Direct-radiator loudspeakers become more efficient as the total magnetic flux is increased, but the accompanying equalization and amplifier modify the gains thus made. We study the combination of an efficient high-Bl driver with several amplifier types, including a highly efficient class-D amplifier. Comparison is made of a typical simulated driver, excited with a few different amplifier types, using various audio signals. The comparison is quite striking as the Bl value of the driver increases, significantly favouring the class-D amplifier.

Authors: Vanderkooy, John; Boers, Paul M.
Affiliations: Audio Research Group, Dept. of Physics, University of Waterloo, Waterloo, ON Canada ; Philips Research Labs, Eindhoven, The Netherlands(See document for exact affiliation information.)
AES Convention: 113 (October 2002) Paper Number: 5651
Publication Date: October 1, 2002
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.

Subscribe to this discussion

To be notified of new comments on this paper 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 paper 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 paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.