Long shot, but: I have a pair of KEF Model Threes that had a shorted cap in the crossover. Replacement part on the way. While I had everything on the bench, I measured everything else on each crossover, results are in the attached schematic (big thank you to Lojzek and Gavmak who did the work on the original).
Everything matched (within a few percent) except L10, which shows distinct signs of heat stress on both units. I measured 5.0uH on one, and 6.5uH on the other (Proster meter). My research suggests that inductor failure results in a change to a lower value, not higher (or fail entirely by being shorted or open), so 6.5 uH would be my guess. But it could be that both inductors have changed value.
Anyone have a data point that would help?
Thanks much!
Everything matched (within a few percent) except L10, which shows distinct signs of heat stress on both units. I measured 5.0uH on one, and 6.5uH on the other (Proster meter). My research suggests that inductor failure results in a change to a lower value, not higher (or fail entirely by being shorted or open), so 6.5 uH would be my guess. But it could be that both inductors have changed value.
Anyone have a data point that would help?
Thanks much!
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Got the value of L10 from KEF (thanks !!!): 2.7mH. So they're both fried.
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