1.1 BACKGROUND TO THE STUDY
A loudspeaker box is a purpose-engineered cabinet in which speaker drivers and associated electronic hardware, such as crossover circuits and amplifiers, are mounted. Speaker box may range in design from simple, rectangular particle-board boxes to very complex cabinets that incorporate composite materials, internal baffles, ports and acoustic insulation.
The primary role of the box is to prevent sound waves generated by the rearward-facing surface of the diaphragm of an open driver interacting with sound waves generated at the front of the driver. Because the forward- and rearward-generated sounds are out of phase with each other, any interaction between the two in the listening space creates a distortion of the original signal as it was intended to be reproduced. Additionally, because they would travel different paths through the listening space, the sound waves would arrive at the listener’s position at slightly different times; introducing echo and reverberation effects not part of the original sound.
The box also plays a role in managing vibration induced by the driver frame and moving air mass within the box, as well as heat generated by driver voice coils and amplifiers (especially where woofers and subwoofers are concerned). Sometimes considered part of the box, the base may include specially designed “feet” to decouple the speaker from the floor.
Note: In this material speaker box, enclosure and cabinets will be used interchangeably.
1.2 STATEMENT OF THE PROBLEM
• Can speaker box handle the vibrations cause by the drivers with ease?
• Is it possible to design a speaker box that minimized vibration while playing?
• Is loudspeaker enclosure important in acoustics?
• What are the steps in loudspeaker enclosure design? Etc.
1.3 OBJECTIVE OF THE PROJECT
1. To assembly a speaker box for musical use.
2. To study the importance of speaker enclosure.
3. To examine the effect of using speaker without it cabinet; (box).
4. To save as a reference material for academic purpose.