saps - 4-9-2005 at 16:51
how do static speakers such as this one: [electronics.howstuffworks.com] accumulate static charge
Lambda - 4-9-2005 at 17:44
Saps, they are based on the static electricity principle (charges attracting or repelling each other) of a charged (immobile) central membrane (at a
fixed high voltage). The membrane that produces audio motion (mobile) is made of a ultralight metalized (electricity conducting) membrane. This
ultralight membrane is charged by the altenating audio signal. The output signal of an audio amplifier is fairly low in voltage (except valve
amplifiers before the output transformer), this signal is stept-up by modulating a transformer (with the audio signal) which has a large step-up
voltage ratio. A valve amplifier has to do the opposite, for the output voltage is the result of a step-down transformer.
How to Make Electrostatic Loudspeakers:
http://www.amasci.com/esloud/eslhwto.html