The design of active crossovers / Douglas Self.

Format:

Book

Author/Creator:

Self, Douglas, author.

Language:

English

Subjects (All):

Electric filters, Active--Design and construction.

Electric filters, Active.

Physical Description:

1 online resource (605 p.)

Edition:

1st edition

Place of Publication:

Waltham, Mass. : Focal Press/Elsevier, 2011.

Language Note:

English

System Details:

text file

Summary:

The Design of Active Crossovers is a unique guide to the design of high-quality circuitry for splitting audio frequencies into separate bands and directing them to different loudspeaker drive units specifically designed for handling their own range of frequencies. Traditionally this has been done by using passive crossover units built into the loudspeaker boxes; this is the simplest solution, but it is also a bundle of compromises. The high cost of passive crossover components, and the power losses in them, means that passive crossovers have to use relatively few parts. This limits

Contents:

Cover; The Design of Active Crossovers; Copyright; Contents; Chapter; Preface; Acknowledgments; CHAPTER 1 Crossover Basics; 1.1 What a Crossover Does; 1.2 Why a Crossover Is Necessary; 1.3 Beaming and Lobing; 1.4 Active Crossover Applications; 1.5 Bi-Amping and Bi-Wiring; 1.6 Loudspeaker Cables; 1.7 The Advantages and Disadvantages of Active Crossovers; 1.7.1 The Advantages of Active Crossovers; 1.7.2 The Disadvantages of Active Crossovers; 1.8 The Next Step in Hi-Fi; 1.9 Active Crossover Systems; 1.10 Matching Crossovers and Loudspeakers

1.11 A Modest Proposal: Popularising Active Crossovers1.12 Multi-Way Connectors; 1.13 Subjectivism; References; CHAPTER 2 How Loudspeakers Work; 2.1 Sealed-Box Loudspeakers; 2.2 Reflex (Ported) Loudspeakers; 2.3 Auxiliary Bass Radiator (ABR) Loudspeakers; 2.4 Transmission Line Loudspeakers; 2.5 Horn Loudspeakers; 2.6 Diffraction; 2.7 Modulation Distortion; Further Reading; References; CHAPTER 3 Crossover Requirements; 3.1 General Crossover Requirements; 3.1.1 Adequate Flatness of Summed Amplitude/Frequency Response On-Axis; 3.1.2 Sufficiently Steep Rolloff Slopes between the Filter Outputs

3.1.3 Acceptable Polar Response3.1.4 Acceptable Phase Response; 3.1.5 Acceptable Group Delay Behaviour; 3.2 Further Requirements for Active Crossovers; 3.2.1 Negligible Extra Noise; 3.2.2 Negligible Impairment of System Headroom; 3.2.3 Negligible Extra Distortion; 3.2.4 Negligible Impairment of Frequency Response; 3.2.5 Negligible Impairment of Reliability; 3.3 Linear Phase; 3.4 Minimum Phase; 3.5 Absolute Phase; 3.6 Phase Perception; 3.7 Target Functions; References; CHAPTER 4 Crossover Types; 4.1 All-Pole and Non-All-Pole Crossovers; 4.2 Symmetric and Asymmetric Crossovers

4.3 All-Pass and Constant-Power Crossovers4.4 Constant-Voltage Crossovers; 4.5 First-Order Crossovers; 4.5.1 First-Order Solen Split Crossover; 4.5.2 First-Order Crossovers: 3-Way; 4.6 Second-Order Crossovers; 4.6.1 Second-Order Butterworth Crossover; 4.6.2 Second-Order Linkwitz-Riley Crossover; 4.6.3 Second-Order Bessel Crossover; 4.6.4 Second-Order 1.0 dB-Chebyshev Crossover; 4.7 Third-Order Crossovers; 4.7.1 Third-Order Butterworth Crossover; 4.7.2 Third-Order Linkwitz-Riley Crossover; 4.7.3 Third-Order Bessel Crossover; 4.7.4 Third-Order 1.0 dB-Chebyshev Crossover

4.8 Fourth-Order Crossovers4.8.1 Fourth-Order Butterworth Crossover; 4.8.2 Fourth-Order Linkwitz-Riley Crossover; 4.8.3 Fourth-Order Bessel Crossover; 4.8.4 Fourth-Order 1.0 dB-Chebyshev Crossover; 4.8.5 Fourth-Order Linear-Phase Crossover; 4.8.6 Fourth-Order Gaussian Crossover; 4.8.7 Fourth-Order Legendre Crossover; 4.9 Higher-Order Crossovers; 4.10 Determining Frequency Offsets; 4.11 Summary of Crossover Properties; 4.12 Filler-Driver Crossovers; 4.13 The Duelund Crossover; 4.14 Crossover Topology; 4.15 Crossover Conclusions; References; CHAPTER 5 Notch Crossovers

5.1 Elliptical Filter Crossovers

Notes:

Description based upon print version of record.

Includes bibliographical references and index.

ISBN:

9786613164346

9781136111891

1136111891

9781136111907

1136111905

9781283164344

1283164345

9780240817392

0240817397

OCLC:

739051249