Colloms High Performance Loudspeakers

6. Auflage 2013
ISBN: 978-0-470-09431-0
Verlag: John Wiley & Sons
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 560 Seiten, E-Book

High Performance Loudspeakers, Sixth Edition is a fully revised andupdated version of the highly successful guide to the design andspecifications of high quality loudspeakers and loudspeakersystems. Each chapter has been substantially revised reflecting themany changes in the technology of loudspeakers. These revisionstake the form of much new research and accompanying illustrations,with a radically new theoretical section, allied to in-depthcoverage of the most important advances in the art of loudspeakerdesign. By clearly and practically analysing these manydevelopments the authors have produced an authoritative loudspeakerdesigner's bible.
Key features of the Sixth Edition include:
* Radically new chapter on acoustic theory, developments in hometheatre and surround systems, in speaker system design. Alsocrossover networks with new digital synthesis methods, andextensive reporting on CAD software
* New measurement systems and techniques are complemented byrecent psychoacoustic research data.
* Expanded material on sub-sat design, 2pi and boundary speakerdesign, further work on optimum low frequency synthesis forimproved group delay.
* New materials technology including ceramic and diamonddiaphragms, plus first publication of the theory of the BMR, afascinating hybrid driver technology employing a synthesis ofbending wave and pistonic action and which can approach thedirectivity of a point source.
* Glossary; a valuable view of electroacoustic terms anddefinitions to guide all readers.
Acknowledged industry-wide as the definitive work on speakerdesign and analysis, this book is essential reading for audioengineers, speaker designers, equipment designers and students ofacoustic engineering, electronics and electro-acoustics. It willalso prove invaluable to students of electronics, broadcasting andrecording techniques, and be of interest to amateur loudspeakerbuilders, authors and journalists in audio.

Autoren/Hrsg.

Colloms, Martin

Inhaltsverzeichnis

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-coilloudspeaker.
2.3 Radiated pressures.
2.4 Relating the twoport model to low-frequency analogouscircuits.
2.5 Higher modes of the loudspeaker diaphragm.
References.
3. Transducers, Diaphragms and LoudspeakerTechnology.
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 pressureresponse.
3.10 Magnet systems.
3.11 Film transducers.
3.12 BMR; the balanced mode radiator.
References.
Bibliography.
4. Low-frequency System Analysis: Room Environments and2 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.