QUAD ESL 63 User Manual

Details on how to unpack the Quad ESL-63 loudspeaker and retain original packaging for potential returns.

Instructions for returning the loudspeaker for servicing, contact information, and availability of technical data.

Outlines the twelve-month warranty against defects, conditions for replacement parts, and consumer rights.

Explains the Quad ESL-63 as a full-range electrostatic loudspeaker doublet with polarized diaphragm and concentric electrodes.

Information on connecting the loudspeaker to A.C. mains, voltage requirements, and the use of a two-core cable.

Details on input connection types (4mm sockets/binding posts) and recommended speaker cable specifications.

Explains the colour coding of terminals (red positive) and how to ensure correct phasing for stereo imaging.

Specifies recommended amplifier output capability (20-30V rms, 50-100W) and warnings about using excessively powerful amplifiers.

Describes internal circuitry that protects the loudspeaker from excessive input signals and potential damage.

Guides on connecting speakers in phase for optimal stereo sound and how to check and correct phasing issues.

Instructions for cleaning the grille cloth and wooden parts, and general advice on maintaining the loudspeaker.

Advice on positioning the loudspeakers within a listening room for optimal acoustic performance and stereo imaging.

Notes on the importance of using high-quality source material to appreciate the loudspeaker's revealing capabilities.

Lists the technical specifications of the Quad ESL-63 loudspeaker, including dimensions, weight, and electrical data.