Hopefully, you will be able to find most of the parts listed below at the associated supplier. They are "common" parts, in so much as they exist in the world independently of Quad ESLs and any other speaker, as you can probably tell from the list below. Some, like "silver loaded paint" are a "bit rarer" but they are out there from specialist, non-Quad, suppliers.
N.B. Jaycar is an Australia ONLY supplier so far as I know. RS-Components is a worldwide company.
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 |
Supplier |
Part No. |
Purpose |
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High Voltage Probe |
610-281 |
Essential for measurement of panel voltages at 1.5kV and 6kV |
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Silver Loaded Paint |
186-3600 |
Repair any arcing damage to stator conductive layers |
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Red Heat Shrink Tube |
398-278 |
Insulate Solder Posts on Bass Panel |
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22 MΩ resistor |
164-8445 |
Can be used in treble panel EHT line, but not recommended. [See FAQs] |
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10 MΩ resistor |
164-8401 |
Can be used in bass panel EHT line, but not recommended. [See FAQs] |
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2.2 MΩ resistor |
RS164-83 16 |
Input side of EHT ladder circuit. |
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330 kΩ resistor |
RS149-10 5 |
Input side of EHT ladder circuit |
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Heavy Duty PVC Tape |
Any Hardware Shop |
Not Relevant |
Sealing panels and dust cover edges. |
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Scotch ™Conformable Insulation Tape (High Voltage) |
3M Corporation |
Cat. 392NA |
Sealing panels and dust cover edges. |
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"Standard" Silicon Diode 1N4007 |
RS261-98 0 |
EHT ladder circuit. |
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Isopropanol |
RS-Components, Scientific Supply Houses (various, like Selbys) |
RS693-77 5 |
Cleaning various parts. Non-agressive on most plastics. |
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Anti Corona Lacquer (circuit board lacquer) |
RS569-31 3 |
Insulate any repairs to damaged areas. |
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M3 bolt, 8 - 9 mm |
Relevant Catalog, or online |
Hold treble panel together, (60 per panel). |
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M3 12mm bolts |
Relevant Catalog, or online |
Hold bass panel together, (60 per panel) |
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M3 nut to suit above bolts |
Relevant Catalog, or online |
Hold bass panel together, (60 per panel) |
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M3 washers (2 per bolt) |
Relevant Catalog, or online |
Hold bass panel together, (60 per panel) |
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High Voltage Wire - Alpha Test Lead |
Buy Online |
Rewire bass panels. |
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High Voltage Resistors |
Buy Online |
Fix Audio Transformer X-Over ? |
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High Voltage Capacitors |
Buy Online |
Rebuild EHT blocks |
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High Voltage Diodes |
Buy Online |
Rebuild EHT blocks |
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Specialised Materials |
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In Summary, these days, your very best single point of supply for diaphragm materials, coatings, electronics and so forth to repair the Quad 57 and 63 (and others) is ER AUDIO, Perth, Western Australia. |
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Material Name |
Purpose
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Mylar®, Melinex®, Clysar®, Hostaphan®. All of these are proprietary names for P.E.T. - Polyethylene Pterypthalate film. Mylar® is considered the best material, as it will hold any given tension, short of breaking, for many years. The replacement film available at ER Audio. |
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!! ER Audio stocks a thinner film that will give even better treble panel performance. I have tried it !
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Diaphragm Coating Material? |
The common substances mentioned can be bought just about anywhere.
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Quad 63 - Diaphragm Materials and Repair Information |
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