|
SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
|
|
|
SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
|
In Reply to: 805 bias posted by thermionic emitter on October 16, 2006 at 08:16:53:
Tom,The increase of the dull red intensity is an optical illusion. Because the 805s filament gives much more light than the dull red anode, your eyes can't see the dull red. After switching off the amp your eyes take a few seconds to adjust to the lower light level, in fact they become more sensitive (pupil dilation). That’s why the dull red appears to increase in intensity but in fact it's decreasing. To view the dull red anode when the amp is operating you'll have to use a light to screen out the filament light.
The light screen can be made from a peace of black paper with a hole in it, which is about half the size of the anode. Hold the screen about half way between your eyes and the tube so you can't see the filament light anymore. Now you should be able to see the dull red anode.CMGlow
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Re: 805 bias - CMGlow 22:54:31 10/16/06 (2)
- Re: 805 bias - thermionic emitter 10:12:22 10/17/06 (1)
- Re: 805 bias - CMGlow 23:00:33 10/17/06 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]
