Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

Power and Speaker cables
Power and Speaker cables
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
Thread Tools Search this Thread
Old 3rd January 2012, 05:53 PM   #11
TerryO is offline TerryO  United States
diyAudio Member
TerryO's Avatar
Join Date: Nov 2002
Location: Seattle,Wash.
Originally Posted by Evenharmonics View Post
You want to stay away from forums like that. There's a high chance that you will be misguided and end up wasting your money.
I have to agree. There's a lot of misinformation out there and until you get a handle on what's real, what isn't and what's iffy, I wouldn't invest too much (mentally or monetarily) into some of the more "controversial" areas of Tweakdom.

FWIW, all copper wire in the US (at least if it "is" American Manufactured Copper) comes in two standard (OFC) grades of "purity", 99.95 and 99.98 percent pure. The remaining impurities are, for the most part, trace amounts of sulphur. Chinese made copper wire, OTOH, is usually in the 80's for purity, so there can be a difference.

Best Regards,
"If you have to ask why, then you're probably on the right track."
quote from Terry Olson's DIYaudio Forum application
  Reply With Quote
Old 3rd January 2012, 05:55 PM   #12
TheGimp is offline TheGimp  United States
diyAudio Member
TheGimp's Avatar
Join Date: Aug 2009
Location: Johnson City, TN
If you have moderately long runs of speaker cable, and an amp which is sensitive to capacitive loading, then the capacitance of the cable may become a factor and it would be possible to hear the difference in cable in such an instance.

However, I submit that correcting the sensitivity of the amp to capacitive loading would be a better use of one's effort.
  Reply With Quote
Old 3rd January 2012, 06:27 PM   #13
DF96 is offline DF96  England
diyAudio Member
Join Date: May 2007
Originally Posted by Zeta4
not expensive enough
Yes, sellers want profit. Buyers may want bragging rights, and price stimulates the placebo effect.
  Reply With Quote
Old 3rd January 2012, 07:12 PM   #14
benb is online now benb  United States
diyAudio Member
Join Date: Apr 2010
Originally Posted by brucetassin View Post
I want to understand as much as possible.
I just edited this wiki entry to include and describe the ARRL Handbook:
Electronics:Recommended Reading - diyAudio

I have the 2011 edition. Page 22.39 has a table giving the resistance of copper wire of any given AWG, good for calculating the resistance of any cable. Resistance is usually the main thing you want to know. From that you can calculate the voltage drop into a nominal speaker impedance and the dB loss from the cable. As others suggested, inductance and capacitance could also be important depending on the cable length and how well the amplifier can drive a high capacitance. For power cables, you can calculate how much voltage drop there is in a cable between the power outlet and the internal connection in the amplifier. This is from cable length and AWG (which addmitedly might be hard to find out from the "data sheets" of these high-dollar cables).

Knowledge is power (personal, not electrical). With a little studying, you'll know more about cables than all the salesmen and most of the "designers" of these things.
  Reply With Quote
Old 3rd January 2012, 10:25 PM   #15
brucetassin is offline brucetassin  United States
diyAudio Member
Join Date: Dec 2005
Location: Loganville, GA
OK, everyone is involved....good.
There is talk of cable length, resistance, purity of the coper, capacitance and so on.

I'm still stuck on a 1 meter power cable, you know, the one that takes the 120vac to the power transformer of the amp? OVER $1,000.00 in some cases!
What about from the back of the wall recp, all the way back to the power generating station?
  Reply With Quote
Old 3rd January 2012, 10:31 PM   #16
TonyTecson is offline TonyTecson  Philippines
diyAudio Moderator
TonyTecson's Avatar
Join Date: May 2003
Location: Palatiw, Pasig City
Power and Speaker cables
^what effect could a 1 meter power cable on a power transformer that can have 300meters of magnet wire? go figure......
planet10 needs your help: Let's help Ruth and Dave...http://www.diyaudio.com/forums/plane...ml#post5010547[B
  Reply With Quote
Old 3rd January 2012, 11:19 PM   #17
Wavebourn is offline Wavebourn  United States
Designer & Technologist
diyAudio Member
Wavebourn's Avatar
Join Date: Sep 2006
Location: Pleasant Hill, CA
Power and Speaker cables
Originally Posted by Tony View Post
^what effect could a 1 meter power cable on a power transformer that can have 300meters of magnet wire? go figure......
Some people add to tube amps power sockets with filters intended to be installed in devices with SMPS that generate high frequency garbage. As the result, they catch up on their ground garbage from outlets. Lousy cables with higher resistance and inductance add losses attenuating currents that in case of strong cables would cause garbage drops on ground loops.

Here is typical example of such filter:

Click the image to open in full size.
Nothing in the universe is perfect. The ideal things are the ones that are most optimal. Optimization criteria, what matters. When I hear "No Compromise Design", I want to take a sledgehammer and test how impact-proof it is.
  Reply With Quote


Power and Speaker cablesHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
DIY Cable for Interconnects, speaker, and power cables jason300b Swap Meet 5 13th May 2011 02:56 AM
Old power cables make good audio cables? paean Parts 9 2nd November 2010 08:21 AM
Your Speaker Cables... jleaman Multi-Way 41 17th May 2006 02:29 AM
cables for diy amps, preamps, and speaker cables ... paulspencer Solid State 5 3rd August 2004 07:14 AM

New To Site? Need Help?

All times are GMT. The time now is 06:05 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio