Construction Of 150 Watts 162 Audio Loudspeaker
Designing a 150-watt 162 audio loudspeaker involves several key components and considerations. First, selecting appropriate drivers, such as woofers, tweeters, and mid-range speakers, is crucial to ensure balanced sound reproduction across frequencies. Next, optimizing the speaker enclosure design, whether it’s sealed, ported, or a transmission line, is essential for enhancing bass response and overall sound quality. Additionally, incorporating a crossover network to divide the audio signal into appropriate frequency bands for each driver helps to prevent distortion and maintain clarity. Furthermore, selecting high-quality materials for construction, such as sturdy cabinet materials and efficient wiring, contributes to the durability and performance of the loudspeaker. Finally, fine-tuning the design through testing and adjustment processes ensures optimal audio output and customer satisfaction, making the 150-watt 162 audio loudspeaker a versatile and high-performance audio solution for various applications.
Audio loudspeaker (output transducer) is on of the most essential and powerful device used in telecommunication system. This is device capable of converting electrical signal into sound and vice versa. It is made up of few time of non-magnetic wire wound on a light cylindrical former that is mounted so that it can move freely insides the magnetic field of a strong permanent magnet. The speaker cone it attached to the voice coil and attached with a flexible mounting to outer ting of the speaker support.
The device was contracted and operated based on the principles of electromagnetic induction which was clearly stated by faradays and langue laws of electromagnetic induction. This speaker has power rating of low watts and 16ohms impedance
The materials used in made up of particle board of ¾ thickness tweeter and cross over network..
This device constructed locally can compete favourably well with the imported one (with international standard) the information in this write up comprises of the construction operation a detailed information of each component parts and various used of output transducer (loudspeaker).
Title Page
Certification
Dedication
Abstract
Table Of Content
Chapter One
1.0 Introduction
1.1 Background Information
1.2 Aim
Chapter Two
2.0 Literature Review
2.1 Function Of Various Parts Of Loudspeaker
2.2 Working Principles Of A Loudspeaker
Chapter Three
3.0 Meaning Of Crossover
3.1 Component Parts Of Crossover
3.2 Crossover Design
3.3 General Methodology Of Crossover Design
Chapter Four
4.0 Meaning Of A Tweeter
4.1 Operation Of A Tweeter
4.2 Dome Fluid
4.3 Ferro Fluid
4.4 Types Of Tweeter
Chapter Five
5.0 Enclosure
5.1 Requirement Of Speaker Enclosure
Chapter Six
6.0 Conclusion
6.1 Speaker Safety
6.2 Cost Of Construction
6.3 Discussion
References
BACKGROUND INFORMATION OF STUDY
Imagine the difficulty it would result in telecommunication system is not the invent of output transducer (loudspeaker) it cannot be over emphasized the vital role of loudspeaker in distant communication system A deceive capable of converting electrical signal to audio (sound) signal “As water is very vital to aquatic organisms so as transducer is very necessary in telecommunication system.
The loudspeaker are almost always the limiting element on the fidelity of a reproduced sound in either home or theatre. The loudspeaker involve electromechanical process where the applied audio signal must move a cone or other mechanical device to produce sound like the original sound wave. The quality of sound produced by the loudspeaker is dependent on the quality of the loudspeaker (ie its Wattage impedance rating) the enclosure and the magnitude of signal input to the loudspeaker.
Because there is a definite “home” or equilibrium position for the speaker cone and there is elasticity of the mounting structure there is inevitability a free cone resonant frequency like that of a mass on a spring. The frequency can be determined by adjusting mass and stiffness of the cone and voice coil and it can be damped & broadened by the nature of the construction. But that natural mechanical frequency of vibration is always there and enhances the frequency range near resonance.
Enclosure: Enclosure employed in this construction comprises of ¾ particle board skilled with cloth materials to beautify its surface. A primary function of a speaker enclosure is to keep the sound coming from the back of a driver come from going into the room. The sound from the back of a driver is 180 degrees out of phase with the sound from the front destroying the low frequency performance.
To limit all these deficiencies all loudspeaker enclosure must posses the following features since resonant frequency is a barrier to quality sound production
1. It must be air tight
Has walls that do not vibrate a lot
Does not have strong internal resonance
Isolates each driver (speaker) from the other
Has a gemmating compatible with good sound reproduction
For more efficiency and accurate sound reproduction this device is equipped with cross over network and tweeter
AIM AND OBJECTIVES
The aim of this work is to locally construct an audio speaker that will complete with the imported ones
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Construction Of 150 Watts 162 Audio Loudspeaker:
Building a 150-watt, 16-ohm audio loudspeaker requires some understanding of electronics, speaker design, and access to the necessary components and tools. Please note that this is a simplified guide, and it’s important to follow safety precautions and consult speaker design resources for more detailed information. Here’s a general outline of the process:
Materials and Tools:
- Speaker Driver: Select a 16-ohm, 150-watt speaker driver. Ensure it has the desired frequency response and sensitivity for your application.
- Speaker Cabinet: Build or purchase a speaker cabinet that accommodates your speaker driver. The cabinet should be properly braced and designed for optimal sound performance. You may want to consider using MDF (medium-density fiberboard) or plywood for the cabinet.
- Crossover Network: If your speaker system includes multiple drivers (e.g., a woofer and a tweeter), design or purchase a crossover network that separates the frequencies correctly. This ensures that each driver only receives the frequencies it can handle.
- Speaker Wire: High-quality speaker wire for connecting the driver(s) to the amplifier.
- Amplifier: Choose an amplifier that can deliver 150 watts of power at 16 ohms or match the speaker’s impedance and power handling specifications.
- Screws, Glue, and Sealant: Fasteners for securing components, wood glue for cabinet assembly, and sealant for sealing any cabinet seams.
Steps:
- Design the Speaker Cabinet: If you’re designing the cabinet yourself, consider the size, shape, and internal volume based on the speaker driver’s specifications. Ensure that it’s properly braced to minimize vibrations and resonance.
- Build or Assemble the Cabinet: Cut the wood panels according to your cabinet design, assemble them using wood glue and screws, and seal any seams to prevent air leaks.
- Install the Speaker Driver: Mount the speaker driver in the cabinet. Use screws and secure it properly to avoid vibrations and rattling.
- Install the Crossover Network (if applicable): If your speaker system includes a crossover network, install it inside the cabinet, connecting it to the speaker driver(s) and binding posts for external connections.
- Wiring: Connect the speaker driver(s) to the crossover network (if used) and the binding posts on the cabinet using high-quality speaker wire.
- Test the Speaker: Connect the speaker to your amplifier and audio source. Gradually increase the volume to test its performance, making sure not to exceed the speaker’s power handling capabilities.
- Fine-tuning: Adjust the crossover network settings if necessary to achieve the desired sound quality.
- Enclosure Finishing: Paint or finish the speaker cabinet to your liking, and add a speaker grille if desired.
- Enjoy Your Loudspeaker: Once everything is set up and tested, you can use your 150-watt, 16-ohm audio loudspeaker.
Please note that building a speaker involves technical expertise, and it’s essential to follow safety guidelines when working with electrical components. If you’re not experienced with speaker design, consider seeking assistance from a professional or consulting resources dedicated to speaker building. Additionally, be cautious with electrical connections to prevent damage to your equipment or personal injury.