I have a pair of ESL 63's,purchased mid eighties.Been serviced by Quad 4 years ago for crackling/popping noises.I have the same problem now.Quad are sending me the tech manual,as I live in Kenya and sending the speakers back a second time is very expensive.Any hints on what I need to check?... Foro: diplofix.com - De: Anjum - Fecha: 2009-02-09 10:12:54