Concentric magnetic configuration for loudspeakers
AssigneeAdvanced Magnetic Technologies, Inc.
InventorYou Lian Yu
Life of this patent
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Abstract
Disclosed is a concentric magnetic configuration for a speaker system which can produce a full range of frequency sounds from a single source magnet. The magnetic configuration of the present invention includes a high frequency pole plate and one or more middle yoke iron plate placed directly on a cylindrical permanent magnet wherein at least one magnetic flux controlling slot is formed beneath the high frequency pole plate and the middle yoke plate. The multiple air gaps defined by the pole plate and middle yoke iron produce a full range of frequency magnetic fields which can drive the high, medium, and low frequency voice coils.
Claims15
A magnetic configuration for a speaker system, comprising:
- a magnet;
- a high frequency pole plate, said high frequency pole plate placed on a top, center portion of said magnet;
- at least one middle yoke plate, said middle yoke plate placed on a top, periphery portion of said magnet;
- and
- an outer yoke iron defining the outer shape of said magnetic configuration, wherein said high frequency pole plate, said yoke plate, and said outer yoke iron form a plurality of air gaps, and wherein at least one magnetic flux controlling slot is formed beneath said high frequency pole plate and said middle yoke plate.
A method of providing a full range frequency sounds from a single magnetic source comprising the steps of:
- providing a permanent magnet;
- placing a high frequency pole plate and at least one middle yoke plate directly on top of said permanent magnet;
- and
- providing an outer yoke iron, wherein said high frequency pole plate, said yoke plate, and said outer yoke iron form a plurality of air gaps, and wherein at least one magnetic flux controlling slot is formed beneath said high frequency pole plate and said middle yoke plate.
Dependencies are inferred from the claim text.