Full Range 4 27th November 2007 08:12 AM
Anyone play with the Zen Single-Stage Single-Ended Class A? Rino odorico Pass Labs 13 29th August 2002 09:01 AM


New To Site? Need Help?

All times are GMT. The time now is 10:57 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.
Copyright 1999-2015 diyAudio

Content Relevant URLs by vBSEO 3.3.2