BK 707 Tube Tester Mods - diyAudio
Go Back   Home > Forums > Design & Build > Equipment & Tools
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Equipment & Tools From test equipment to hand tools

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 24th July 2012, 09:17 PM   #1
mbeards is offline mbeards  United States
diyAudio Member
Join Date: Mar 2012
Default BK 707 Tube Tester Mods

I have a Bk 707 that works pretty well. Planning on going through the calibration process this evening after installing a SS rectifier.

I have heard of a simple mod to better test 12AX7's and while its all opened up, I am trying to think of other modifications for more comprehensive testing.

I plan on adding an ammeter to the common cathode circuit to "match tubes" or more correctly, get a better sense of performance and compare sections of twin triodes.

(I say "more correctly" since matching isn't quite possible at a static point.)

Are there any adverse affects of simply adding an analog ammeter inline with the cathodes? Also what is a good current range with this tester?

Also, this may be more trouble than its worth, but a headphone noise test would be pretty cool.

Any thoughts are greatly appreciated,

  Reply With Quote


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
WTB: Tube IMP or VTV Tube Tester or? bmenary Swap Meet 8 24th July 2011 10:39 AM
Tube Tester maxseeley Equipment & Tools 0 5th January 2011 05:08 AM
Do you have a tube tester? pforeman Equipment & Tools 2 17th December 2010 04:25 PM
Help finding a tube tester for Stereo tube amps. Fasterdamnit Tubes / Valves 8 19th July 2010 01:43 AM
tube tester TJ Equipment & Tools 11 5th April 2005 02:23 PM

New To Site? Need Help?

All times are GMT. The time now is 05:01 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2