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.

DC offset
DC offset
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 9th June 2012, 02:39 PM   #1
emmi is offline emmi  India
diyAudio Member
Join Date: Aug 2010
Default DC offset

If DC offset is 50mV what would be the possible damage to speaker as well as amplifier
  Reply With Quote
Old 9th June 2012, 02:42 PM   #2
Tekko is offline Tekko
Join Date: Jan 2005
Up to 50mV is considered ok, beyond that its harmful to the speakers.
  Reply With Quote
Old 9th June 2012, 02:49 PM   #3
richie00boy is offline richie00boy  United Kingdom
Did it Himself
diyAudio Member
richie00boy's Avatar
Join Date: Nov 2003
Location: Gloucestershire, England, UK
DC offset
It depends what speaker it is driving. For anything other than a tweeter 100mV would do no harm. A big sub would even tolerate 200mV.

The "damage" could be a slight shift away from the normal resting place and tiny reduction in excursion one way.
www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, modules and more.
  Reply With Quote
Old 9th June 2012, 04:08 PM   #4
Tekko is offline Tekko
Join Date: Jan 2005
But usually, an excess of 35mV denotes either a bad design or a faulty amp in need of adjustment.

DC offset abive 35mV can also increase THD and other distortions but its at so low levels that the natural distortion of the speakers themselves would drown it out and make it inaudible, unless the cone visibly moves out of center.
  Reply With Quote


DC offsetHide 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
What is DC offset? spooney Car Audio 16 9th September 2013 12:32 AM
DH-220 Clone (SMART TA-242) can't adjust DC offset using offset bias pot? beady Solid State 6 17th March 2011 10:53 AM
DC Offset JannaCassandra Chip Amps 3 26th July 2008 03:20 PM
Help With DC Offset Sybex23 Chip Amps 8 15th November 2004 07:11 PM
DC offset need help again :-( djdamix Solid State 13 26th October 2004 08:38 AM

New To Site? Need Help?

All times are GMT. The time now is 04:22 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