Diaphragm film - Minimum Quantity 10 Metres
3.5 micron Genuine Dupont Mylar C 670 mm wide uncoated. Best all round performance. Price per metre
4.2 micron Genuine Dupont Mylar C. 670 mm wide uncoated
Excellent transient response with good durability and ease of use.
6.0 Micron Hostaphan Tensilised uncoated film, great compromise between performance and durability,
800mm wide. Price per metre.
12 micron x 650 mm wide Aluminised Low S/R, works best on tweeters
All film has a minimum order quantity of 10 metres and is supplied on a roll - not folded.
Note, all film is rolled from the master roll to a smaller shipping roll with no contact from either the machine or the hands of the operator. The first 300mm and the last 300mm will be handled to attach and terminate the film from the roll. We always add an extra metre or so to allow for the handled material.
Conductive Coating - Re formulated for easier application
Clear, best all round performer.
Our new clear coating was tested for 2 years and has been used in all of our products for 5 years. It is now available for general sale. This material does not rely on ambient humidity to make it conductive and is stable in dry or humid conditions. The exceptionally thin film coating adds negligible mass to the diaphragm. Can be used direct from the bottle or diluted to produce desired surface resistance. Typical coverage is 1ml per 900 sq cm (1 square foot)
AUD $36.00 for 30 ml
AUD $45.00 for 50 ml.
Note, the above coatings are proprietary to E R Audio and are supplied on the condition that they are not used commercially, reproduced or analysed. Acceptance of the product implies acceptance of this condition.
Why mess with 2 pack epoxies? We have the answer to ESL Assembly
Is used for stator to panel bond, air gap spacers to panel or to stators. This adhesive gives a very strong bond in shear and peel. Slow curing gives time to get things exactly right. Can also be used to damp stators to prevent ringing.
Most adhesives have difficulty bonding polyester film to typical ESL panels, having poor peel characteristics. Our polyurethane based adhesive will bond diaphragms strongly and reliably. Slow cure time allows plenty of time to get things just right.
Some adhesives leave a hard brittle edge where it squeezes out from the join. This edge can damage the film as it flexes over it. The polyurethane adhesive leaves a “soft” edge where the adhesive squeezes out of the join, which will not damage the film.
Tried sourcing a genuine high voltage cable in a small package? We have silicone rubber insulated high voltage cable in 3.2 mm O/D rated at 10 kv.Can be used for audio signal as well as bias supply. Available in Red and Beige.
High Voltage Diodes, UF 4007
Ultra fast 1kv rated. Suitable for Quad and most other EHT supplies
High Voltage Capacitors .01uf 3kv rated
Ceramic capacitors for high voltage supplies, suitable replacements for Quad and B&W DM 70 EHT supplies etc
Genuine high voltage high value resistors are hard to get. We stock the Philips range of high voltage resistors in 10, 22 and 33 megohms. Rated at 3500 volts, these are ideal for diaphragm bias current limiting.
10 kv EHT resistors
100k - 470k 1 watt Metal Oxide Resistors. Used in the secondary side of the audio transformer in series or parallel to provide frequency filtering to the ESL panels.
This device is used to tension diaphragm film to the tension required for your project. Comes complete with full instructions to enable quick and repeatable results
This 108 page* manual is supplied in our ESL III and ELS 5 kits. Can be purchased separately and used as a guide for custom design construction. Invaluable!
(*At last count, subject to continuous improvement)
Now includes construction notes for our Acorn speaker, better value than ever.
Or emailed .PDF
(save on postage)
Copper EHT Foil
It is essential to provide an EHT rail around the perimeter of the diaphragm. This is best applied to the surface of the air gap spacer that comes into contact with the conductive coating. Our foil is 4 and 6mm wide, 25 microns thick, self-adhesive and can be soldered.
Specify which width you require
33 metre roll
Termination / Connection Blocks
Essential for terminating the above foil tape
High Quality Grille Cloth
Available in Black, navy blue and burgundy, other colours coming soon. This grille cloth is acoustically transparent and acts as a very good barrier to dust and insects that can cause problems with the operation of your ESL’s – highly recommended. 2 way stretch allows for easy fitting. 1.5 metres wide. Ask for a sample swatch!!
Rated at 6kv. Fine conductor, 24awg, suitable for audio signal applications from the transformer secondary.
3 colours available, Brown, Green, Blue.
100 Megohm 1 watt rated at 3.500v but will tolerate much higher voltage with low current.
AUD $3.00 Each
E R Audio Pty Ltd. ACN: 120 797 775, ABN 48 120 797 775
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Please note that domestic sales incur a 10% Goods and Services Tax (GST)