|
Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
|
|
|
Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
|
In Reply to: OK... I'm blown away by the simplicity of this posted by tonemaniac on March 7, 2007 at 14:15:04:
Steel has hysteresis. See the link for an explanation of this.Placing a magnet on a steel part biases the magnetization of the part away from zero. This makes the magnetization versus magnetic forcing field response more linear. This will reduce the distortion the steel part adds to an audio circuit if the steel part is anywhere near currents that are correlated with the audio signal, including power supply currents.
The magnet itself may create trouble, though. The rare-earth magnets are excellent electrical conductors, and will support circulating currents. In my experiments, ceramic magnets gave more improvement than rare-earth.
If you have a part that you know you want to keep the magnet on, attach it with polyurethane construction adhesive. This will make a constrained-layer damping system out of it, as well as a means to bias the steel's magnetization.
You may want to try placing a big square-frame transformer where you got the good magnet response. The transformer core material will concentrate any leakage magnetic fields and keep them away from areas where they may be inducing distortion.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- simple explanation - Al Sekela 13:47:48 03/08/07 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2025, Audio Asylum, all rights reserved ]
