About the Book
This introduction to loudspeakers and enclosure design explores the many types of enclosure and drive units. Crossover units are also explained: the various types, how they work, the distortions thay produce and how to avoid them. Also included is a step-by-step description of the construction of the "Kapellmeister" loudspeaker enclosure, a design that involves novel features which overcome many of the diadvantages of more conventional types. It is a transmission line speaker that has remarkable stereo imaging, an uncoloured musical sound, occupies minimal floor space and is inexpensive to build.
Table of Contents:
The moving coil driver - cone surround, cone materials, cone resonance, delayed resonance, the coil, effects of heat, the magnet, dedicated drivers, disadvantages, co-axial, drivers, controlled flexure, cone velocity and radiation resistance, doppler effect, the tweeter, phasing; alternative drivers - electrostatic speakers, push-pull, charge migration, frequency response anomalies, flashover, orthodynamic drivers, conductor pattern, Hall air motion transformer, ribbon tweeter, plasma tweeter, Piezzo tweeter; boxing clever -baffle/doublet, doublet, adding sides, infinite baffle, damping and Q, enclosure size, sensitivity, dimensional resonance, panel resonance, reflected waves, considerations, wall speakers, reflex enclosure, interaction at resonances, disadvantages, auxiliary bass radiator, impedance, enclosure design, summary, the horn, efficiency, flares, throat design, domestic Hi-Fi horns, transmission line - labyrinth, resonant pipe, practical problems; adsorbents - panel damping, air resonance, materials, adiabatic propagation, isothermal propagation; crossover networks - capacitive reactance, inductive reactance, first-order networks, higher orders, band-pass filters, components, ringing, cone oscillation damping, dispensing with the crossover; which parameter matter? cost, size, frequency response, phasing, ringing, power rating and sensitivity, impedance, distortion; Kapellmeister design brief - closed pipe; building the Kapellmeisters - 1 to 12 stages, performance, listening tests, how much bass boost? treble boost.
