Variable Flux Speaker With Repositionable Pole Piece
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional loudspeakers lack the ability to adjust magnetic flux effectively, which limits their flexibility in sound production and tone adjustment.
Innovation Solution
A variable flux speaker subassembly that includes a repositionable pole piece within a magnet structure, allowing the magnetic flux through the voice coil to be adjusted by moving the pole piece along its longitudinal axis, with optional ferrous and non-ferrous guide structures to control the magnetic field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the pole piece is made repositionable to adjust magnetic flux, then the adaptability and tone control capability are improved, but the device complexity increases due to additional guide structures and repositioning mechanisms
Solution Approach 1:
The pole piece is made repositionable along the longitudinal axis to dynamically adjust the magnetic flux through the voice coil, enabling variable flux control and tone adjustment capabilities that transform a static speaker into an adaptable audio system
Solution Approach 2:
Guide structures (ferrous and non-ferrous) are introduced as intermediary elements to control and direct the magnetic field paths, facilitating precise magnetic flux adjustment while maintaining structural integrity and guiding the pole piece movement
2Manufacturing precision
If ferrous and non-ferrous guide structures are added to control magnetic field, then the manufacturing precision and magnetic flux control are improved, but the ease of manufacture deteriorates
Solution Approach 1:
Different materials (ferrous and non-ferrous) are strategically positioned in specific locations within the magnetic circuit to create localized magnetic properties, with ferrous materials concentrating flux and non-ferrous materials providing structural support without magnetic interference
Solution Approach 2:
The guide structure combines ferrous and non-ferrous materials in a composite arrangement, leveraging the complementary properties of each material type to achieve precise magnetic flux control while maintaining mechanical strength and guiding accuracy
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables dynamic adjustment of sound pressure levels and tone characteristics by varying the magnetic flux, allowing for enhanced sound quality and user-controlled tone adjustments without affecting the amplifier drive level.
Implementation Method 1
electrical energy is supplied to the voice coil structure causing it to axially move relative to the pole piece and within the air gap formed between the top plate and pole piece
Implementation Method 2
The magnetic flux through a voice coil structure of the speaker subassembly is altered when the repositionable structure is repositioned from the first position to the second position
Data Source
AI summary
The present disclosure is directed to inventive methods and apparatus for a variable flux speaker subassembly for a loudspeaker. The variable flux speaker subassembly may contain at least one repositionable structure that is repositionable from at least a first position to a second position. The magnetic flux through a voice coil structure of the speaker subassembly is altered when the repositionable structure is moved from the first position to the second position.