H - Electricity – 04 – R
Patent
H - Electricity
04
R
179/6, 181/60
H04R 5/02 (2006.01) H04R 1/22 (2006.01) H04R 1/26 (2006.01) H04R 1/40 (2006.01) H04R 3/04 (2006.01) H04R 3/14 (2006.01) H04R 5/04 (2006.01)
Patent
CA 1211380
ABSTRACT OF THE DISCLOSURE The disclosure relates to an audio signal repro- duction system having one or more of the following features: (1) a loudspeaker having (a) a flat fre- quency response and (b) a predetermined power response; (2) two loudspeakers adapted to be posi- tioned relative to one another so that they reproduce a stereophonic image substantially independent of the listener's position along a listening line spaced from the loudspeakers and nonintersecting a line extending between the two speakers; (3) an improved cross-over network having a substantially constant input impe- dance as a function of frequency; (4) a power sensor for sensing the power applied to a transducer so that audio signals are transmitted over a first signal path through the system when the sensed power is above a predetermined minimum level, and over a second path when the sensed power falls below the minimum level; (5) a power monitoring circuit to prevent a loudspeaker driver from being overdriven; and (6) a circuit for substantially balancing the signal energy levels between two audio channels over a long period of time.
455657
Bsr North America Ltd.
Macrae & Co.
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