Journal Forum

Audibility of a CD-Standard A/DA/A Loop Inserted into High-Resolution Audio Playback - September 2007
13 comments

Sound Board: Food for Thought, Aesthetics in Orchestra Recording - April 2015
2 comments

Reflecting on Reflections - June 2014
4 comments

Access Journal Forum

AES Journal Forum

Scanning the Magnetic Field of Electrodynamic Transducers

An accurate means for measuring the magnetic flux density of moving coil loudspeakers is critically important. The paper presents a new measurement technique by scanning flux density on a cylindrical surface within and outside the magnetic gap using a Hall sensor combined with robotics to move the sensor. Scanning the magnet field on the circumference of the gap seems to be the only way for detecting axial asymmetries and other magnetic field irregularities caused by material inhomogeneity and manufacturing failures, such as partial magnetization and incorrect adjustment of the parts. Variation of magnetic field in the gap reveals an asymmetrical driving force that causes rocking modes and voice coil rubbing.

Author:
Affiliation:
JAES Volume 60 Issue 6 pp. 452-458; June 2012
Publication Date:

Click to purchase paper or you can login as an AES member to see more options.

No AES members have commented on this report yet.

Subscribe to this discussion

RSS Feed To be notified of new comments on this report you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this report and are an AES member then you can login here:
Username:
Password:

If you are not yet an AES member and have something important to say about this report then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.

 
Facebook   Twitter   LinkedIn   Google+   YouTube   RSS News Feeds  
AES - Audio Engineering Society