Loudspeakers

Part 1

• Why are loudspeakers crucial components of home theater?
• Why price is not necessarily related to speaker performance?
• Why is it important to understand sound and its physical characteristics?
• What is sound?
• How is the acoustic energy transferred to the air?
• How does sound propagate?
• How do we describe a wave?
• What is the wavelength of an audio wave?
• What is the period of an audio wave?
• What is the human hearing frequency range? What is the frequency of sound?
• What is the speed of sound through air?
• What is the relationship of the basic sound wave parameters of the period T, the wavelength Ñ‘, the frequency f and the speed c?
• How is the frequency related to the wavelength of the audio wave?
• Which frequencies are most difficult to control and why?
• What is the role of a loudspeaker?
• What complicates the task of speaker manufacturers?
• What do speaker manufacturers aim to do?
• What energy conversion do loudspeakers perform?
• What are some of the challenges speaker manufacturers face?
• What is the function of the crossover circuit?

Part 2

• What are the types of materials used for the manufacture of tweeter diaphragms?
• What are some highly regarded types of tweeters?
• What determines the quality of a speaker's cabin?
• What kind of diaphragms do middle and low frequency speakers require?
• Why are Kevlar and Alucone speakers an industry favorite for middle frequencies?
• What are the characteristics of high quality subwoofers?
• What are the characteristics of high quality subwoofers?
• What are the benefits of using Diecast Baskets in speakers?
• Why is a cabinet used in loudspeakers?
• What are the ideal characteristics of a loudspeaker's cabinet?
• What determines the quality of a loudspeaker's cabinet?
• What are the advantages of using Narrow Cabinets?
• Why do we need speaker enclosures?
• What are the basic types of loudspeaker enclosures?
• What is the role of the enclosed air in an acoustic suspension enclosure?
• How does the passive radiator behave?
• How does a ported enclosure behave?
• What are the advantages of horn loaded speakers?
• Where are horn speakers primarily used?
• What is the task of the subwoofer?

Part 3

• What is the difference between active and passive subwoofers?
• What are the principles of operation of electrodynamic speakers?
• What component is at the heart of electrody­namic speakers?
• Where is the voice coil placed?
• What is the function of the voice coil?
• What is the use of the special liquid (ferrofluid) contained in the tweeters?
• What is the correlation between the diaphragm diameter and the driver’s mass?
• What is the operation principle of magnetostatic speakers?
• What are ribbon speakers?
• What is the difference between electrostatic and magnetostatic speakers?
• What is the characteristic of electrostatic speakers?
• What do we mean by "active" speakers?
• How are the drivers of a dipole speaker placed?
• Why do common speakers interfere with the TV?
• How do we magnetically shield a speaker?
• What are the advantages of a subwoofer/satellite speaker system?
• What is the difference between two and three way speakers?
• What is speaker sensitivity why is it important?
• What is the use of speaker stands?