The design of active crossovers
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...
| Otros Autores: | |
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| Formato: | Libro electrónico |
| Idioma: | Inglés |
| Publicado: |
Waltham, Mass. :
Focal Press/Elsevier
2011.
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| Edición: | 1st edition |
| Materias: | |
| Ver en Biblioteca Universitat Ramon Llull: | https://discovery.url.edu/permalink/34CSUC_URL/1im36ta/alma991009628282006719 |
Tabla de Contenidos:
- 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
