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

KT81 data sheet?
KT81 data sheet?
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
Thread Tools Search this Thread
Old 20th April 2003, 04:23 PM   #11
EC8010 is offline EC8010  United Kingdom
diyAudio Moderator Emeritus
EC8010's Avatar
Join Date: Jan 2003
Location: Near London. UK

thanks for looking. I eventually found it under "obsolete" in my 1957 GEC book. and since it appears to be a KT61 on a Loctal base, and I do have the data for KT61, I am now sorted.
The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...
  Reply With Quote
Old 21st April 2003, 04:25 PM   #12
bournville is offline bournville  United Kingdom
diyAudio Member
Join Date: Feb 2003
Location: Birmingham, UK
Default A final word...

...I was just checking an old Brimar manual for another tube and came across the KT81 and, lo and behold, it is listed as an equivalent for the 7C5, a tube with completely different operating characteristics. I think this sums up what has been said about the problems of relying on equivalents listings.

Even the 'Brimarizing' section of the manual didn't make clear about playing fast and loose with equivalents. Annoyingly the manual has a very good CV equivalents listing which I've used in the past, but now will have be careful with!
  Reply With Quote


KT81 data sheet?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
DSD 1751 data sheet fmak Digital Source 0 25th June 2008 12:51 PM
looking for old data sheet unclejed613 Parts 3 13th May 2007 07:35 PM
op amp/dac data sheet help Smiffy Parts 11 13th December 2004 09:14 PM
data sheet KCC Parts 5 6th January 2004 10:03 PM

New To Site? Need Help?

All times are GMT. The time now is 11:25 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio