Amateur-built Speakers
Electrostatic speakers enjoy some popularity among do-it-yourself (DIY) loudspeaker builders. They are one of the few types of speakers in which the transducers themselves can be built from scratch by an amateur. Basic hardware for complete ESL DIY projects is available all over the web. Such supplies include resistors and capacitors for RC-circuit frequency equalization, if necessary; step-up transformers; perforated metal sheets or grids and insulating plastics for the stators; polymer film and conductive paint (e.g. a liquid graphite suspension) for the membrane; simple tensioning equipment for proper membrane tuning; and a frame, usually of wood, to hold everything together. A widely-read resource by ESL enthusiasts is The Electrostatic Loudspeaker Design Cookbook (ISBN 978-1-882580-00-2) by notable ESL specialist Roger Sanders.
Read more about this topic: Electrostatic Loudspeaker
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—Ralph Waldo Emerson (1803–1882)