Current-Driving of Loudspeakers

Author: Esa Merilainen
Publisher: CreateSpace
ISBN: 9781450544009
Category : Technology & Engineering
Languages : en
Pages : 354

Book Description
Why have the basic laws of electrodynamics been disregarded in the design of loudspeaker operations? A frank exposure of the flaws of voltage drive and a thorough, groundbreaking guide to the physically reasonable way of operating electrodynamic loudspeakers - current-drive.The author argues that the sound quality of virtually all existing speaker systems has been severely impaired by the manifoldly indefinite electromotive forces induced in the voice coil (arising from both motion and inductance), that corrupt the flow of current; and what's dramatic - the measurable evidence is plain and overwhelming. These inherent EMFs in themselves can never be suppressed by any kind of amplifier, but their detrimental effect on current and hence on sonic performance can be eliminated by adequate source impedance. Thus, the secret of valve amplifiers also becomes apparent.Written for all from the academic community to lay hobbyists. Besides new concepts for amplifier and speaker design and demonstrative projects, the book also features novel ideas for modelling, filter design, measurements, and protection; and an enlightening tutorial on analogue linear systems.For more details and sample pages, visit www.current-drive.info. Note also the comments below one review.

Current-Driving of Loudspeakers

Author: Esa Meriläinen
Publisher: CreateSpace
ISBN: 9781448695324
Category : Technology & Engineering
Languages : en
Pages : 352

Loudspeaker Handbook

Author: John Eargle
Publisher: Springer Science & Business Media
ISBN: 147575678X
Category : Science
Languages : en
Pages : 425

Book Description
The second edition of Loudspeaker Handbook follows the same general outlines as the highly successful first edition and has been augmented and updated in many areas of technology. Most notable are the developments in large-scale, programmable line arrays, distributed mode loudspeakers, and ultrasonic-based audio transduction. Additionally, the core chapters on low frequency systems, system concepts, and horn systems have been expanded to include both more analytical material and a richer array of examples. Much of the success of the first edition has been due to its accessibility both to loudspeaker engineers and to lay technicians working in the field - a point of view the author maintains in the present work. A full understanding of the underlying technology requires a fairly rigorous engineering background through the second year of professional study. At the same time, the generous use of graphs, with their intuitive thrust, will be useful to all readers. Loudspeaker Handbook, Second Edition continues to be appropriate for use in courses at the undergraduate senior level, for graduate students, and for professionals in audio and acoustical engineering.

Audio Power Amplifier Design

Author: Douglas Self
Publisher: Taylor & Francis
ISBN: 1136123814
Category : Technology & Engineering
Languages : en
Pages : 1293

Book Description
This book is essential for audio power amplifier designers and engineers for one simple reason...it enables you as a professional to develop reliable, high-performance circuits. The Author Douglas Self covers the major issues of distortion and linearity, power supplies, overload, DC-protection and reactive loading. He also tackles unusual forms of compensation and distortion produced by capacitors and fuses. This completely updated fifth edition includes four NEW chapters including one on The XD Principle, invented by the author, and used by Cambridge Audio. Crosstalk, power amplifier input systems, and microcontrollers in amplifiers are also now discussed in this fifth edition, making this book a must-have for audio power amplifier professionals and audiophiles.

The Loudspeaker Design Cookbook

Author: Vance Dickason
Publisher: Audio Amateur Incorporated
ISBN: 9781882580101
Category : High-fidelity sound systems
Languages : en
Pages : 165

Book Description

Loudspeaker Physics and Forced Vibration

Author: William H. Watkins
Publisher: Springer Nature
ISBN: 3030916340
Category : Science
Languages : en
Pages : 137

Book Description
This book is a study of the workings of dynamic loudspeakers and dynamically forced vibration. With its wealth of practical observations and real-life examples, this work will prove invaluable to the practicing motor design or loudspeaker design engineer, as well as researchers and students in electroacoustics. The book is based on a lifetime’s accumulated knowledge by acclaimed speaker designer William H. (Bill) Watkins. It differs from the usual tone of most technical books on this subject by initially presenting, and analyzing in full, the function of each key parameter of a reference dynamic loudspeaker. Each parameter’s value is then calculated and also confirmed via lab measurements to vividly illustrate all energy-transduction facets of loudspeaker operation and the forced vibration. This presentation style makes the analysis both more engaging, intuitive, and easier to comprehend compared to most previous works in the field. The principles of this book apply to all direct reciprocating motors, not just those in a dynamic loudspeaker. Unique to the book is an entire chapter dedicated to the discussion of back-EMF voltage, discussed from several technical points of view and analyzed in depth as related to the dynamic transfer of energy between the mechanical and electrical domains. Another unique feature is a detailed discussion of Watkins’ patented dual-motor concept to achieve high dynamic speaker performance in the region of its low-frequency resonance.

Loudspeakers

Author: Philip Newell
Publisher: Routledge
ISBN: 1351371193
Category : Technology & Engineering
Languages : en
Pages : 1163

Book Description
Loudspeakers: For Music Recording and Reproduction, Second Edition is a comprehensive guide, offering the tools and understanding needed to cut out the guesswork from loudspeaker choice and set-up. Philip Newell and Keith Holland, with the assistance of Sergio Castro and Julius Newell, combine their years of experience in the design, application, and use of loudspeakers to cover a range of topics from drivers, cabinets, and crossovers, to amplifiers, cables, and surround sound. Whether using loudspeakers in a recording studio, mastering facility, broadcasting studio, film post-production facility, home, or musician’s studio, or if you simply aspire to improve your music-production system this book will help you make the right decisions. This new edition provides significant updates on the topics of digital control, calibration, and cinema loudspeaker systems.

Designing Audio Power Amplifiers

Author: Bob Cordell
Publisher:
ISBN: 9781138555457
Category : Audio amplifiers
Languages : en
Pages : 772

Book Description
This comprehensive book on audio power amplifier design will appeal to members of the professional audio engineering community as well as the student and enthusiast. Designing Audio Power Amplifiersbegins with power amplifier design basics that a novice can understand and moves all the way through to in-depth design techniques for very sophisticated audiophiles and professional audio power amplifiers. This book is the single best source of knowledge for anyone who wishes to design audio power amplifiers. It also provides a detailed introduction to nearly all aspects of analog circuit design, making it an effective educational text. Develop and hone your audio amplifier design skills with in-depth coverage of these and other topics: Basic and advanced audio power amplifier design Low-noise amplifier design Static and dynamic crossover distortion demystified Understanding negative feedback and the controversy surrounding it Advanced NFB compensation techniques, including TPC and TMC Sophisticated DC servo design MOSFET power amplifiers and error correction Audio measurements and instrumentation Overlooked sources of distortion SPICE simulation for audio amplifiers, including a tutorial on LTspice SPICE transistor modeling, including the VDMOS model for power MOSFETs Thermal design and the use of ThermalTrak(tm) transistors Four chapters on class D amplifiers, including measurement techniques Professional power amplifiers Switch-mode power supplies (SMPS). design Static and dynamic crossover distortion demystified Understanding negative feedback and the controversy surrounding it Advanced NFB compensation techniques, including TPC and TMC Sophisticated DC servo design MOSFET power amplifiers and error correction Audio measurements and instrumentation Overlooked sources of distortion SPICE simulation for audio amplifiers, including a tutorial on LTspice SPICE transistor modeling, including the VDMOS model for power MOSFETs Thermal design and the use of ThermalTrak(tm) transistors Four chapters on class D amplifiers, including measurement techniques Professional power amplifiers Switch-mode power supplies (SMPS). the use of ThermalTrak(tm) transistors Four chapters on class D amplifiers, including measurement techniques Professional power amplifiers Switch-mode power supplies (SMPS).

High Performance Loudspeakers

Author: Martin Colloms
Publisher: John Wiley & Sons
ISBN: 1118691121
Category : Technology & Engineering
Languages : en
Pages : 560

Book Description
High Performance Loudspeakers, Sixth Edition is a fully revised and updated version of the highly successful guide to the design and specifications of high quality loudspeakers and loudspeaker systems. Each chapter has been substantially revised reflecting the many changes in the technology of loudspeakers. These revisions take the form of much new research and accompanying illustrations, with a radically new theoretical section, allied to in-depth coverage of the most important advances in the art of loudspeaker design. By clearly and practically analysing these many developments the authors have produced an authoritative loudspeaker designer's bible. Key features of the Sixth Edition include: Radically new chapter on acoustic theory, developments in home theatre and surround systems, in speaker system design. Also crossover networks with new digital synthesis methods, and extensive reporting on CAD software New measurement systems and techniques are complemented by recent psychoacoustic research data. Expanded material on sub-sat design, 2pi and boundary speaker design, further work on optimum low frequency synthesis for improved group delay. New materials technology including ceramic and diamond diaphragms, plus first publication of the theory of the BMR, a fascinating hybrid driver technology employing a synthesis of bending wave and pistonic action and which can approach the directivity of a point source. Glossary; a valuable view of electroacoustic terms and definitions to guide all readers. Acknowledged industry-wide as the definitive work on speaker design and analysis, this book is essential reading for audio engineers, speaker designers, equipment designers and students of acoustic engineering, electronics and electro-acoustics. It will also prove invaluable to students of electronics, broadcasting and recording techniques, and be of interest to amateur loudspeaker builders, authors and journalists in audio.

Loudspeaker and Headphone Handbook

Author: John Borwick
Publisher: CRC Press
ISBN: 1136120866
Category : Technology & Engineering
Languages : en
Pages : 736

Book Description
Written by a team of experts, the Loudspeaker and Headphone Handbook provides a detailed technical reference of all aspects of loudspeakers and headphones: from theory and construction of transducer drive units and enclosures, to such practical matters as construction, applications in rooms, public address, sound reinforcement, studio monitoring and musical instruments. Loudspeaker measurements and subjective evaluation are treated in equal detail and headphones are discussed comprehensively. This third edition takes account of recent significant advances in technology, including: · the latest computer-aided design systems · digital audio processing · new research procedures · the full range of loudspeakers · new user applications.