The following kit is supplied for home use only and may not be used for commercial gain unless authorised by ER Audio in writing. All photographs, drawings and text contained in the kits are subject to copyright laws and may not be reproduced or copied in part or in full without written permission from E R Audio. Acceptance of any kit implies acceptance of these terms.

B&W DM70 pic02

A very nice pair of B&W DM 70’s Continental Model

Photograph courtesy of Alexander from Holland

The most common problems with the electrostatic panel on DM 70’s is loss of output due to splits occurring in the diaphragm, arcing damage causing polarising voltage leakage (EHT) and accidental damage.

It is an easy task to replace the diaphragms on these speakers, re-coat them and repair the damage caused by over enthusiastic use of the volume control (arcing or sparking between stators)!

This will bring the performance of the ESL panel back to “as new”.

Generally, the electronics in these speakers are quite robust and rarely give trouble, the most common problem being failure of the EHT supply components. If this is suspected, feel free to contact us to receive troubleshooting advice.

The kit contains sufficient diaphragm film and conductive coating to replace the diaphragms many times and comes with all components and adhesives likely to be needed, plus full instructions.

Some speakers may have had “bodgy” repair attempts in the past and could have had the air gap spacers damaged during attempts to remove the original adhesive. If you have damaged or broken air gap spacers, there is now no need to be concerned, we are able to supply accurate laser cut replacements.

There are 2 types of spacers for early and late models. We need to know which type you have so we can supply the correct spacer. The best option is to take a photograph of the panel if it has not been dismantled or of the spacer if it has, and send it to us. This will ensure you get the correct ones.


Above, the components in a B&W DM70 ESL panel.

1   Rear (inner) Stator.
2   Rear air gap spacer and diaphragm unit - both badly damaged in this case.
3   Front air gap spacer - also damaged.
4   Front Stator.

Note, this is a later style stator and spacer assembly.

More photo’s below

Find out what some of our customers say by clicking on the links below
Testimonial 1   Testimonial 2  Testimonial 3

Take a look at some more DM 70 Continentals

Fine Audiophile Equipment

Designers and Manufacturers of Electrostatic Loudspeakers and Fine Audiophile Equipment

E R Audio Pty Ltd. ACN: 120 797 775, ABN 48 120 797 775


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B&W DM 70 Kit