1986 Polk 5jr's with a 16uF Cap?

pkquat
pkquat Posts: 748
in Vintage Speakers
I was getting ready to do some crossover rebuilds and ran into some 5Jr's (ported) with the MW6502 driver ('86), fuses, and the electrical tape wrapped resistor / cap / inductor combo hot glued to the connection plate / large inductor. It looks very factory based on other pictures I have seen. They sound like 5jr's with SL2000's but the caps were 16uF not 12. Has anyone seen this before? Is this some variant or super sloppy assembly? I can probably check the caps with a multimeter, but I wonder if the inductors are different too. I think you can get similar crossover points with different cap / inductor combinations. Does anyone know what type of 12db crossover Polk used, or if it varied?
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  • pkquat
    pkquat Posts: 748
    Good news / strange news. The inductor was right on at .19mH, (18.9 µH to be exact). The cap value measured 13 µF. The cap in the other crossover has 12 µF printed on it. I am guessing it was a manufacturing anomaly.

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