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Lee's S45 speaker

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Craig
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Craig posted on Thu, Aug 1 2019 8:10 PM

This was delivered in the post today, usual issue.....cone seized solid in the coil.


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Craig
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Otherwise its in very good shape, coil measures up at 3.4 ohms, cone and rubber both in good condition, one can see that the issue is the magnet has shifted on the frame...been knocked I expect....doesn't show well in the picture but it is off to one side.


Craig
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Clamped it in the vice and popped it apart, for me the most scary part of the exercise, once its separated out each part can be rubbed down and the old adhesive removed.


Craig
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The magnet and its mating face on the frame cleaned up first prior to allying epoxy, need to be careful to put the magnet back in the same polarity.


Craig
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This doesn't need to be dead centre on the frame, but the closer it is the better.....


Craig
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The rear plate and core need to be cleaned up too, old adhesive removed....


Craig
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And then they need epoxying together.....they need to be placed on a completely flat surface or the core floats around!


lee
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lee replied on Fri, Aug 2 2019 8:51 PM

Ooooh... glad someone knowledgeable is doing this :-D

thanks for updates craig

And for quick progress!

 

frugal audiophile

Craig
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Dust cap lifted off with the assistance of the girlfriends hairdryer...….


Craig
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When the epoxy has cured the base plate is held in a vice and the frame, magnet and coil are carefully lowered onto the upright core. then the "alignment jig" is fitted, a saucepan is useful to rest everything on


Craig
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Adjusting the screws around the lower half of the jig secures it to the magnet, then looking through the dustcap one can adjust the upper row of screws to centre the core in the coil.....


Craig
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This takes very little time and once happy epoxy is applied before opening a bottle of wine...….


lee
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lee replied on Sat, Aug 3 2019 11:16 AM

great work!

Any recommendation on wine for this repair :-)

frugal audiophile

lee
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lee replied on Sat, Aug 3 2019 11:17 AM

great work!

Any recommendation on wine for this repair :-)

frugal audiophile

lee
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lee replied on Sat, Aug 3 2019 11:20 AM

Will be on the look for some stands for these I think... might have to make some since they are reasonably rare I think...

frugal audiophile

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