Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki 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

Help! Phono stage LF instability
Help! Phono stage LF instability
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 25th August 2007, 07:50 PM   #1
Jeb-D. is offline Jeb-D.  United States
diyAudio Member
 
Jeb-D.'s Avatar
 
Join Date: Nov 2005
Location: SoCal
Default Help! Phono stage LF instability

This topic has come up before, but I can't find the thread. My newly built phono stage has some kind of low frequency(subsonic) instability/oscillation. It occurs with or without a load.

What are common causes for this?

I can post a schematic later if that will help
  Reply With Quote
Old 25th August 2007, 08:42 PM   #2
Jeb-D. is offline Jeb-D.  United States
diyAudio Member
 
Jeb-D.'s Avatar
 
Join Date: Nov 2005
Location: SoCal
Nevermind, found the issue. My soldering iron was plugged into the same power strip and it was causing sagging in the mains. It's a temp cycle controlled type.
  Reply With Quote
Old 25th August 2007, 09:39 PM   #3
pedroskova is offline pedroskova
RIP
 
pedroskova's Avatar
 
Join Date: Dec 2002
Location: C'ville VA, USA
Great catch. That could have turned frustrating.
  Reply With Quote

Reply


Help! Phono stage LF instabilityHide 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
DIY phono to replace roksan phono stage seroxatmad Analog Line Level 6 14th December 2008 05:46 PM
new phono stage or old preamp with phono? flohmann Analog Line Level 2 2nd October 2008 09:51 PM
PS for phono stage trianglezerius Power Supplies 0 20th March 2007 12:14 AM
Output stage instability Katapum Solid State 35 27th December 2005 04:31 PM
Should I replace Scott 222C phono stage with Claret phono stage? Bing Yang Analogue Source 0 22nd August 2005 06:41 AM


New To Site? Need Help?

All times are GMT. The time now is 09:35 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki