The Duplex Loudspeaker

The Duplex Loudspeaker is a combined two-way loudspeaker mounted in an integral unit so that the high-frequency energy is radiated from a small multicellular horn mounted on the face of the low-frequency diaphragm. — Separate permanent magnets of improved magnetic material are now used for the fields of each voice coil. — The crossover has been selected at 1200 cycles so that the high-frequency horn can be placed in the center of the low-frequency diaphragm. — A signal input up to 25 w can safely be applied to the speaker. The intermodulation products are very low as a result of the two-way principle. The configuration of the high-frequency horn produces an angle of radiation which is 60 degrees in the horizontal plane and 40 degrees in the vertical plane. Due to the type of construction a high degree of uniformity between units can be maintained in manufacture. — The unit is capable of efficient radiation beyond 15,000 cycles.

Print ISSN

0097-5834

Published

1944-09

Content type

Original Research

DOI

10.5594/J08000