Go Back   Home > Forums > Amplifiers > Tubes / Valves
Home Forums Rules Articles Store Gallery 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

diyAudio Sponsor

Search for a tube at thetubestore.com                            Product reviews and more

Audio tubes for any amplifier: from high end home audio to classic guitar amps.

Quick links by tube type: 12AX7, EL34, 6L6, KT66, 6550, KT88, EL84, 12AU7, 12AT7, 6922, 6H30, 300B, 6V6, 6SN7 

Reply
 
Thread Tools Search this Thread
Old 20th July 2006, 12:41 AM   #1
diyAudio Member
 
Join Date: Mar 2006
Location: Michigan
Default A suspect EL34

Hey, I have a question for someone who has more knowladge in tubes than myself. I have an EL34 amplifier, that is Single-ended, and one of the tubes is suspect. the heater looks a little dimmer than the other when the tubes are on, and when I shake it (gently) I hear something moving around

The tube behaves normally when in use, it is just as loud as the other channel, and heats up in the same amount of time, and runs no hotter than the other channel, The amp is running in Triode-strapped mode, and if i bump it up to pentode, is it possible that this problem will cause the tube to arc and serve up "hot electric death" even if the tube is running normally in Triode mode? any help would be wonderful

-Alex
  Reply With Quote
Old 20th July 2006, 01:01 AM   #2
diyAudio Member
 
Join Date: Apr 2005
Location: ffx station, va
I just shook a brand new in the box Svetlana EL34. I hear something faintly moving around. I would say stop shaking your tubes, stop staring at the filaments, and stop worrying. Chances are much higher of *you* serving up hot electric death with your pentode upgrade than the tube itself.

Let us know how it goes!
__________________
-e
  Reply With Quote
Old 20th July 2006, 03:33 AM   #3
diyAudio Member
 
Join Date: Mar 2006
Location: Michigan
I was already to make the change to pentode mode, but then my (instert cloud of expletives here) soldering Iron died, its the last time I but anything from Radio Shack... I'll get a new one later this week, but untill then it'll have to wait...
  Reply With Quote

Reply


Hide this!Advertise here!

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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
El34 PP Vs. El34 PSE alexmoose Tubes / Valves 47 6th September 2006 06:44 PM
crossover design... suspect data?? wintermute Multi-Way 18 10th September 2005 03:36 AM
6L6 vs EL34 resident Tubes / Valves 20 13th October 2004 07:37 AM
6L6'S vs EL34's tuneman Tubes / Valves 8 30th July 2004 11:32 PM


New To Site? Need Help?

All times are GMT. The time now is 12:03 AM.

Page generated in 0.07291 seconds (69.24% PHP - 30.76% MySQL) with 10 queries

Copyright ©1999-2012 diyAudio