Bottom-Ported Loudspeaker Enclosure With Removable Stand Clearance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing reflex loudspeaker enclosures face challenges in balancing optimal airflow through the reflex port with overall performance, often compromising on sound quality due to direct exposure to flow sound emissions and resonances, and limited flexibility in placement.
Innovation Solution
A reflex loudspeaker enclosure with the reflex port terminating at the bottom, featuring a removable stand that creates clearance between the port and the supporting surface, allowing for unobstructed airflow and improved sound directivity, while enabling versatile mounting options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the reflex port is placed on the front baffle, then the airflow path is short and direct, but the listener is directly exposed to flow sound emissions and resonances from the reflex port
Solution Approach 1:
The reflex port is extracted from the front baffle and relocated to the bottom of the enclosure. This separates the reflex port from the listener's direct line of sight, eliminating flow sound emissions and resonances from direct exposure while maintaining an efficient airflow path through the enclosed geometry
2Object-affected harmful factors
If the reflex port opening is placed on the baffle, then the airflow is direct, but the edges of openings create diffraction sources that degrade sound quality
Solution Approach 1:
The reflex port is relocated from the two-dimensional front baffle to the bottom surface of the enclosure, utilizing a different spatial dimension. This repositioning removes the port opening from the listener's direct acoustic path, eliminating diffraction from baffle edges while preserving airflow efficiency through the enclosed reflex path
3Reliability
If the stand is permanently integrated into the enclosure, then the reflex port clearance is guaranteed, but the loudspeaker loses flexibility in mounting options
Solution Approach 1:
The stand is segmented from the main enclosure body, designed as a separate removable component that attaches to the bottom. This segmentation allows the stand to provide reliable reflex port clearance when needed, while enabling complete removal or alternative mounting configurations for different installation scenarios, thus achieving both reliability and versatility
4Object-affected harmful factors
If the enclosure is placed directly on the supporting surface, then the stability is maximized, but the reflex port airflow is obstructed
Solution Approach 1:
The removable stand acts as an intermediary element between the enclosure and the supporting surface. It provides the necessary clearance for unobstructed reflex port airflow while maintaining enclosure stability during use. When removed, alternative mounting methods provide stability without airflow obstruction
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 design enhances sound quality by reducing diffraction and exposure to reflex port emissions, improves low-end performance, and allows for flexible installation without compromising stability or sound quality.
Implementation Method 1
The clearance provided by the stand elevates the reflex port opening from the surface supporting the loudspeaker thus enabling free air flow in the reflex port
Implementation Method 2
the baffle may include a large waveguide for directing the sound produced by the high-frequency transducer thus improving directivity
Implementation Method 3
Reflex loudspeaker enclosures are an advantageous construction for achieving sound reproduction in low frequencies
Data Source
Figure 1
Figure 2
Figure 3
AI summary
It is herein proposed a novel loudspeaker (100) with a reflex enclosure (110) that has the reflex port (112) terminating to the bottom (111) of the enclosure (110). The loudspeaker further includes a stand (120) which is removably attached to the bottom (111) of the enclosure (110) so as to create a clearance (C) between the bottom (111) and the surface supporting the loudspeaker (100).