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

Solid State Talk all about solid state amplification.

usher R1.5 noise
usher R1.5 noise
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 28th December 2009, 07:39 PM   #1
david foster is offline david foster  United States
diyAudio Member
 
Join Date: Dec 2009
Default usher R1.5 noise

When I turn on my Usher amp I get a humming noise which seems to have increased in volume. When I first purchased the amp the hum was not very noticeable (its more of a ringing sound) I don't think it is a grounding problem. There seems to be no problem with how it functions sound is great etc. but the noise is noticeable when there is a lull in the music, does anybody have any idea what could be causing this?
Thanks David
  Reply With Quote
Old 29th December 2009, 12:10 AM   #2
nigelwright7557 is offline nigelwright7557  United Kingdom
diyAudio Member
 
nigelwright7557's Avatar
 
Join Date: Apr 2008
Location: Carlisle, England
If its hum then it will be 50Hz getting in somewhere.

Have a look at the power rails for excessive ripple.

Other than that try it with input shorted and see if it is the amp or something connected to it.

I find I have to connect or disconect the earth to the zero volt line depending on what I am driving the amp from. For an MP3 player i need the earth connected. For a mains powered pre amp taht is already earthed i have to disconnect the earth from the amp.
__________________
Murton-Pike Systems PCBCAD51 pcb design software. http://www.murtonpikesystems.co.uk
  Reply With Quote
Old 29th December 2009, 06:25 PM   #3
david foster is offline david foster  United States
diyAudio Member
 
Join Date: Dec 2009
Ok, I will try what you have suggested. Thanks for your help
  Reply With Quote

Reply


usher R1.5 noiseHide 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
Tda1541 R1?? HeadSh0T Digital Line Level 21 12th January 2010 01:25 PM
Raven R1 joeling39 Planars & Exotics 2 27th July 2009 04:04 AM
WTB 3 qty Usher T-9950 & Usher Qty 1 - 8845 markmelheim Swap Meet 1 17th May 2006 10:15 PM
For sell TDA1541A-R1 bezobraznia Swap Meet 6 17th January 2006 11:29 AM


New To Site? Need Help?

All times are GMT. The time now is 11:59 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki