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The film is masked around the edges and over every spar, prior to adding the graphite coating to keep the coating away from the edges and off the spars. When the masking is removed it also removes the vapor deposited coating effectively turning the panel from 1 large speaker into several small...

The main (but no only) factors responsible for panel degradation are moisture, UV exposure and environmental contamination (dust, smoke, etc). Moisture is by far the biggest enemy and will degrade the panel faster than anything else. An air conditioned room is about all you need to prevent...

Did you also solder the black and blue wire to the bare spot on the front and back of the panel? If not it won't play, even if you got the red wire put back in correctly

To test if you got the red wire inserted in the right place, use a voltmeter to check for conductivity. Place one probe from the voltmeter into the end of the connector where the red wire terminates. Then gently touch anywhere on the film with the other probe. Don't poke through it! (If you...

Here's a rare MartinLogan accessory you may have never seen before. It was made by one of the engineers a long time ago and sat in Gayles basement in Desoto. Then it got moved to the panel room at the factory in Lawrence and I acquired it in an employee silent auction. Originally designed to...

I built these panels for many years. There's a graphite tape bias strip that runs down the edge of the panel and halfway across the bottom. The red wire needs to be touching this bias strip. Its what feeds power to the film. The black wire gets soldered to bare metal on the back stater. The...