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  #1   Report Post  
Joseph Delvey, Jr.
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well. Now
I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?

Thanks!

  #2   Report Post  
Geoff Wood
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

Joseph Delvey, Jr. wrote:
Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well.
Now I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?



Don't use braided cable., The elctrons get dizzy, and some lose their way -
meaning some of the music arrives before and after other bits. Some get so
confused they end up back at th ampifier, and gradually fill up all the
capacitors which will then require demagnetisation.

geoff


  #3   Report Post  
Geoff Wood
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

Joseph Delvey, Jr. wrote:
Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well.
Now I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?



Don't use braided cable., The elctrons get dizzy, and some lose their way -
meaning some of the music arrives before and after other bits. Some get so
confused they end up back at th ampifier, and gradually fill up all the
capacitors which will then require demagnetisation.

geoff


  #4   Report Post  
Geoff Wood
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

Joseph Delvey, Jr. wrote:
Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well.
Now I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?



Don't use braided cable., The elctrons get dizzy, and some lose their way -
meaning some of the music arrives before and after other bits. Some get so
confused they end up back at th ampifier, and gradually fill up all the
capacitors which will then require demagnetisation.

geoff


  #5   Report Post  
Carl Valle
 
Posts: n/a
Default Braided shield for ribbon spkr cables?


"Geoff Wood" -nospam wrote in message
...
Joseph Delvey, Jr. wrote:
Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well.
Now I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?



Don't use braided cable., The elctrons get dizzy, and some lose their

way -
meaning some of the music arrives before and after other bits. Some get

so
confused they end up back at th ampifier, and gradually fill up all the
capacitors which will then require demagnetisation.

geoff



Cannot you use tin foil? Or did you use it all up for your helmet? Perhaps
you could save gum wrappers or pie tins? - Maybe you should sheild the
listening room with lead sheeting? Be sure to use stainless roofing nails to
hold it up...

Carl




  #6   Report Post  
Carl Valle
 
Posts: n/a
Default Braided shield for ribbon spkr cables?


"Geoff Wood" -nospam wrote in message
...
Joseph Delvey, Jr. wrote:
Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well.
Now I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?



Don't use braided cable., The elctrons get dizzy, and some lose their

way -
meaning some of the music arrives before and after other bits. Some get

so
confused they end up back at th ampifier, and gradually fill up all the
capacitors which will then require demagnetisation.

geoff



Cannot you use tin foil? Or did you use it all up for your helmet? Perhaps
you could save gum wrappers or pie tins? - Maybe you should sheild the
listening room with lead sheeting? Be sure to use stainless roofing nails to
hold it up...

Carl


  #7   Report Post  
Carl Valle
 
Posts: n/a
Default Braided shield for ribbon spkr cables?


"Geoff Wood" -nospam wrote in message
...
Joseph Delvey, Jr. wrote:
Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well.
Now I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?



Don't use braided cable., The elctrons get dizzy, and some lose their

way -
meaning some of the music arrives before and after other bits. Some get

so
confused they end up back at th ampifier, and gradually fill up all the
capacitors which will then require demagnetisation.

geoff



Cannot you use tin foil? Or did you use it all up for your helmet? Perhaps
you could save gum wrappers or pie tins? - Maybe you should sheild the
listening room with lead sheeting? Be sure to use stainless roofing nails to
hold it up...

Carl


  #8   Report Post  
Geoff Wood
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

Carl Valle wrote:
"Geoff Wood" -nospam wrote in message
...
Joseph Delvey, Jr. wrote:
Greetings,


Cannot you use tin foil?


Hell no, just feel what it does to your fillings when you chew on it !

geoff


  #9   Report Post  
Geoff Wood
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

Carl Valle wrote:
"Geoff Wood" -nospam wrote in message
...
Joseph Delvey, Jr. wrote:
Greetings,


Cannot you use tin foil?


Hell no, just feel what it does to your fillings when you chew on it !

geoff


  #10   Report Post  
Geoff Wood
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

Carl Valle wrote:
"Geoff Wood" -nospam wrote in message
...
Joseph Delvey, Jr. wrote:
Greetings,


Cannot you use tin foil?


Hell no, just feel what it does to your fillings when you chew on it !

geoff




  #11   Report Post  
Richard Crowley
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

"Joseph Delvey, Jr." wrote ...

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well. Now
I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?


You may have wandered into the wrong newsgroup.
What are you shielding your speaker cables AGAINST?


  #12   Report Post  
Richard Crowley
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

"Joseph Delvey, Jr." wrote ...

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well. Now
I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?


You may have wandered into the wrong newsgroup.
What are you shielding your speaker cables AGAINST?


  #13   Report Post  
Richard Crowley
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

"Joseph Delvey, Jr." wrote ...

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well. Now
I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?


You may have wandered into the wrong newsgroup.
What are you shielding your speaker cables AGAINST?


  #14   Report Post  
Don Pearce
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

On Sun, 27 Jun 2004 12:41:40 -0400, "Joseph Delvey, Jr."
wrote:

Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well. Now
I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?

Thanks!


Do you need a shield? Here is the test. Connect your cables to the
speakers, and short together the far ends (that would normally plug
into the amplifier). Listen carefully to the speakers. Do you hear
anything? If no, you don't need the shield. If yes, move house - you
are in an area of unbelievably high EM field strength and it is
probably dangerous.

d
Pearce Consulting
http://www.pearce.uk.com
  #15   Report Post  
Don Pearce
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

On Sun, 27 Jun 2004 12:41:40 -0400, "Joseph Delvey, Jr."
wrote:

Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well. Now
I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?

Thanks!


Do you need a shield? Here is the test. Connect your cables to the
speakers, and short together the far ends (that would normally plug
into the amplifier). Listen carefully to the speakers. Do you hear
anything? If no, you don't need the shield. If yes, move house - you
are in an area of unbelievably high EM field strength and it is
probably dangerous.

d
Pearce Consulting
http://www.pearce.uk.com


  #16   Report Post  
Don Pearce
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

On Sun, 27 Jun 2004 12:41:40 -0400, "Joseph Delvey, Jr."
wrote:

Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well. Now
I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?

Thanks!


Do you need a shield? Here is the test. Connect your cables to the
speakers, and short together the far ends (that would normally plug
into the amplifier). Listen carefully to the speakers. Do you hear
anything? If no, you don't need the shield. If yes, move house - you
are in an area of unbelievably high EM field strength and it is
probably dangerous.

d
Pearce Consulting
http://www.pearce.uk.com
  #17   Report Post  
Arny Krueger
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

"Joseph Delvey, Jr." wrote in message

Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well.
Now I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?


Copper Braid, silver plated, tinned and untinned is a commodity product.

Here's an example:

http://www.alphawire.com/pages/160.cfm

If nothing else, you can pick up coax with copper braid sheld. It's not
too much work to extract just the shield. Remove the outer insulation and
the braid will bunch up and slip right off, like a Chinese finger trap.


  #18   Report Post  
Arny Krueger
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

"Joseph Delvey, Jr." wrote in message

Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well.
Now I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?


Copper Braid, silver plated, tinned and untinned is a commodity product.

Here's an example:

http://www.alphawire.com/pages/160.cfm

If nothing else, you can pick up coax with copper braid sheld. It's not
too much work to extract just the shield. Remove the outer insulation and
the braid will bunch up and slip right off, like a Chinese finger trap.


  #19   Report Post  
Arny Krueger
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

"Joseph Delvey, Jr." wrote in message

Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well.
Now I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?


Copper Braid, silver plated, tinned and untinned is a commodity product.

Here's an example:

http://www.alphawire.com/pages/160.cfm

If nothing else, you can pick up coax with copper braid sheld. It's not
too much work to extract just the shield. Remove the outer insulation and
the braid will bunch up and slip right off, like a Chinese finger trap.


  #20   Report Post  
Laurence Payne
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

On Sun, 27 Jun 2004 12:41:40 -0400, "Joseph Delvey, Jr."
wrote:

Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well. Now
I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?

Thanks!



You want news:rec.audio.fairytales :-)


  #21   Report Post  
Laurence Payne
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

On Sun, 27 Jun 2004 12:41:40 -0400, "Joseph Delvey, Jr."
wrote:

Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well. Now
I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?

Thanks!



You want news:rec.audio.fairytales :-)
  #22   Report Post  
Laurence Payne
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

On Sun, 27 Jun 2004 12:41:40 -0400, "Joseph Delvey, Jr."
wrote:

Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well. Now
I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?

Thanks!



You want news:rec.audio.fairytales :-)
  #23   Report Post  
Joseph Delvey, Jr.
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

I find it regretable to find the participants of this newgroup to be so
closed minded. Except for Arny, whose suggestion was helpful, I found
little of value to the comments I received. Have any of you listened to
Omega Micro cables? Why are you so quick to dismiss something about
which you have had no direct experience.

I had a chance to hear these cables, with and without the active shield,
in Lloyd Walker's home system, which by the way is one of the best
systems I've ever heard. I asked Lloyd to unplug the shield from its
power source which provided a DC bias to the them relative to the foil
conductors. The top octave dropped away, the dynamics lost their range,
and the soundstage narrowed considerably. I don't claim to have golden
ears, a fact I mention to underscore that the difference I heard was
obvious. I don't know exactly how an active shield like this could have
such an effect. Perhaps the explanations from Omega Micro about their
product do not make sense from an engineering standpoint. Perhaps the
shield isn't a "shield" in the traditional sense at all. But what I
heard is undeniable. I wish all of you who criticized me for asking a
question would have a chance to experience the demo I heard at Lloyd's
house.

Thanks Arny for your help.

  #24   Report Post  
Joseph Delvey, Jr.
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

I find it regretable to find the participants of this newgroup to be so
closed minded. Except for Arny, whose suggestion was helpful, I found
little of value to the comments I received. Have any of you listened to
Omega Micro cables? Why are you so quick to dismiss something about
which you have had no direct experience.

I had a chance to hear these cables, with and without the active shield,
in Lloyd Walker's home system, which by the way is one of the best
systems I've ever heard. I asked Lloyd to unplug the shield from its
power source which provided a DC bias to the them relative to the foil
conductors. The top octave dropped away, the dynamics lost their range,
and the soundstage narrowed considerably. I don't claim to have golden
ears, a fact I mention to underscore that the difference I heard was
obvious. I don't know exactly how an active shield like this could have
such an effect. Perhaps the explanations from Omega Micro about their
product do not make sense from an engineering standpoint. Perhaps the
shield isn't a "shield" in the traditional sense at all. But what I
heard is undeniable. I wish all of you who criticized me for asking a
question would have a chance to experience the demo I heard at Lloyd's
house.

Thanks Arny for your help.

  #25   Report Post  
Joseph Delvey, Jr.
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

I find it regretable to find the participants of this newgroup to be so
closed minded. Except for Arny, whose suggestion was helpful, I found
little of value to the comments I received. Have any of you listened to
Omega Micro cables? Why are you so quick to dismiss something about
which you have had no direct experience.

I had a chance to hear these cables, with and without the active shield,
in Lloyd Walker's home system, which by the way is one of the best
systems I've ever heard. I asked Lloyd to unplug the shield from its
power source which provided a DC bias to the them relative to the foil
conductors. The top octave dropped away, the dynamics lost their range,
and the soundstage narrowed considerably. I don't claim to have golden
ears, a fact I mention to underscore that the difference I heard was
obvious. I don't know exactly how an active shield like this could have
such an effect. Perhaps the explanations from Omega Micro about their
product do not make sense from an engineering standpoint. Perhaps the
shield isn't a "shield" in the traditional sense at all. But what I
heard is undeniable. I wish all of you who criticized me for asking a
question would have a chance to experience the demo I heard at Lloyd's
house.

Thanks Arny for your help.



  #26   Report Post  
Murray Peterson
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

"Joseph Delvey, Jr." wrote in
:

Why are you so quick to dismiss something about which you
have had no direct experience.


Who says we haven't?

But what I heard is undeniable.


Go on over to rec.audio.high-end -- if your experience is "undeniable",
then there are some people who will happily pay you a large sum of money
when you demonstrate this. Just post and ask about the "cable challenge".
  #27   Report Post  
Murray Peterson
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

"Joseph Delvey, Jr." wrote in
:

Why are you so quick to dismiss something about which you
have had no direct experience.


Who says we haven't?

But what I heard is undeniable.


Go on over to rec.audio.high-end -- if your experience is "undeniable",
then there are some people who will happily pay you a large sum of money
when you demonstrate this. Just post and ask about the "cable challenge".
  #28   Report Post  
Murray Peterson
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

"Joseph Delvey, Jr." wrote in
:

Why are you so quick to dismiss something about which you
have had no direct experience.


Who says we haven't?

But what I heard is undeniable.


Go on over to rec.audio.high-end -- if your experience is "undeniable",
then there are some people who will happily pay you a large sum of money
when you demonstrate this. Just post and ask about the "cable challenge".
  #29   Report Post  
Ken B
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

In article ,
says...
On Sun, 27 Jun 2004 12:41:40 -0400, "Joseph Delvey, Jr."
wrote:

Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well. Now
I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?

Thanks!


Do you need a shield? Here is the test. Connect your cables to the
speakers, and short together the far ends (that would normally plug
into the amplifier). Listen carefully to the speakers. Do you hear
anything? If no, you don't need the shield. If yes, move house - you
are in an area of unbelievably high EM field strength and it is
probably dangerous.

d
Pearce Consulting
http://www.pearce.uk.com

At the risk of sounding stupid I'll relate my experience with some
unshielded speaker cable.

I am an amateur radio operator and was operating Packet Radio on 145mhz.
I transmitted at 25watts, the transmitting antenna was above the room
containing the stereo. With the pre-amp shut off, just leaving the
100w/ch amp turned on I received a terrible max volume buzzing sound
whenever the packet station transmitted. I mean blast you out of your
chair loud, the amps analog meters were pegged high with each burst of
transmission. Yes the packet and antenna and amplifier were properly
grounded. In fact the 2 meter packet radio was a mobile unit running
off a 12 volt power supply. I switched from the flat braided multi-wire
speaker cables, these were many approx 20ga wires, to shielded speaker
wire with shields grounded at the amplifier ground, and the problem
disappeared. It seems the packet radio signal which is audio
transmitted on the 145mhz FM carrier was traveling down the speaker
cable into the amp, was then amplified and blasted the speakers (KEF
104's). So in this case the shielding worked.

Ken B.
  #30   Report Post  
Ken B
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

In article ,
says...
On Sun, 27 Jun 2004 12:41:40 -0400, "Joseph Delvey, Jr."
wrote:

Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well. Now
I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?

Thanks!


Do you need a shield? Here is the test. Connect your cables to the
speakers, and short together the far ends (that would normally plug
into the amplifier). Listen carefully to the speakers. Do you hear
anything? If no, you don't need the shield. If yes, move house - you
are in an area of unbelievably high EM field strength and it is
probably dangerous.

d
Pearce Consulting
http://www.pearce.uk.com

At the risk of sounding stupid I'll relate my experience with some
unshielded speaker cable.

I am an amateur radio operator and was operating Packet Radio on 145mhz.
I transmitted at 25watts, the transmitting antenna was above the room
containing the stereo. With the pre-amp shut off, just leaving the
100w/ch amp turned on I received a terrible max volume buzzing sound
whenever the packet station transmitted. I mean blast you out of your
chair loud, the amps analog meters were pegged high with each burst of
transmission. Yes the packet and antenna and amplifier were properly
grounded. In fact the 2 meter packet radio was a mobile unit running
off a 12 volt power supply. I switched from the flat braided multi-wire
speaker cables, these were many approx 20ga wires, to shielded speaker
wire with shields grounded at the amplifier ground, and the problem
disappeared. It seems the packet radio signal which is audio
transmitted on the 145mhz FM carrier was traveling down the speaker
cable into the amp, was then amplified and blasted the speakers (KEF
104's). So in this case the shielding worked.

Ken B.


  #31   Report Post  
Ken B
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

In article ,
says...
On Sun, 27 Jun 2004 12:41:40 -0400, "Joseph Delvey, Jr."
wrote:

Greetings,

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well. Now
I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?

Thanks!


Do you need a shield? Here is the test. Connect your cables to the
speakers, and short together the far ends (that would normally plug
into the amplifier). Listen carefully to the speakers. Do you hear
anything? If no, you don't need the shield. If yes, move house - you
are in an area of unbelievably high EM field strength and it is
probably dangerous.

d
Pearce Consulting
http://www.pearce.uk.com

At the risk of sounding stupid I'll relate my experience with some
unshielded speaker cable.

I am an amateur radio operator and was operating Packet Radio on 145mhz.
I transmitted at 25watts, the transmitting antenna was above the room
containing the stereo. With the pre-amp shut off, just leaving the
100w/ch amp turned on I received a terrible max volume buzzing sound
whenever the packet station transmitted. I mean blast you out of your
chair loud, the amps analog meters were pegged high with each burst of
transmission. Yes the packet and antenna and amplifier were properly
grounded. In fact the 2 meter packet radio was a mobile unit running
off a 12 volt power supply. I switched from the flat braided multi-wire
speaker cables, these were many approx 20ga wires, to shielded speaker
wire with shields grounded at the amplifier ground, and the problem
disappeared. It seems the packet radio signal which is audio
transmitted on the 145mhz FM carrier was traveling down the speaker
cable into the amp, was then amplified and blasted the speakers (KEF
104's). So in this case the shielding worked.

Ken B.
  #32   Report Post  
Murray Peterson
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

Ken B wrote in
t:

It seems the packet radio signal which is audio
transmitted on the 145mhz FM carrier was traveling down the speaker
cable into the amp, was then amplified and blasted the speakers (KEF
104's). So in this case the shielding worked.


I'm curious -- why didn't you just use ferrite cable chokes? My
father is a ham, and I got used to using them on darned near everything I
owned.
  #33   Report Post  
Murray Peterson
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

Ken B wrote in
t:

It seems the packet radio signal which is audio
transmitted on the 145mhz FM carrier was traveling down the speaker
cable into the amp, was then amplified and blasted the speakers (KEF
104's). So in this case the shielding worked.


I'm curious -- why didn't you just use ferrite cable chokes? My
father is a ham, and I got used to using them on darned near everything I
owned.
  #34   Report Post  
Murray Peterson
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

Ken B wrote in
t:

It seems the packet radio signal which is audio
transmitted on the 145mhz FM carrier was traveling down the speaker
cable into the amp, was then amplified and blasted the speakers (KEF
104's). So in this case the shielding worked.


I'm curious -- why didn't you just use ferrite cable chokes? My
father is a ham, and I got used to using them on darned near everything I
owned.
  #35   Report Post  
Richard Crowley
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well. Now
I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?


I am an amateur radio operator and was operating Packet Radio on 145mhz.


Shielding from near-field large RF fields, and providing a DC
bias to "improve the top octave" are so far apart on the spectrum
of applications that they don't even belong on the same planet.




  #36   Report Post  
Richard Crowley
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well. Now
I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?


I am an amateur radio operator and was operating Packet Radio on 145mhz.


Shielding from near-field large RF fields, and providing a DC
bias to "improve the top octave" are so far apart on the spectrum
of applications that they don't even belong on the same planet.


  #37   Report Post  
Richard Crowley
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

I'm trying to source a braided shield similar to that used for the
Omega-Mikro speaker cables. I've made my own cables from copper foil
that I bought from McMaster-Carr, and they work surprisingly well. Now
I'd like to add a shield, but cannot find a source for the kind of
braided mesh used on the Omega-Mikros. Any suggestions?


I am an amateur radio operator and was operating Packet Radio on 145mhz.


Shielding from near-field large RF fields, and providing a DC
bias to "improve the top octave" are so far apart on the spectrum
of applications that they don't even belong on the same planet.


  #38   Report Post  
Don Pearce
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

On Mon, 28 Jun 2004 21:12:45 -0400, "Joseph Delvey, Jr."
wrote:

I find it regretable to find the participants of this newgroup to be so
closed minded. Except for Arny, whose suggestion was helpful, I found
little of value to the comments I received. Have any of you listened to
Omega Micro cables? Why are you so quick to dismiss something about
which you have had no direct experience.

I had a chance to hear these cables, with and without the active shield,
in Lloyd Walker's home system, which by the way is one of the best
systems I've ever heard. I asked Lloyd to unplug the shield from its
power source which provided a DC bias to the them relative to the foil
conductors. The top octave dropped away, the dynamics lost their range,
and the soundstage narrowed considerably. I don't claim to have golden
ears, a fact I mention to underscore that the difference I heard was
obvious. I don't know exactly how an active shield like this could have
such an effect. Perhaps the explanations from Omega Micro about their
product do not make sense from an engineering standpoint. Perhaps the
shield isn't a "shield" in the traditional sense at all. But what I
heard is undeniable. I wish all of you who criticized me for asking a
question would have a chance to experience the demo I heard at Lloyd's
house.

Thanks Arny for your help.


It is ironic that the accusation of closed-mindedness should come from
one who clearly "knows what he heard" and won't be deflected by even
the most compelling evidence.

As somebody else has said, if you can back up your claim by actually
identifying the difference between these cables there is a huge pot of
money waiting for you to collect. Come back and post here when you
have it in your bank account; at that point we will listen to you, but
until then you are spouting nonsense.

d
Pearce Consulting
http://www.pearce.uk.com
  #39   Report Post  
Don Pearce
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

On Mon, 28 Jun 2004 21:12:45 -0400, "Joseph Delvey, Jr."
wrote:

I find it regretable to find the participants of this newgroup to be so
closed minded. Except for Arny, whose suggestion was helpful, I found
little of value to the comments I received. Have any of you listened to
Omega Micro cables? Why are you so quick to dismiss something about
which you have had no direct experience.

I had a chance to hear these cables, with and without the active shield,
in Lloyd Walker's home system, which by the way is one of the best
systems I've ever heard. I asked Lloyd to unplug the shield from its
power source which provided a DC bias to the them relative to the foil
conductors. The top octave dropped away, the dynamics lost their range,
and the soundstage narrowed considerably. I don't claim to have golden
ears, a fact I mention to underscore that the difference I heard was
obvious. I don't know exactly how an active shield like this could have
such an effect. Perhaps the explanations from Omega Micro about their
product do not make sense from an engineering standpoint. Perhaps the
shield isn't a "shield" in the traditional sense at all. But what I
heard is undeniable. I wish all of you who criticized me for asking a
question would have a chance to experience the demo I heard at Lloyd's
house.

Thanks Arny for your help.


It is ironic that the accusation of closed-mindedness should come from
one who clearly "knows what he heard" and won't be deflected by even
the most compelling evidence.

As somebody else has said, if you can back up your claim by actually
identifying the difference between these cables there is a huge pot of
money waiting for you to collect. Come back and post here when you
have it in your bank account; at that point we will listen to you, but
until then you are spouting nonsense.

d
Pearce Consulting
http://www.pearce.uk.com
  #40   Report Post  
Don Pearce
 
Posts: n/a
Default Braided shield for ribbon spkr cables?

On Mon, 28 Jun 2004 21:12:45 -0400, "Joseph Delvey, Jr."
wrote:

I find it regretable to find the participants of this newgroup to be so
closed minded. Except for Arny, whose suggestion was helpful, I found
little of value to the comments I received. Have any of you listened to
Omega Micro cables? Why are you so quick to dismiss something about
which you have had no direct experience.

I had a chance to hear these cables, with and without the active shield,
in Lloyd Walker's home system, which by the way is one of the best
systems I've ever heard. I asked Lloyd to unplug the shield from its
power source which provided a DC bias to the them relative to the foil
conductors. The top octave dropped away, the dynamics lost their range,
and the soundstage narrowed considerably. I don't claim to have golden
ears, a fact I mention to underscore that the difference I heard was
obvious. I don't know exactly how an active shield like this could have
such an effect. Perhaps the explanations from Omega Micro about their
product do not make sense from an engineering standpoint. Perhaps the
shield isn't a "shield" in the traditional sense at all. But what I
heard is undeniable. I wish all of you who criticized me for asking a
question would have a chance to experience the demo I heard at Lloyd's
house.

Thanks Arny for your help.


It is ironic that the accusation of closed-mindedness should come from
one who clearly "knows what he heard" and won't be deflected by even
the most compelling evidence.

As somebody else has said, if you can back up your claim by actually
identifying the difference between these cables there is a huge pot of
money waiting for you to collect. Come back and post here when you
have it in your bank account; at that point we will listen to you, but
until then you are spouting nonsense.

d
Pearce Consulting
http://www.pearce.uk.com
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