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I went with black textile wrap , excuse the very poor quality of the pic .The larger of the two was supposed to 1.2 mH ,came out at 1.02mH, the coils splipped on the former after winding and hence the doughnut shape , the wrapping material is strong and allows the coils to be well tensioned into shape, I can probably live with the slight frequency shift caused by a value 20% low ,both these were done with 2.13 mm or 12 awg , the larger one is well over a kilo in weight , I found some good looking motor run box caps in a range of values suitable very suitable for crossovers eg 1, 1.2, 1.5, 1.8 and up , less than two euros each , massive bakelite blade fuse holders will be repurposed as terminal blocks to mount things up on , I was thinking of trying automotive jump lead cable as hook up wire from amp to crossover easily available in ratings of hundreds or thousands amps most of it with fine stranded copper and silicone insulation ,100watt metal clad wirewound resistors also only a euro or two each might give them try .
I went with black textile wrap , excuse the very poor quality of the pic .
The larger of the two was supposed to 1.2 mH ,came out at 1.02mH, the coils splipped on the former after winding and hence the doughnut shape , the wrapping material is strong and allows the coils to be well tensioned into shape, I can probably live with the slight frequency shift caused by a value 20% low ,both these were done with 2.13 mm or 12 awg , the larger one is well over a kilo in weight , I found some good looking motor run box caps in a range of values suitable very suitable for crossovers eg 1, 1.2, 1.5, 1.8 and up , less than two euros each , massive bakelite blade fuse holders will be repurposed as terminal blocks to mount things up on , I was thinking of trying automotive jump lead cable as hook up wire from amp to crossover easily available in ratings of hundreds or thousands amps most of it with fine stranded copper and silicone insulation ,100watt metal clad wirewound resistors also only a euro or two each might give them try .
