Build Your Own 5.1 Home Theater System with Speaker Building 201 by Ray Alden
Speaker Building 201: A Comprehensive Course in Speaker Design by Ray Alden
If you are interested in learning how to design and build your own speakers, you might want to check out Speaker Building 201, a book by Ray Alden that offers a complete guide to speaker design with 11 fully detailed projects, including a 5.1 home theater system. In this article, we will review what speaker building is, who Ray Alden is, what his book covers, and why you should read it.
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The Basics of Speaker Design
Speaker building is the art and science of creating speakers that reproduce sound accurately and pleasingly. Speakers are devices that convert electrical signals into sound waves that we can hear. Speakers consist of several components, such as drivers, crossovers, enclosures, and accessories.
Drivers are the parts of speakers that produce sound by vibrating a cone or a dome attached to a coil of wire that moves in a magnetic field. Drivers come in different types and sizes, such as woofers, midranges, tweeters, subwoofers, etc., depending on their frequency range and output level.
Crossovers are circuits that divide the electrical signal into different frequency bands and send them to the appropriate drivers. Crossovers can be passive or active, depending on whether they use passive components (resistors, capacitors, inductors) or active components (amplifiers, filters).
Enclosures are boxes or cabinets that house the drivers and crossovers. Enclosures affect the sound quality and performance of speakers by providing support, protection, isolation, damping, tuning, etc. Enclosures come in various shapes and sizes, such as sealed, ported, horn-loaded, etc., depending on their design principles and objectives.
Accessories are additional items that enhance the functionality or appearance of speakers, such as grilles, terminals, spikes, stands, etc.
To design speakers, you need to measure their parameters and performance using various tools and methods, such as multimeters, impedance meters, frequency generators, sound level meters, microphones, software programs, etc. You also need to choose the right drivers, crossovers, enclosures, and accessories that suit your goals, budget, and preferences.
The Projects in Speaker Building 201
Speaker Building 201 is a book by Ray Alden that teaches you how to design and build speakers using 11 completely designed speaker systems, including a 5.1 home theater system. The book covers the theory and practice of speaker design in a clear and concise manner, with plenty of illustrations, diagrams, tables, charts, formulas, etc.
The book contains 11 projects that range from simple to complex, from small to large, from conventional to exotic. Each project includes a detailed description of the design goals, the drivers, the crossover, the enclosure, the accessories, the assembly, the testing, and the results. The projects are:
Project 1: A simple two-way bookshelf speaker
Project 2: A two-way floor-standing speaker with a transmission line enclosure
Project 3: A three-way floor-standing speaker with a vented enclosure
Project 4: A three-way floor-standing speaker with a sealed enclosure
Project 5: A three-way floor-standing speaker with a passive radiator enclosure
Project 6: A three-way floor-standing speaker with a horn-loaded tweeter
Project 7: A three-way floor-standing speaker with a ribbon tweeter
Project 8: A four-way floor-standing speaker with a planar magnetic tweeter
Project 9: A four-way floor-standing speaker with an electrostatic tweeter
Project 10: A subwoofer with a vented enclosure
Project 11: A 5.1 home theater system with five satellite speakers and a subwoofer
To follow the projects in the book, you need to have some basic tools and materials, such as a saw, a drill, a screwdriver, a soldering iron, a glue gun, wood, screws, wires, etc. You also need to have some basic skills and knowledge in woodworking, electronics, and acoustics. However, you don't need to be an expert or a professional to build speakers. The book provides step-by-step instructions and tips that will help you along the way.
The 5.1 Home Theater System Project
One of the most exciting and challenging projects in Speaker Building 201 is the 5.1 home theater system project. A 5.1 home theater system is a surround sound system that consists of five satellite speakers (front left, front right, center, surround left, surround right) and a subwoofer. A 5.1 home theater system can create an immersive and realistic sound experience for movies, music, games, etc.
To design and build a 5.1 home theater system using Speaker Building 201, you need to follow the instructions and diagrams in Project 11 of the book. The project involves designing and building five identical two-way satellite speakers with vented enclosures and a subwoofer with a vented enclosure. The satellite speakers use a 5-inch woofer and a 1-inch dome tweeter each. The subwoofer uses a 12-inch woofer. The crossover frequency for the satellite speakers is 3 kHz. The crossover frequency for the subwoofer is 80 Hz.
The specifications and features of the 5.1 home theater system project are:
ParameterValue
Satellite speaker sensitivity87 dB/W/m
Satellite speaker impedance8 ohms
Satellite speaker power handling50 W RMS
Satellite speaker frequency response80 Hz - 20 kHz (+/-3 dB)
Satellite speaker dimensions (H x W x D)10 x 7 x 9 inches
Satellite speaker weight8 lbs
Subwoofer sensitivity90 dB/W/m
Subwoofer impedance4 ohms
Subwoofer power handling200 W RMS
Subwoofer frequency response30 Hz - 80 Hz (+/-3 dB)
Subwoofer 71b2f0854b