7 Closed-Box Loudspeaker Systems7.1 ModelingtheBox7.2 The Analogous Circuits.7.3 The Volume Velocity Transfer Function.7.4 The On-Axis Pressure Transfer Function.7.5 Effect of the Box on the System Response.7.6 Sensitivity of the Lower Cutoff Frequency.7.7 System Design with a Given Driver.7.8 System Verification.7.9 System Design From Specifications. .7.10 A SPICE Simulation Example.7.11 Problems