{"product_id":"quad-esl-63-delay-line-pcb-assembly-spares-repairs-electrostatic-part","title":"Quad ESL-63 Delay Line PCB Assembly Spares Repairs Electrostatic Part","description":"\u003cp\u003eQuad ESL-63 delay line PCB assembly, sold as spares or repairs — removed from the speaker chassis and not in a serviceable installed state.\u003c\/p\u003e\u003cp\u003eThe Quad ESL-63 is a full-range electrostatic loudspeaker, and its delay line uses concentric annular stator rings fed through analogue LC delay stages to simulate a point source behind the panel. This listing is for the delay line PCB assembly on its own, removed from the speaker.\u003c\/p\u003e\n\n\u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul class=\"key-spec-list\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDelay-Line Architecture:\u003c\/strong\u003e uentially via analogue LC delay lines; ~24 µs delay per s\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePer-Stage \/ Total Delay:\u003c\/strong\u003e ~24 µs per stage; ~168 µs total across 7 stages\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Host Speaker:\u003c\/strong\u003e Quad ESL-63 electrostatic loudspeaker\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Impedance:\u003c\/strong\u003e 8 ohms (6.2 ohms minimum)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Handling:\u003c\/strong\u003e 100 W \/ 10 V rms \/ 40 V peak maximum signal input\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul class=\"spec-list\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Brand:\u003c\/strong\u003e Quad\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e green\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Model:\u003c\/strong\u003e ESL-63 Delay Line\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e United Kingdom\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eYear Manufactured:\u003c\/strong\u003e 1980s\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Host Speaker:\u003c\/strong\u003e Quad ESL-63 electrostatic loudspeaker\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAudio Inputs:\u003c\/strong\u003e 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDelay-Line Architecture:\u003c\/strong\u003e uentially via analogue LC delay lines; ~24 µs delay per s\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Impedance:\u003c\/strong\u003e 8 ohms (6.2 ohms minimum)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSensitivity:\u003c\/strong\u003e 86 dB SPL for 2.83 V rms at 1 metre\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Handling:\u003c\/strong\u003e 100 W \/ 10 V rms \/ 40 V peak maximum signal input\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransducer Type:\u003c\/strong\u003e Full-range electrostatic (dipole)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePer-Stage \/ Total Delay:\u003c\/strong\u003e ~24 µs per stage; ~168 µs total across 7 stages\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiaphragm Material:\u003c\/strong\u003e Melinex (biaxially-oriented polyethylene terephthalate \/ Mylar-type) ultra-thin film\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRadiation Pattern:\u003c\/strong\u003e Dipole (full-range, open-backed panel)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (H × W × D):\u003c\/strong\u003e 36\" H × 26\" W × 6\" D (base depth 10\")\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHost Speaker Power Handling:\u003c\/strong\u003e 100W \/ 10V rms \/ 40V peak maximum signal input\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHost Speaker Sensitivity:\u003c\/strong\u003e 86 dB SPL \/ 2.83V rms \/ 1 m\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHost Speaker Frequency Response:\u003c\/strong\u003e 35 Hz – 20 kHz (–6 dB points)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Manufacture:\u003c\/strong\u003e England\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHost Speaker Production Years:\u003c\/strong\u003e 1981–1999\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Chorlton Analogue","offers":[{"title":"Default Title","offer_id":62511465595267,"sku":"219A","price":55.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1610\/2401\/files\/12_46c4aaed-e16e-4e1d-9b2e-e3aac20e8487.jpg?v=1788285639","url":"https:\/\/chorltonanalogue.com\/products\/quad-esl-63-delay-line-pcb-assembly-spares-repairs-electrostatic-part","provider":"Chorlton Analogue","version":"1.0","type":"link"}