Condenser Loud-Speaker with Flexible Electrodes

Condenser loud speakers employing flexible electrodes are described together with their uses as the input to an amplifier or for reproducing from the output of an amplifier unit. One electrode diaphragm utilizes an impregnated cloth carrying a conductive coating. The cooperating electrode is also flexible and air-permeable. Textile threads at spaced distances are used to maintain the separation between the operating electrodes and to reduce backlash rustle noises. The improvement in response, fidelity, and efficiency, as well as durability, are set forth, accompanied by examples of suitable operating circuits. It is pointed out that such condenser speakers operate most favorably with an amplifier arranged to compensate for their characteristics.