Copper foil speaker cables - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

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 30th August 2004, 05:45 PM   #1
Zodiac is offline Zodiac  United States
diyAudio Member
 
Join Date: Jun 2003
Location: Kenfield, CA, USA
Talking Copper foil speaker cables

My attempt at making copper foil cables for my forthcoming Linkwitz Orion speaker.

The magic ingredients:

1*Solo CFAC 0.3mH 14 AWG inductor
1*Duck Premium Grip Liner in Black
1*Roll of double sided cloth carpet tape

A picture of the ingredients:
Attached Images
File Type: jpg cimg1644.jpg (69.2 KB, 550 views)
  Reply With Quote
Old 30th August 2004, 05:51 PM   #2
Zodiac is offline Zodiac  United States
diyAudio Member
 
Join Date: Jun 2003
Location: Kenfield, CA, USA
Here is a shot of the cable showing the underside.

I used the grip liner to give the cable some strength and bulk. As a plus it looks quite cool
Attached Images
File Type: jpg cimg1647.jpg (77.6 KB, 530 views)
  Reply With Quote
Old 30th August 2004, 05:56 PM   #3
Zodiac is offline Zodiac  United States
diyAudio Member
 
Join Date: Jun 2003
Location: Kenfield, CA, USA
I mounted the cables side by side instead of on top of each other to reduce the capacitance slightly

The construction was simple:

1) Attach double sided tape to grip liner
2) Attach foil inductor to double sided tape. The CFAC inductor has a polyester film inbetween the layers of foil. I used this as a top insulator for the foil. The foil is therefore in direct contact with the adhesive on one side. I read some stuff about oxidisation problems when copper comes into contact with adhesive due to chlorine leakage. I will have to wait and see.....
3)Trim excess double sided tape and grip liner
Attached Images
File Type: jpg cimg1645.jpg (60.2 KB, 443 views)
  Reply With Quote
Old 30th August 2004, 05:58 PM   #4
Zodiac is offline Zodiac  United States
diyAudio Member
 
Join Date: Jun 2003
Location: Kenfield, CA, USA
No listening tests as yet, I am planning on making another pair to replace my Naim NACA5 in my present system which does not yet include the Orions, which are slowly being constructed
  Reply With Quote
Old 30th August 2004, 06:45 PM   #5
diyAudio Member
 
Killjoy99's Avatar
 
Join Date: Dec 2003
Location: Seattle, WA
I've been planning on making a pair of speaker cables the same way. I bought a 1mH Alpha Core Inductor but am having trouble finding the right insulator. I like the idea of using a single sided tape and just sandwiching each conductor between it, so I've been looking at 3M's product line.

They have a real nice and strong Polyurethane Tape made specifically for Abrasion, erosion, scratch, puncture, and impact resistance. It's only downfall is the very high price and the availability. Most of the line comes in around $60-$150 USD.

3Mô Polyurethane Long-Term Protective Tapes

They also have some nice Polyester Tape that could also work but much of it is thin and may not keep the wire from being stretched, bent, etc.

3Mô Polyester Film Tapes

I'm going to have pictures of my progress up pretty soon.

- Brian
  Reply With Quote
Old 30th August 2004, 07:07 PM   #6
Zodiac is offline Zodiac  United States
diyAudio Member
 
Join Date: Jun 2003
Location: Kenfield, CA, USA
According to my references, dielectric (insulator) is not very important for speaker cables, hence I just used what I found. I too was planning on using some adhesive PTFE tape that was £50 for 10m, but the cost seemed in excess of the benefits..

See below:

http://www.audioholics.com/techtips/...bsorption.html

and

http://www.tnt-audio.com/clinica/spkcbl_e.html

Note that dielectric is very important for interconnects (not speaker cable) due to the high terminating impedance. I am planning on making some interconnects from thin wall PFTE tube and foil, such that the foil only just touches the tube.
  Reply With Quote
Old 30th August 2004, 07:38 PM   #7
Kal is offline Kal  Germany
diyAudio Member
 
Join Date: Aug 2003
Location: Germany
Hello,

as far as I know, the famous flat cables made by Allan Wright (www.vacuumstate.com) are insulated with TESA-FILM - the German brand name for an adhesive tape. At least some of his cable kits are said to use such tape.

I think that the dielectric is very important with flat cables due to the large surface which is in contact with the dielectric...
But that is just my theoretical point of view, up to now no real experience.

Good luck
  Reply With Quote
Old 30th August 2004, 07:44 PM   #8
Zodiac is offline Zodiac  United States
diyAudio Member
 
Join Date: Jun 2003
Location: Kenfield, CA, USA
If you read the article above regarding dielectric absortion, you will see that is not a very important factor wrt speaker cables

My tape was cloth, which being fabric has a very low DA, I'm not sure what the effect of adhesive is, it is not a subject much discussed

Tesa is just the name of a tape manufacturer like 3M, they make all different types of tape
  Reply With Quote
Old 30th August 2004, 08:14 PM   #9
diyAudio Member
 
Killjoy99's Avatar
 
Join Date: Dec 2003
Location: Seattle, WA
One of the biggest reasons that I was researching into the 3M tapes was their strength. I want to create a cable that is tightly laminated with a strong "plastic" insulator that will keep the cable from easily being damaged from normal use. All of us could probably buy some transparent packaging tape and use that on both side of the foil but give it a month and they would look like a wrinkled piece of newspaper.

The stronger tapes should keep the foil from bending for the most part and stop it from creasing.

I would comment about the dielectric properties but i've got a lack of knowledge to that respect.

I guess either way some of those rolls of tape are way to expensive for most of us, including myself.
  Reply With Quote
Old 30th August 2004, 08:36 PM   #10
diyAudio Member
 
Join Date: Feb 2004
Location: Citrus Heights,California republic.
Hello;
I constructed three sets of silver foil speaker cables approx. 2 years ago the first set was for myself the other two sets for friends.

I used double sided carpet tape with both + and- leads on oposite sides covered with crystal clear packing tape .
Silver foil is .003 x 1in.
These cables are amazing ( although they do need about 500 hours break in) they beat the crap out of every other cables that I have heard....
I have seen zero signs of oxidation.
Regards.
Craig.
  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
Follow up on copper foil speaker cables Peter Daniel Multi-Way 80 7th March 2011 04:58 PM
Finished my DIY Copper foil speaker cable, what connector to use? Guijs Everything Else 4 19th October 2005 11:31 PM
Copper Foil Speaker Cable - advice? Rotellian Multi-Way 9 9th September 2003 06:09 PM
Copper foil inductors. JoeBob Multi-Way 5 22nd April 2002 07:39 PM


New To Site? Need Help?

All times are GMT. The time now is 08:08 AM.


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