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

833 and GU-48
833 and GU-48
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 31st March 2005, 12:58 PM   #1
Eugeny is offline Eugeny  Ukraine
diyAudio Member
 
Join Date: Mar 2005
Location: Donetsk
Send a message via ICQ to Eugeny
Default 833 and GU-48

Hello..
I test at Vp= 980 V , Ip= 120 mA and Grid connect to Gnd.
Plate no shows an orange-red colour
Attached Images
File Type: jpg gu48c.jpg (14.8 KB, 340 views)
  Reply With Quote
Old 1st April 2005, 05:35 AM   #2
ReinoutdV is offline ReinoutdV  Netherlands
diyAudio Member
 
Join Date: Feb 2004
Location: Elst
Default my GU48 does....

Hi Eugeny,

funny....at those voltage (some more current) my GU48 does show some reddish colour.

I noticed your wire-size of the filaments: maybe i'm mistaken but those look incredible small. It's 10V/10A were talking here.
If your wire gets warm....you know you are firing up your GU48 not at the intended 10V/10A....but less.....

In what kind of amp you're going to use this triode ?

The GU48 is a real bass-monster, but not as detailed in the heighs as American or Chinese 833's. But for the price....who complains ?

Lots of building pleasure,

Reinout
Attached Images
File Type: jpg img_2890.jpg (63.7 KB, 317 views)
  Reply With Quote

Reply


833 and GU-48Hide 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


New To Site? Need Help?

All times are GMT. The time now is 11:47 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki