Hum in my ESL's - diyAudio
Go Back   Home > Forums > Loudspeakers > Planars & Exotics

Planars & Exotics ESL's, planars, and alternative technologies

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 29th December 2012, 04:10 PM   #1
WrineX is offline WrineX  Netherlands
diyAudio Member
 
WrineX's Avatar
 
Join Date: Mar 2004
Location: Den Haag
Default Hum in my ESL's

hi there. im buidling my hybride speakers , a stripped magnepan smga panel for the lower region and the esl for 300hz and up. i have it running allready although i have to move the crossover frequency of the bass a little bit lower still. but i have another problem wich i want to fix first.

my ESL panels have a slight 50 hertz hum, the left and the right. the humming is also there when i unplug the speaker cables. and its gone when i remove the power from them. wich is not strange caus it is probable because of the 50 hertz mains. the High voltage unit is a classic cascade. without transformers. so 230 volt goes direct to the cascade. if had serveral of these cascades and cant remember they hummed. anyone has an idea what it could be ? like caps rotten ? or diodes ?


the cascade is one of Solosound. dutch people will know them i think
  Reply With Quote
Old 29th December 2012, 04:57 PM   #2
diyAudio Member
 
Join Date: Feb 2008
Location: Jackson,michigan
No matter how the Diode stack is fed make sure that on the powersupply out feeding the ESL, that the ground lead and the HV lead (from the top of the stack) are on the same string or bank of capacitors.
Otherwise you will get Hum.

And check for any shorted or leaky diodes as well.

jer
  Reply With Quote
Old 29th December 2012, 05:02 PM   #3
WrineX is offline WrineX  Netherlands
diyAudio Member
 
WrineX's Avatar
 
Join Date: Mar 2004
Location: Den Haag
Thanks for your help gerald , well i just soldered 1 tranformer 12-230 volt in front of the mains input (230) and use a wall tranformer (adapter) wich gives 12 volt to that transformer , so now the Highvoltage is galvanically
seperated. no hum anymore, so i have to buy another pair for the other speaker.

i thought i might as well try


makes me wonder how this system worked for 35 years with hum or with out.
  Reply With Quote
Old 29th December 2012, 05:05 PM   #4
diyAudio Member
 
Join Date: Feb 2008
Location: Jackson,michigan
Cool !!

That would have been my only other recommendation for sure.

Glad you got it working !!!

jer
  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
Toroids for ESL's CharlieM Planars & Exotics 63 20th May 2013 09:17 AM
Subwoofers and ESL's Vaughan Subwoofers 22 28th October 2012 09:28 PM
are ESL's, planars etc for me? mrkramer Planars & Exotics 30 28th July 2010 12:55 PM
ESL's and humidity? Few Planars & Exotics 10 6th August 2007 07:09 PM
What amp best for ESL's..? Adam Solid State 17 30th September 2002 03:33 AM


New To Site? Need Help?

All times are GMT. The time now is 03:45 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