New Equivalent 3145 Crossover
I will have at last completed the new equivalent crossover boards tonight.
The intention will be to first run some JBL test jig measurements and then post some voltage drives and driver response graphs.
Below are images of the crossover boards and spinning of the wooden coil formers to exact dimensions on a Lathe. This was necessary to arrive at the precise inductance and dc resistance required for this design courtesy of "Giskard".
The resistors are a temporary item until I can arrange some Mills resisters which are not available locally. Perhaps a member can offer to help out here..no doubt they are superior to sand cast types.
The capacitors used in this instance are Claritycaps , film and foil 630 volt 5% tolerance. The boards are polypropolyne and were actually cut from domestic breadboards. The terminations are all 1 mm 100% pure Aust copper.
Ian
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