yaffstone Posted January 17, 2005 Share Posted January 17, 2005 I replaced the capacitors in my Belles this weekend. I used ASC metallized polypropylene, motor run in oil for the 13 uF and straight through leads for the 2 uF caps. I completed the first x-over, hooked it up and listened side by side with the original. The difference was there and immediately obvious. There is a lot more detail and clarity from the new caps. The parts for both speakers ran $48.00 from Allied electronics (www.alliedelec.com). I also measured the old capacitors and found that the 13 uF units were at 12.25 and 12.5 uF. The 2 uF units ran 1.97 and 2.02, one of each in both speakers. The new capacitors were rated at 12.5 uF and 2.0 uF and measured 12.7 and 2.02 respectively. So as pointed out by others, there may be some drift over the years and one can easily hear the difference in technologies (metallized poly versus paper and foil in oil). Quote Link to comment Share on other sites More sharing options...
Deang Posted January 17, 2005 Share Posted January 17, 2005 It's not the capacitance that drifts so much, but ESR. ESR's climb, causing the caps to behave as much like resistors as capacitors. Quote Link to comment Share on other sites More sharing options...
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