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.

Air Gap Spacers: (add-on extra) $198

If you have a speaker in which the Air Gap Spacers are damaged (old age, bad former repairs), then we can supply laser cut replacement parts for $198 (both speakers).  See photo of these parts in the left margin of this page.