Theory Design Of Loudspeaker Enclosures

This volume seeks to lay the groundwork for readers who want to understand the general functions of loudspeaker enclosure systems and eventually experiment with their own designs. Written for design engineers and technicians, students, and intermediate-to-advanced acoustics enthusiasts, it presents a general theory of loudspeaker enclosure systems. Featuring illustrated and numerical examples, the book examines diverse developments in enclosure design, and studies the various types of enclosures as well as varying parameter values and performance optimisation. Topics examined include: the synthesis of vented systems; infinite-baffle and closed-box systems; electro-acoustical relations; and reflex response relationships.

With this book, anyone can become a speaker builder. You don't need an elaborate workshop, expensive analytical equipment, or sophisticted software. Learn the concepts you need or chhose any of the eleven tested and proven speaker designs included in the book. Contains all the information the speaker builder needs to design and build a first-rate system, one that surpasses higher-cost commercial products.

Build your own pro-quality loudspeakers. Don't settle for overpriced speaker systems from audio "boutiques." in Designing, Building and Testing Your Own Speaker System with Projects, Fourth Edition, David Weems guides you step-by-step through dozens of complete projects--from low-end to high-end. Packed with expert advice and cutting-edge design procedures, this complete do-it-yourself manual gives you invaluable tips and techniques for choosing the best woofers, tweeters and other speaker components...constructing speaker boxes...deciding on suitable crossover networks...selecting enclosures...designing unusual systems such as the double-chamber reflex...using PCs to design speaker systems...testing your completed system...and much more. You even get an innovative computer program that helps you dramatically speed the design and test process.

Introduction to Loudspeaker Design is written for students, technicians, engineers and hobbyists seeking an overview of the technology of loudspeakers. Starting with a brief history of audio developments the book begins by introducing the concepts of frequency, pitch and loudness and proceeds to develop the idea of a loudspeaker as a system. The book covers such topics as loudspeaker design tradeoffs, spatial loading, diffraction loss, cavity effect and enclosure construction. A complete chapter is devoted to the subject of crossover design including design equations. The second edition adds a new chapter on simulation and analysis which includes design equations for closed and vented type speakers. The appendices contain technical references, design aids, glossaries and a chart depicting 18 different loudspeaker enclosure types. The author is a physicist/audio design engineer with over 35 years experience in the research and development of audio products spanning both hardware and software. His WinSpeakerz, TrueRTA and DATS software applications are widely used throughout the audio industry as tools for simulating and measuring loudspeaker performance. Captain Murphy served as a space systems analyst for NORAD during his military career. Changes for the Second Edition: The second edition brings new material and polishes the first edition with many new or improved illustrations. Chapter 2 was expanded with the second half split into a new Chapter 3 titled "Speaker Response Functions." The discussion of Thiele-Small parameters has been expanded and now covers small-signal parameters vs. large-signal parameters as it explores the role of the test signal level in parameter measurement. The crossover design chapter has been expanded to include formulas for calculating component values for the most popular crossover types. Equations have been added for calculating impedance compensation and attenuation networks. The old Chapter 7 FAQ material was integrated into other chapters as appropriate. A new Chapter 8 titled "Loudspeaker Simulation" has been added and introduces loudspeaker equivalent circuit analysis with equations for calculating the magnitude and phase responses of closed and vented loudspeaker systems. Additional design equations are introduced and then examples are given for calculating the responses of a closed box and a vented box loudspeaker. Detailed design equation summaries are given for closed and vented boxes. Appendix C was added to provide a glossary of symbols and a glossary of terms. The box type charts were moved to Appendix D.