Some aspects of crossover design to correct for the time offset due to acoustic center displacement in coaxial transducers are examined. The effect of this time delay on the magnitude response of first-, second-, and third-order crossover networks is isolated from the entire crossover-transducer system. This is accomplished by examining the steady-state vector sum of outputs of a transfer function model of the low-pass filter, the high-pass filter, and the time-delay portions of the entire system. Second, Bessel low-pass and all-pass networks are analyzed as approximations to the spatially related time delay. The magnitude and group-delay characteristics of second- and fourth-order networks of these types are examined. Finally, the magnitude of response of crossover networks employing time-delay approximation networks is considered. The model used to evaluate the effect of time offset on crossover networks is modified to include the compensation effects of the Bessel low-pass and all-pass networks.
Author:
Fink, Dennis G.
Affiliation:
United Recording Electronics Industries, Sun Valley, CA
JAES Volume 28 Issue 9 pp. 601-611; September 1980
Publication Date:
September 1, 1980
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.