The Design of Active Crossovers

Douglas Self

Acknowledgments

Preface






Crossover Basics



How Loudspeakers Work



Crossover Requirements



Crossover Types



Notch Crossovers



Subtractive Crossovers



Lowpass and Highpass Filter Characteristics



Designing Lowpass Filters: Sallen & Key



Designing Highpass Filters



Other Lowpass and Highpass Filters



Lowpass and Highpass Filter Performance



Bandpass and Notch Filters



Time-Delay Filters



Equalisation



Passive Components for Active Crossovers



Opamps for Active Crossovers



Active Crossover System Design



Subwoofer Crossovers
Motional Feedback Loudspeakers
Line Inputs
Line Outputs
Power Supply Design
An Active Crossover Design

Appendix 1: Crossover Design References

Appendix 2: US Crossover Patents

Appendix 3: Crossover and Loudspeaker Articles in Wireless World/Electronics World

Appendix 4: Loudspeaker design references

Appendix 5: Component Series E3 to 396

Index