Most of compression drivers have phasing plugs with annular slots. Existing theories give recommendations for positioning of annular slots to suppress air resonances in compression chamber. However, interaction of diaphragm’s mechanical resonances with the compression chamber’s air resonances makes the problem very complex and a general theoretical solution hardly exists. New approach, based on certain empirical assumptions, is proposed and explained. New phasing plugs have slots of a “meandering” shape that provide effective “averaging” of high-frequency acoustical signal received from different parts of compression chamber. The method is applicable to drivers having domes, cones, and annular diaphragms. Other aspects of the design such as efficiency, compression ratio, and difference between air resonances in dome and annular compression chambers are discussed.
Author:
Voishvillo, Alexander
Affiliation:
JBL/Harman Professional Solutions, Northridge, CA, USA
AES Convention:
141 (September 2016)
Paper Number:
9618
Publication Date:
September 20, 2016
Subject:
Transducers
Click to purchase paper as a non-member or you can login as an AES member to see more options.
No AES members have commented on this paper yet.
To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.