Elements of acoustical engineering (1940) Elements of acoustical engineering elementsofacoust00olso Year: 1940 HORN LOUD SPEAKER SYSTEMS 169 to z^i and 2^2 and, therefore, shunts out the low frequency horn and radiation issues from the high frequency horn. In the mid range, radia- tion issues from both horns. The response frequency characteristic. Fig. , shows the response range of the two horns. The throats of the two horns may be chosen so that the efficiency characteristic of this loud speaker will be the same as that of the two channel system discussed in the preceding section. Howeve
Elements of acoustical engineering (1940) Elements of acoustical engineering elementsofacoust00olso Year: 1940 HORN LOUD SPEAKER SYSTEMS 169 to z^i and 2^2 and, therefore, shunts out the low frequency horn and radiation issues from the high frequency horn. In the mid range, radia- tion issues from both horns. The response frequency characteristic. Fig. , shows the response range of the two horns. The throats of the two horns may be chosen so that the efficiency characteristic of this loud speaker will be the same as that of the two channel system discussed in the preceding section. However, the power handling capacity is somewhat smaller because the size of the diaphragm must be a compromise between high and low frequency requirements. D. Multiple Horn Single Channel System. — The multiple horn single channel system consists of a large number of multiple flare horns, each ASSEMBLY WIRING DIAGRAM Fig. A multiple horn, single channel system consisting of a cluster of multi-flare horns, each coupled to a small diaphragm. driven by a diaphragm, Fig. A comparison of the efficiency charac- teristics of a multiflare horn loud speaker. Fig. , with a multichannel system, Fig. , shows that the efficiencies are of the same order. The multiple horn single channel system eliminates many of the following dis- advantages of the multichannel system: the phase difference due to the difference in path length between the two channels; the phase difference and power loss in the filters and dividing network; the nonuniform direc- tional characteristics due to the small size of the high frequency unit; distortion in the relatively small throat of the high frequency horn. The space required for the single channel system is greater than that for the
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