A new high-frequency horn

Abstract

A new horn was designed with reduced taper rate and mouth size as compared to an existing horn. Low-frequency response was improved by adding a flange or baffle. Comparison with the existing unflanged horn of similar length shows ability to radiate a wavelength 20 per cent longer. The reduced exit angle provided an unexpected gain in high-frequency range and smoothness of response. With a new wide-range driver, the horn produces smooth response at frequencies more than an octave higher than the old horn and driver. Thus, the bulkier horn with 500-5000 cps response and a tweeter may be replaced with a single horn having 260-17,000 cps response.