Shielding

Lostcause · 8th November 2005, 08:54 AM

Hi all, I've heard of the advantages of shielded cable but I dont really want to replace my already expensive investment! If i were to feed it through copper pipe and earth it, would that be sufficient?
Hope someone can help?

wuffwaff · 8th November 2005, 09:49 AM

Hi,

wich cable do you mean? Loudspeaker, interconnect, phono or mains.
Do you have any problems at the moment?

William

Lostcause · 8th November 2005, 10:01 AM

Sorry, that's speaker cables.......about 4 metres of em!
They do seem to pick up hash from something transmitting nearby some times.....maybe CB?

wuffwaff · 8th November 2005, 10:41 AM

Hi,

if you are shure the speakercables are picking ths up a copper pipe could help. I´m not shure where to connect the earth though (at the speaker or at the amplifier side). You can always try both ways....

William

Lostcause · 8th November 2005, 10:53 AM

Looking at it closer they are about 6/7 metres each. I wonder if I should just bond the pipe to true earth like the rest of the plumbing under there?
I've noticed it picks up the locator signal from mobile phones, faint but there non the less.

Christer · 8th November 2005, 10:57 AM

Why are you sure the speaker cables are the problem?

Lostcause · 8th November 2005, 11:04 AM

Everything else is shielded...the amp...interconnects....
Must be the cables as I can induce the interference if I make a phone cal near the speakers, away from the amp.

Christer · 8th November 2005, 11:09 AM

OK, so assume it is the speaker cables. What is happening then, and is shielding the cables the simplest solution? Does the amplifier have a Zobel filter at the output, for instance?

Lostcause · 8th November 2005, 11:14 AM

Yup!

Christer · 8th November 2005, 11:17 AM

OK, so maybe try a Zobel filter at the speaker also and see if that helps.

8th November 2005, 08:54 AM	#1
Lostcause diyAudio Member Join Date: Aug 2005 Location: NW UK	Shielding Hi all, I've heard of the advantages of shielded cable but I dont really want to replace my already expensive investment! If i were to feed it through copper pipe and earth it, would that be sufficient? Hope someone can help?

8th November 2005, 09:49 AM	#2
wuffwaff diyAudio Member Join Date: Aug 2001 Location: Ingolstadt Germany	Hi, wich cable do you mean? Loudspeaker, interconnect, phono or mains. Do you have any problems at the moment? William __________________ een ooievaar is geen konijn want zijn oren zijn te klein!

8th November 2005, 10:41 AM	#4
wuffwaff diyAudio Member Join Date: Aug 2001 Location: Ingolstadt Germany	Hi, if you are shure the speakercables are picking ths up a copper pipe could help. I´m not shure where to connect the earth though (at the speaker or at the amplifier side). You can always try both ways.... William __________________ een ooievaar is geen konijn want zijn oren zijn te klein!

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8th November 2005, 10:01 AM	#3
Lostcause diyAudio Member Join Date: Aug 2005 Location: NW UK	Sorry, that's speaker cables.......about 4 metres of em! They do seem to pick up hash from something transmitting nearby some times.....maybe CB?

8th November 2005, 10:53 AM	#5
Lostcause diyAudio Member Join Date: Aug 2005 Location: NW UK	Looking at it closer they are about 6/7 metres each. I wonder if I should just bond the pipe to true earth like the rest of the plumbing under there? I've noticed it picks up the locator signal from mobile phones, faint but there non the less.

8th November 2005, 10:57 AM	#6
Christer diyAudio Member Join Date: Sep 2002 Location: Sweden	Why are you sure the speaker cables are the problem?

8th November 2005, 11:04 AM	#7
Lostcause diyAudio Member Join Date: Aug 2005 Location: NW UK	Everything else is shielded...the amp...interconnects.... Must be the cables as I can induce the interference if I make a phone cal near the speakers, away from the amp.

8th November 2005, 11:09 AM	#8
Christer diyAudio Member Join Date: Sep 2002 Location: Sweden	OK, so assume it is the speaker cables. What is happening then, and is shielding the cables the simplest solution? Does the amplifier have a Zobel filter at the output, for instance?

8th November 2005, 11:14 AM	#9
Lostcause diyAudio Member Join Date: Aug 2005 Location: NW UK	Yup!

8th November 2005, 11:17 AM	#10
Christer diyAudio Member Join Date: Sep 2002 Location: Sweden	OK, so maybe try a Zobel filter at the speaker also and see if that helps.

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