HF Noise and cracking noise from Gainclone - Help - Page 2 - diyAudio
Go Back   Home > Forums > Commercial Sector > Vendor Forums > Audio Sector
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Audio Sector Kits & PC boards from AudioSector

Thread Tools Search this Thread
Old 8th January 2012, 02:21 PM   #11
GloBug is offline GloBug  Canada
Join Date: Jun 2011
Do you have a picture of your grounding?

Page 30 of the instruction PDF shows how to ground it. http://www.audiosector.com/nigc_kit-users_guide.pdf

I have mine on a bread-board and it works flawless from that stand point. (It does pop if I turn on a florescent light. Does not bother me, easy fix if it does)

Notice I even have long leads without problems. (They will be shorter in when installed into chassis.)

I did not ground mine like the instructions, I just did it the original easy way (running individual ground to rectifier board) and it still works silently.

I will try it like the instructions in the final build.

I am also using a single transformer. It was a center-tapped version changed into dual secondaries by splitting the center tap. My transformer is only temporary, until the bigger unit arrives.

Your crackling sound seems like a bad connection somewhere. Remove those screw down terminals, re-flow your solder, check the chip for solder bridge or metal debris.

I see one channel implying a dual-mono setup, what does the other channel sound like?
Attached Images
File Type: jpg DSC06684.JPG (317.8 KB, 267 views)

Last edited by GloBug; 8th January 2012 at 02:29 PM.
  Reply With Quote
Old 8th January 2012, 02:46 PM   #12
GloBug is offline GloBug  Canada
Join Date: Jun 2011
You know I was just reading your other post's.

It seems you were concerned about this problem before you even ordered your power transformer.

It's almost like you predicted this was going to happen.

Maybe it's just me, somethings fishy here.
  Reply With Quote
Old 8th January 2012, 03:14 PM   #13
syklab is offline syklab  Mongolia
diyAudio Member
Join Date: Jul 2009
Location: This world
Click the image to open in full size.
I didnot ground it to the case (no case at the moment). It is dead slient if connect one channel, hum experienced when I connected both channel to the same transformer. I like to know how to ground with two rectifier modules to only one transformer, there must be a way.
  Reply With Quote
Old 8th January 2012, 03:39 PM   #14
GloBug is offline GloBug  Canada
Join Date: Jun 2011
Hmm, you could try changing one of the leads from the transformer around. Try moving the transformer farther away.

Also I see your running both rectifiers off of one transformer.
You might consider just using one rectifier board, after all you only have one transformer.
That might solve your problem. You might not have any benefit vs. troubles by using to rectifier boards with the one transformer.
  Reply With Quote
Old 9th January 2012, 06:14 PM   #15
diyAudio Member
Peter Daniel's Avatar
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
I would also suggest that the hum comes form dual rectifier boards connected to a single transformer. Use one board instead of two.
“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC
  Reply With Quote
Old 17th March 2016, 12:58 PM   #16
diyAudio Member
Doug Kim's Avatar
Join Date: Apr 2008
Location: Maryland, USA
Originally Posted by Peter Daniel View Post
I would also suggest that the hum comes form dual rectifier boards connected to a single transformer. Use one board instead of two.
I was going to do this for my 4780 parallel amp and just saw this comment.
What is going to be the reason for hum coming from dual rectifier boards?
  Reply With Quote
Old 9th December 2016, 07:29 PM   #17
diyAudio Member
Join Date: Nov 2016
Originally Posted by corlickmark View Post
to stop this frequency interference you need to add a high pass or band pass filter. otherwise, the problem will continue. from my point of view you should attach a EMI filter with your power supply. if you tell me the details i can help you to calculate the required rating of the filter.
what kid of details do you need exactly?
  Reply With Quote


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
Cracking noise at clipping ionutgaga Class D 24 27th July 2008 10:38 PM
cracking noise in reference Tony.ca Multi-Way 12 18th October 2006 07:20 PM
hf noise rgrayton Chip Amps 1 29th November 2005 03:09 PM
HF noise problem jarkaa Chip Amps 1 6th February 2005 04:47 PM
cracking noise in P3a PetarLD Solid State 0 13th May 2004 04:03 AM

New To Site? Need Help?

All times are GMT. The time now is 03:10 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2