AES Store

Journal Forum

Reflecting on Reflections - June 2014
1 comment

Quiet Thoughts on a Deafening Problem - May 2014
1 comment

Perceptual Effects of Dynamic Range Compression in Popular Music Recordings - January 2014
5 comments

Access Journal Forum

AES E-Library

Frequency Response Considerations for an Electrostatic Horn Tweeter Using Electret Elements

Practical design methods for electrostatic loudspeakers using dc bias are well known. The frequency characteristics and the efficiency of a horn-loaded electret tweeter are presented. This tweeter has a very thin diaphragm (palladium vacuum evaporated on 4 µm thick polyester) between two perforated back plates on which perforated electret films (125 µm thick) are laminated. The tweeter's frequency response depends mainly upon the ratio fo the total cross-sectional area of the holes in the perforated electret to the area of the diaphragm (perforation ratio), and also upon the ratio of the throat area of the horn to the area of the diaphragm (transformation ratio of the horn). The thickness of the electret film that maximizes the driving force can be given by E*g, where E* is the dielectic constant of the electret and g is the the length of the air gap. Regarding this characteristic of dependence, the results of analysis and experiments are given to clarify the various characteristics of a horn-loaded electret tweeter.

Authors:
Affiliation:
JAES Volume 24 Issue 5 pp. 368-373; June 1976
Publication Date:

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!


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