Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1987-07-16
1990-08-28
Isen, Forester W.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
381 55, H04R 2700
Patent
active
049532189
ABSTRACT:
A foreground music sound system includes at least one complementary array of speakers (12) comprising a bass frequency speaker (20) and a plurality of microspeakers (14-18). The complementary speaker array may be designed to provide full frequency response with substantially uniform sound coverage for a wide variety of acoustic environments. A current amplifier (25) is responsive to a music signal input and a microphone signal input to directly drive the speakers. The amplifier (25) is a high current, low impedance amplifier so that it is capable of driving a large number of speakers, without the need for matching transformers at each speaker.
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