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Full 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.This book features 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. It includes a 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.
Contents
Preface to the First Edition. Preface to the Fifth Edition. Preface to the Sixth Edition. Notation. Glossary. 1. General Review. 1.1 Developments in system design. 1.2 Performance conflicts. 1.3 The stereo illusion. 1.4 Sensitivity and impendance. 1.5 Enclosures. 1.6 Drive units. 1.7 The room Bibliography. 2. Theoretical Aspects of Diaphragm Radiators. 2.1 Radiation from simple sources. 2.2 Electromechanics of a hypothetical moving-coil loudspeaker. 2.3 Radiated pressures. 2.4 Relating the twoport model to low-frequency analogous circuits. 2.5 Higher modes of the loudspeaker diaphragm. References. 3. Transducers, Diaphragms and Loudspeaker Technology. 3.1 Dome radiators. 3.2 Velocity of sound in a diaphragm. 3.3 Compensation of dome characteristics. 3.4 Cone behaviour. 3.5 Cone parameters. 3.6 Cone shape. 3.7 Motor systems. 3.8 Moving-coil motor linearity. 3.9 Influence of magnetic field strength on loudspeaker pressure response. 3.10 Magnet systems. 3.11 Film transducers. 3.12 BMR; the balanced mode radiator. References. Bibliography. 4. Low-frequency System Analysis: Room Environments and 2 Theory. 4.1 General considerations. 4.2 LF system analysis. 4.3 Closed-box system. 4.4 Reflex or vented enclosures. 4.5 Band-pass enclosure designs and LF equalization. 4.6 Longevity, reliability, tolerances, climate. 4.7 Transmission-line enclosures. 4.8 Sub-woofers and extended low frequencies. 4.9 Horn loading. 4.10 Line sources. 4.11 The moving-coil spaced dipole. 4.12 Bi-polar speakers. References. Bibliography. 5. Moving-coil Direct-radiator Drivers. 5.1 Moving-coil motor system. 5.2 Low frequency, bass units. 5.3 LF/MF units. 5.4 Mid-frequency units. 5.5 High-frequency units. 5.6 Full-range units. 5.7 Dynamics and engineering. References. Bibliography. 6. Systems and Crossovers. 6.1 Passive loudspeaker system design. 6.2 The crossover network. 6.3 General design considerations, voicing and balancing. 6.4 The amplifier-loudspeaker interface. 6.5 Active loudspeakers: Electronic filter crossovers. 6.6 Current drive. 6.7 Digital loudspeakers. References. Bibliography. 7. The Enclosure. 7.1 Enclosure materials. 7.2 Enclosure resonances. 7.3 Magnitude of undamped panel output. 7.4 Audibility of resonance. 7.5 Resonance control, damping materials and bracing. 7.6 Standing-wave modes. 7.7 Driver-cone transmission of internal resonance. 7.8 Cabinet construction. 7.9 Diffraction and cabinet shape. 7.10 Drive-unit mounting: clamped or decoupled. 7.11 Open baffles: dipole 'enclosure'. 7.12 Loudspeaker supports: placement. References. Bibliography. 8. Home Theatre and Surround Sound. 8.1 Stereo Compatibility. 8.2 Potential multi-channel advantage. 8.3 THX. 8.4 Speaker design. References. Bibliography. 9. Loudspeaker Assessment. 9.1 Loudspeaker specifications, standards and distortions. 9.2 Measurement and evaluation: introduction. 9.3 Objective measurements. 9.4 Subjective evaluation. References. Bibliography. Appendix A: CAD Software. Index.
