Speakers: Ceramic, Alnico, and Electrodynamic....a Basic Discussion

This video is a basic discussion of the construction and function of three types of audio speakers: Ceramic, Alnico, and Electrodynamic. Topics include voice coils, wattage, impedance vs resistance, electromagnet vs permanent magnet, voice coil testing, effects of signal polarity on cone motion, field coils, and humbucking coils. To demonstrate construction principles, a speaker is dissected and the component parts are examined and explained. This presentation is best suited to individuals seeking a basic understanding of audio speakers. Here is a link to the 1940 National Dobro video:    • 1940 National Dobro Amp: 73 Years Old, 99%...   Here is a link to an EIA Code site (to identify speaker and component manufacturers): http://www.thespeakershop.com/speaker... If you enjoy videos featuring classic vintage tube amps, jukeboxes, bizarre homebuilt electronic marvels, and clear, concise technical presentations, then please subscribe to my channel. You will gain immediate access to 100 additional videos, and (if you activate the service) you will be notified each time a new video is posted. Thanks for watching !!!