I noticed one of my Millenium tweeters had a peak at 12 kHz or so. I was also seeing higher F3 distortion from this unit. I bought new voice coils to hopefully eliminate this difference. Well when I put the new voice coils in and checked the impedance, there were now twin resonant peaks. I've attached plots of the in box frequency response and impedance profile for the two units.
When I changed the voice coils, I also glued down the felt damping pad behind the dome, because it was loose. On one unit, it was put in completely wrong.
Could it be a lack of ferrofluid causing this? Or could the addition of a small amount of glue causing a second resonance? Too much trouble for $200 each tweeters. :roll:
When I changed the voice coils, I also glued down the felt damping pad behind the dome, because it was loose. On one unit, it was put in completely wrong.
Could it be a lack of ferrofluid causing this? Or could the addition of a small amount of glue causing a second resonance? Too much trouble for $200 each tweeters. :roll:
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