• Preface
  • I Using Scimpy
    • Overview
    • Usage
      • Impedance Testing
        • Hardware Connections
        • How to Use the Software
        • Interpreting Data
  • II Theory
    • Introduction
    • Impedance
      • Electrical Impedance
      • Impedance Matching
        • Why Impedance Matching Doesn't Matter Any More
        • Why Impedance Matching Still Matters
        • Why Impedance Measurements Still Matter
      • Measuring Impedance
      • Crossover Circuits and Impedance
    • How Do Loudspeakers Work?
      • Electrical Model
      • Mechanical Model
      • Acoustical Model
      • Combined Model
    • Loudspeaker Box Design
      • Speaker with an Infinite Baffle
      • Sealed Box Enclosure
      • Vented/Ported/Bass-Reflex Enclosures
        • Fourth Order Butterworth Filter (B4) Qts=0.383
        • Fourth Order Chebyschev (C4) Qts>0.383
        • Third Order Quasi-Butterworth (QB3) Qts<0.383
      • Graphical Tool for Enclosure Design
        • Closed or Vented Box?
      • Group Delay?
      • Excursion and Power ratings?
      • Efficiency
      • Sound Power Level (SWL) and Sound Pressure Level (SPL)
      • Including effects of loss?
      • Computer Design:
        • Two-way Speaker Design
    • random stuff
      • excursion? Max power?
    • QB3, C4 Alignment Code