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Tools and Parts
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When you disassemble a Quad Electrostatic respect the high voltages! If in doubt - don't! You will need a cross-head screwdriver, flat bladed screwdriver, soldering iron and solder, a Stanley knife, pen and paper, and the specialised tools listed below:
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Description
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Supplier
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Part No.
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Purpose
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High Voltage Probe
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RS-Components(?), Davison
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610-281
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Essential for measurement of panel voltages at 1.5kV and 6kV
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Silver Loaded Paint
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RS-Components
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186-3600
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Repair any arcing damage to stator conductive layers
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Red Heat Shrink Tube
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RS-Components, Dick Smith Electronics, Jaycar Electronics
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398-278
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Insulate Solder Posts on Bass Panel
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22 MΩ resistor
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RS-Components
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164-8445
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Can be used in treble panel EHT line, but not recommended. [See FAQs]
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10 MΩ resistor
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RS-Components
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164-8401
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Can be used in bass panel EHT line, but not recommended. [See FAQs]
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2.2 MΩ resistor
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RS-Components, Dick Smith Electronics, Jaycar Electronics
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RS164-83 16
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Input side of EHT ladder circuit.
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330 kΩ resistor
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RS-Components, Dick Smith Electronics, Jaycar Electronics
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RS149-10 5
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Input side of EHT ladder circuit
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Heavy Duty PVC Tape
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Any Hardware Shop
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Not Relevant
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Sealing panels and dust cover edges.
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Scotch ™Conformable Insulation Tape (High Voltage)
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3M Corporation
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Cat. 392NA
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Sealing panels and dust cover edges.
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"Standard" Silicon Diode 1N4007
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RS-Components, Dick Smith Electronics, Jaycar Electronics
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RS261-98 0
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EHT ladder circuit.
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Isopropanol
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RS-Components, Scientific Supply Houses
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RS693-77 5
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Cleaning various parts. Non-agressive on most plastics.
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Anti Corona Lacquer (circuit board lacquer)
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RS-Components, Dick Smith Electronics, Jaycar Electronics
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RS569-31 3
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Insulate any repairs to damaged areas.
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M3 bolt, 8 - 9 mm
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Dick Smith Electronics, Jaycar Electronics
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Relevant Catalog, or online
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Hold treble panel together, (60 per panel).
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M3 12mm bolts
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Dick Smith Electronics, Jaycar Electronics
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Relevant Catalog, or online
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Hold bass panel together, (60 per panel)
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M3 nut to suit above bolts
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Dick Smith Electronics, Jaycar Electronics
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Relevant Catalog, or online
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Hold bass panel together, (60 per panel)
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M3 washers (2 per bolt)
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Dick Smith Electronics, Jaycar Electronics
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Relevant Catalog, or online
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Hold bass panel together, (60 per panel)
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High Voltage Wire - Alpha Test Lead
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Mouser Electronics, Texas
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Buy Online
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Rewire bass panels.
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High Voltage Capacitors
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Area 51
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Buy Online
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Rebuild EHT blocks
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High Voltage Diodes
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Mouser Electronics, Texas
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Buy Online
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Rebuild EHT blocks
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Specialised Materials
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Material Name
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Purpose
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Mylar®, Melinex®, Clysar®, Hostaphan®. All of these are proprietary names for P.E.T. - Polyethylene Terypthalate film. Mylar® is considered the best material, as it will hold any given tension, short of breaking, for many years. The replacement film available on this site is just as good - Area 51 - we have had it made to specfication for this speaker.
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12 mm Mylar® is used frequently to make treble and bass diaphragms. The original Quad used 6 micron tensilised Mylar® in the treble panel. Although PETP films are available down to 0.9mm in thickness, it is in debate that most would hold the necessary tensions for long, although 6 mm Hostaphan® has shown some promise recently in trials. Tensilised films are still available, though you generally find you have to buy a minimum lot of 8 tonnes of the stuff!!
Sources: (6-micron tensilised film) The Quad ESL Site - Area 51
Sources: (12-micron film)
The ESL Info Exchange (Barry Waldron's Catalogue)
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Diaphragm Coating Material?
Hand Soap, Graphite, Anti-static Spray and even Wall Paper Paste. None of these were used by Quad. Quad used a soluble nylon called CALATON ® made by I.C.I. (U.K.). It is no longer commercially available. You can still use DIY nylon coatings though.
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The common substances mentioned can be bought just about anywhere.
Specialised permanent anti-statics can be bought from computer consumable suppliers.
A soluble nylon ELVAMIDE®; is available from Du Pont and Area 51. DIY soluble nylon is possible, depending on your access to certain chemicals.
The original Quad coating - CALATON - is available here - Area 51.
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Quad 63 - Diaphragm Materials and Repair Information
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Where? MT Audio, Sweden. Click the graphic below to go straight to Mats Tornquist's ESL '63 repair page.
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