Shielded cat 5 interconnects? - diyAudio
Go Back   Home > Forums > General Interest > Everything Else

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

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 17th January 2008, 05:34 PM   #1
diyAudio Member
 
MikeHunt79's Avatar
 
Join Date: Aug 2003
Location: Bristol, UK
Default Shielded cat 5 interconnects?

Hi,

I have a load of shielded cat 5, 100's of meters of the stuff...

Anyway, I want to run 4 channels of audio thru my car from my crossover to my amp.

Would shielded cat5 make a good interconnect between the 2? Should I wire the shield up to anything or leave it disconnected?

How about connectors? I could use normal RCA's, but I was wondering if I could use the proper cat5 connectors? I don't mind cutting a hole in my amp as it's a DIY thing.
  Reply With Quote
Old 17th January 2008, 06:34 PM   #2
droptop is offline droptop  United States
diyAudio Member
 
Join Date: Jan 2008
im currently using shielded cat5 for my aux in. i don't see a problem with it, and using a cat5 connector instead of rca's- it would be a lot more compact. someone will chime in if its a bad idea.
  Reply With Quote
Old 17th January 2008, 08:54 PM   #3
diyAudio Member
 
MikeHunt79's Avatar
 
Join Date: Aug 2003
Location: Bristol, UK
Nice... What cat5 socket did you use?

Was it something like this:

http://uk.farnell.com/jsp/search/pro...sp?sku=1202031

I'm not 100% sure if this will work with a normal connector, or only ethercon connectors....
  Reply With Quote
Old 17th January 2008, 09:20 PM   #4
droptop is offline droptop  United States
diyAudio Member
 
Join Date: Jan 2008
i didn't use a socket, just used molex connectors on the pinout of the head-unit where the CD player usually goes, and on the other end i spliced it into the line of a regular male interconnect cable. it allows me to play anything in my car that has a standard 1/8" plug. (trying to keep things looking stock, as its a convertible- keeping the factory head unit was a top priority.
  Reply With Quote
Old 17th January 2008, 10:16 PM   #5
diyAudio Member
 
MikeHunt79's Avatar
 
Join Date: Aug 2003
Location: Bristol, UK
Quote:
Originally posted by droptop
i didn't use a socket, just used molex connectors on the pinout of the head-unit where the CD player usually goes, and on the other end i spliced it into the line of a regular male interconnect cable. it allows me to play anything in my car that has a standard 1/8" plug. (trying to keep things looking stock, as its a convertible- keeping the factory head unit was a top priority.
Gotcha - I've found an old Ethernet card that I can butcher for it's socket, so I'll give it a go.
  Reply With Quote
Old 18th January 2008, 10:38 PM   #6
KP11520 is offline KP11520  United States
diyAudio Member
 
KP11520's Avatar
 
Join Date: Apr 2007
Hi Mike,

You know here in America, back in 94, I worked for a network integrator. We sold a large ITT Screen (shielded) Cat-5 Cabling plant to a big Tea company. So the Screen had to have a "Drain" which meant the shielding had to be attached to a solid ground (Building Steel). So this meant that the Cat-5 plugs and jacks had to be special to offer a conduit for the signals the shielding absorbed to be sent to the ground or they could cause interference in the Ethernet Network. The shielding was a mylar foil and didn't play nice with solder and required a mechanical connection. The cable plant was tested at a much more strict test level and was guaranteed to outperform regular Cat-5 because of the protection the properly grounded shielding offered.

So if you are going to use this, do it for the right reasons other than just because you have it! Find out if it will out perform other methods and obviously make sure the shielding works for you and not against you! Find a way to ground the shielding to the car and not the amp or head or crossover. They each should have their own ground to the chassis steel as well. iIf you don't attach to a ground, it will actually attract noise and interference and who know how that will affect the signals over the four pairs of TWISTED!

BTW, What did you ever get for Studio Monitors?

Regards//Keith
__________________
If Wile E. Coyote had enough money to buy all that ACME ****, why didn't he just buy dinner?
  Reply With Quote
Old 19th January 2008, 01:41 PM   #7
diyAudio Member
 
Speedskater's Avatar
 
Join Date: Sep 2002
Location: Lakewood, Ohio
For an unbalanced interconnect in a high EMI/RFI environment, Mylar foil and a drain wire is not the way to go.
__________________
Kevin
  Reply With Quote
Old 20th January 2008, 01:49 AM   #8
diyAudio Member
 
MikeHunt79's Avatar
 
Join Date: Aug 2003
Location: Bristol, UK
Quote:
Originally posted by KP11520
Hi Mike,

You know here in America, back in 94, I worked for a network integrator. We sold a large ITT Screen (shielded) Cat-5 Cabling plant to a big Tea company. So the Screen had to have a "Drain" which meant the shielding had to be attached to a solid ground (Building Steel). So this meant that the Cat-5 plugs and jacks had to be special to offer a conduit for the signals the shielding absorbed to be sent to the ground or they could cause interference in the Ethernet Network. The shielding was a mylar foil and didn't play nice with solder and required a mechanical connection. The cable plant was tested at a much more strict test level and was guaranteed to outperform regular Cat-5 because of the protection the properly grounded shielding offered.

So if you are going to use this, do it for the right reasons other than just because you have it! Find out if it will out perform other methods and obviously make sure the shielding works for you and not against you! Find a way to ground the shielding to the car and not the amp or head or crossover. They each should have their own ground to the chassis steel as well. iIf you don't attach to a ground, it will actually attract noise and interference and who know how that will affect the signals over the four pairs of TWISTED!

BTW, What did you ever get for Studio Monitors?

Regards//Keith
I'm sure I can ground the shielding, as my cat5 wire also has a ground wire that it touching the film all the way down the cable. I can simply extend this wire, and connect it to the chassis.

I've got normal cable in there at the moment, but I can see how the cat5 compares and if it gives better results then I'll take the normal wire out. Once I get my crossover sorted I shuold be able to get testing...

I still haven't got around to getting some good studio monitors... They are on the backburner right now, I've got too many projects going on it seems. :/ Sennheiser HD580's are pretty good for now, but they don't have the same soundstage that speakers do...
Quote:
Originally posted by Kevin Graf
For an unbalanced interconnect in a high EMI/RFI environment, Mylar foil and a drain wire is not the way to go.
So what, in your opinion, would be the way to go?
  Reply With Quote
Old 20th January 2008, 12:35 PM   #9
diyAudio Member
 
Speedskater's Avatar
 
Join Date: Sep 2002
Location: Lakewood, Ohio
I use co-ax with a heavy braid and robust connectors.
A for layer is OK but the drain wire sucks.
I get the co-ax from the boating shop (Ancor brand) it's designed for the harsh environment (wet) found in a boat.
__________________
Kevin
  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
Shielded Enclosure vs. Not ZenCow Chip Amps 3 18th May 2008 08:01 PM
shielded vs. non-shielded mytool4u Instruments and Amps 12 7th July 2005 10:12 PM
Design for SF W14 Shielded MTM Danse Multi-Way 0 15th October 2004 12:37 AM
Shielded Wiring ble0t Parts 4 11th August 2004 05:34 AM
Shielded transformer - DIY 2Bak Solid State 3 12th February 2003 04:13 PM


New To Site? Need Help?

All times are GMT. The time now is 02:24 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2