Seven pages long with charts. The benchmark article discusses the merits of analysis with the Energy vs. Time Curve. Topics of rear fill, and the differences between direct and reflected energy are discusses. A must read for serious competitors. Samping Factor Advanced Topic Amplifier Damping Damping factor is defined and the effects are explained for various loads and power levels.
Output impedance is defined and a method of calculating damping factor is presented.
Examples and schematics are presented. This benchmark article describes the physical properties that determine the cut-off frequency for horn speakers. Radiation resistance and the physical dimensions of the horn are described. This is a must-read article for anyone serious about horn loaded compression drivers. Advanced Topic Corner Loading and Reality Benchmark Richard Clark article on low frequency reproduction inside a sealed listening environment.