6L6 PP problem - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

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
Reply
 
Thread Tools Search this Thread
Old 2nd November 2009, 12:13 AM   #1
diyAudio Member
 
Join Date: Oct 2007
Default 6L6 PP problem

I have some noise issues with a 4 6L6 power amp, similar to blocking distortion, but this noise appears at half power (about 50 or 60W), even without signal. Tubes aren't matched, and 3 of them are quite old, one is new. Could be a tube mismatching problem?
  Reply With Quote
Old 2nd November 2009, 10:13 AM   #2
diyAudio Member
 
tubesteve's Avatar
 
Join Date: May 2009
Location: since 1998 in China as an electronic consulting design and testing engineer
Send a message via Skype™ to tubesteve
can you describe the noise a bit more precisely? with or without signal?
  Reply With Quote
Old 2nd November 2009, 10:45 AM   #3
diyAudio Member
 
richwalters's Avatar
 
Join Date: Sep 2003
Location: Alps:Tube amp designs over 150W, SMPS guru.
More info S.V.P. Since history is unknown, changing all the tubes may be a good idea.
  Reply With Quote

Reply


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
Please help for B+ problem! SKLau Tubes / Valves 7 25th July 2008 03:56 AM
Dac problem ,I need help huaming Digital Source 1 19th February 2007 03:17 PM
Another Amp Problem swordfish689 Car Audio 4 23rd January 2005 08:24 PM
P3a problem Morph Solid State 9 27th February 2003 08:57 PM


New To Site? Need Help?

All times are GMT. The time now is 08:24 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2