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 7th October 2008, 05:01 AM   #11
diyAudio Member
 
Join Date: Sep 2008
The tech I took mine to said that the failure was probably due to the old output tubes just being installed without the proper testing and adjustments being done. I can believe that after reading about how cathode-biased amps aren't as "plug and play" as some people (myself included) mistakenly think.

I played the amp for a few hours today and yesterday at medium volumes and it seems to be behaving normally for the time being. I also forgot to mention that the power switch (which was an old russenberger rocker switch) was on its way out and had to be replaced. You could sortof tell...it didn't have that rigid feel anymore.

Overall, both the clean and dirty channels seem to have more bite now. I guess that's probably due to the new tubes. Sounds good to me.

mod evil, do you think that the issues you're encountering with your vc are likely what caused my mishap? My tech didn't say anything about any inherent problems in the output stage design. On the other hand, he couldn't believe how poor the amp's ventilation is. I want to wire a quiet computer fan into the back of it, but I'm not quite there yet. The thing reminds me of an Easybake oven because of the way the board is mounted vertically with the tubes protruding horizontally inward. The passive ventilation scheme does not get the job done I think from now on I'm at least going to run a fan behind it to blow cool air into the amp.
  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
crate vintage "club 50" schematics needed cbriere Tubes / Valves 2 14th November 2007 06:39 PM
Crate Amp Problem Distortion Vs. Clean foxenergy Instruments and Amps 3 24th February 2007 05:53 PM
hk 670 problem(the vintage one, not the 2001 model) DragonMaster Solid State 7 8th April 2006 01:19 PM
Vintage Isophon Problem Duo Multi-Way 8 6th November 2005 12:35 AM


New To Site? Need Help?

All times are GMT. The time now is 10:37 AM.


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