pre/amplifier grounding - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs 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

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 February 2005, 10:42 PM   #1
Alkis is offline Alkis  Greece
diyAudio Member
Alkis's Avatar
Join Date: Oct 2004
Location: Thessaloniki
Default pre/amplifier grounding

Hi all,
I 'd like to have your opinion about grounding methods.I always used not to connect earth with chassis but on Sakuma's page yoy can see the two point earth method.
Ok,this seems to reduce HUM problems.But isn't it possible to pick up some noise from other sources?
What about the grounding star,that is used by the recording studios?
And what if a capacitor breaks down(PSU for exable) and the chassis bekome hot?In some cases we have a totally destroyed cap,in some others a resistance appears between the electrodes and for electrolytics that are polarised near the nominal engraved voltage, some may ask not "if', but "when".
Thanks in advance for your kindly assistance and don't bothere about my English.
  Reply With Quote
Old 18th February 2005, 01:16 AM   #2
benny is offline benny  Australia
diyAudio Member
benny's Avatar
Join Date: May 2004
Location: Melbourne, Australia
Send a message via MSN to benny
Grounding your chassis may have created earth loop problems if your input jacks aren't electrically isolated from the chassis.

Star grounding is a good method when done properly.

Your fear of the chassis become live in the event of a filter cap faliure is nothing to worry about, as this won't happen. If the chassis is grounded, it is at earth potential... you can even stick a live wire directly onto the chassis while touching it (the chassis) and you will be safe as all you're doing is shorting the potential to ground. The worst that will happen if the chassis comes into contact with a live wire is you will blow a fuse (should you have a fuse in place, if not, then more damage may take place, but you will be safe).
  Reply With Quote
Old 27th February 2005, 02:29 AM   #3
Alkis is offline Alkis  Greece
diyAudio Member
Alkis's Avatar
Join Date: Oct 2004
Location: Thessaloniki
Ok Benny,
thanks for replying.I guess,I'll ground the amplifiers this way
  Reply With Quote
Old 27th February 2005, 03:57 AM   #4
Bill*B is offline Bill*B  United States
diyAudio Member
Join Date: Sep 2004
Location: tampa, florida, USA

An article which helped me is posted online at Aiken Amplification under "Tech Info". Follow the links to "Advanced" and on to "Star Grounding".

Regards, Bill.
  Reply With Quote
Old 27th February 2005, 07:56 PM   #5
Alkis is offline Alkis  Greece
diyAudio Member
Alkis's Avatar
Join Date: Oct 2004
Location: Thessaloniki
Thanks Bill,
I'll study the hole article tonight
  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
some help on dac grounding, please federico moreno Digital Line Level 0 3rd April 2009 05:05 PM
Lions and Tigers and Grounding Problems, Oh My! DoZ Grounding... EchoWars Solid State 37 3rd August 2008 08:50 AM
Grounding problem of my OTL headphone amplifier ronardi Headphone Systems 1 17th May 2006 04:19 PM
LM3875 kit grounding, optimal grounding for separate amps and psu? findog Chip Amps 9 16th May 2005 09:27 PM
Grounding your amplifier? thylantyr Solid State 3 30th April 2003 07:04 AM

New To Site? Need Help?

All times are GMT. The time now is 02:29 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