Common crossover networks generally consist of several filter elements independently feeding various drivers. Subtractive crossovers differ by using interdependent filter stages, for example, subtracting the voltage to the tweeter from the original input voltage to yield a complementary voltage to drive the woofer. The summer output from such a subtractive crossover automatically equals the input. Advantages, limitations, and possibilities of this topology are investigated.

Author: Guarin, Eric
Affiliation: University of Illinois, Urbana, IL
AES Convention: 81 (November 1986) Paper Number: 2386
Publication Date: November 1, 1986
Subject: Audio Reproduction, Transducers, and Sound Reinforcement: Loudspeaker Arrays and Crossovers

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