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I'm tackling my first refoaming job on a pair of Advent/1 speakers given to me by a buddy. The actual refoaming is going fine, but I dropped one of the damn woofers. It might be my imagination, but it seems that the dropped woofer has less margin of error than the undropped woofer when it comes to having a free range of movement -- I get more voice-coil rub when doing the push test, although it's still fairly easy to find a sweet spot where it's noise-free.
So I have three questions: 1/ Could I have knocked something out of alignment (it pretty much landed on the edge of the magnet, with no visible damage to magnet or frame)? 2/ As long as it's able to move without noise, will it be fine to make music? 3/ If something did get knocked sideways or loose, can I fix it?
shim the vc-former so that it is as centered in the gap as possible then do the gluing of the surround and basket.
when the glue gets tacky push the cone down so that the surround touches the basket.
then press the surround down at like 9oclock and 3oclock then rotate the driver 90degrees and press down again then 45degrees etc etc.
idea is to evenly press the surround down without causing it to shift.
the shims will hold the vc-former straight but its entirely up to you to get the surround glued down without any stress on it.
if you can get no rub even from the dropped driver you will be ok doing it the way i described.
You probably knocked the pole piece out of alignment. They are not usually glued to the magnet so any shock will cause them to move. The real fix is to remove the cone wick includes the spyder or cone dampener and unsoldering the voice coil wires. then remove the cone and realign the pole piece center again.
The trick is trying not to damage the spyder/dampener while removing it so you can glue it back on.
Or just get another speaker needing surrounds, You can get them dirt cheap when they need surrounds. I have had no luck with using a speaker once the pole piece has shifted.
Just kidding. I doubt anything would've knocked loose without being completely broken in a noticable manner. You have the spider and the magnet attached to the frame and that's about it. If they aren't detached, you should be ok.
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