Have a pair of used Magnepan 1.7 speakers with an open supertweeter foil. Since this is aluminum foil, using silver or copper will cause corrosion just like in house wiring when copper or silver are touching aluminum wiring.
I found some nickel based conductive adhesive for a situation like this. It comes in a small applicator to paint on.
The glue on the panel with the open trace is the one that is brown in color on the right. The glue has been exposed to UV, so some of that will be removed once I find the foil break. It seems to be at one of the foil folds near the bottom of the panel.
I do have a full foil repair kit from Magnepan to use, but want to try a reoair first.
This pair has been converted to direct drive for use with a DSP crossover and Class D amps. Will be putting a 2 Ohm resistor in series with the supertweeter foil so the impedance is high enough for the Class D amp to have full frequency bandwidth to drive it to 20KHz. Below 2 Ohms, the typical Class D amp high end starts rolling off the frequency response.
Anyone that has tried a quasi ribbon repair would be great to get any tips. I have the acetone and alcohol recommended to clean the glue from the foil and cotton swabs to remove the paint and glue before repair.
I found some nickel based conductive adhesive for a situation like this. It comes in a small applicator to paint on.
The glue on the panel with the open trace is the one that is brown in color on the right. The glue has been exposed to UV, so some of that will be removed once I find the foil break. It seems to be at one of the foil folds near the bottom of the panel.
I do have a full foil repair kit from Magnepan to use, but want to try a reoair first.
This pair has been converted to direct drive for use with a DSP crossover and Class D amps. Will be putting a 2 Ohm resistor in series with the supertweeter foil so the impedance is high enough for the Class D amp to have full frequency bandwidth to drive it to 20KHz. Below 2 Ohms, the typical Class D amp high end starts rolling off the frequency response.
Anyone that has tried a quasi ribbon repair would be great to get any tips. I have the acetone and alcohol recommended to clean the glue from the foil and cotton swabs to remove the paint and glue before repair.
