Now on my Paudio 18s I am seeing as low as 3ohms across the board. The speakers sound fine but I am wondering if the DC resistanceni am reading is a result of a miss spent youth where overheating the coils might have lessened thier resistance. These seem to be original cones and look like factory glue jobs. I would think if someone reconed them to 4 ohm that they would have put some sort of label or sharpeed over the 8. Any one have insite on this phenomenon ??
Chris,
The current PAudio SD 18 should read 5.2 ohms DC resistance.
Overheating coils temporarily
increases their DC resistance.
If the impedance had dropped permanently it would be due to shorted coils, and they would not "sound fine", nor would it be likely eight burnt coils would read within .2 ohms of each other.
Generic four ohm recone kits are available that will fit the original cones and look like factory glue jobs , good reconers can make them look like originals.
If the person reconing the drivers had used tape to re-lable the impedance to not the change, the seller could have removed the lable to make the drivers look more like "factory original" before putting them back in the cabinets.
At any rate, sounds like they are still the same (wrong) impedance as they were when you asked about them on July 2, 2023
Art
