Quad ESL-2912

摘要

When I visited Quad's Huntingdon factory in 1981 to talk to Peter Walker about development of the new Quad electrostatic loudspeaker, the ESL-63, he was of the opinion that, with this latest design, he'd done pretty much all that could be done to perfect what has historically been considered the weakest link in the chain of sound reproduction: the loudspeaker. So long as air has to be moved using a 'paddle', he said, the push-pull, constant-charge electrostatic loudspeaker - with its vanishingly light diaphragm, uniformly applied driving force and inherent linearity - continued to represent the best way to generate high-quality sound, just as it had when he developed the original Quad Electrostatic in the 1950s [see HFN Apr '10].