Lowther cones or AER cones (Off Topic)

by GC, Friday, April 22, 2005, 18:07 (6943 days ago) @ GC

Hi Mark
Interesting to know for future reference.
Can you be a bit more specific about the solvent. There are 'mild'
solvents like ethyl and amyl acetates or petrolueum spirits and pretty
'powerful' solvents like acetone. Would not want to use something that may
help detach the voice coil.;-) ;-)

Cheers Chris

Chris,

I used a lacquer thinners that is used for thinning/spraying automotive paint.
It flashes off exceedingly quickly and leaves no residue at all.
Use it sparingly - it will never remove any enamel insulation from the VC wire and in addition as long as you do not wet the surface too much will not attack the glue under the coil - do not use acetone as it is far too aggressive.

Well I should say that of course users must try this at their own risk etc and of course there is no going back - but then who would want to?

One final observation - I have tried the new Lowther reverse roll whizzer diaphragms and found that they are kind of dead....snap and attack is adversly affected IMO.
Note though that I am using a 130Hz Tractrix Front horn (quite deep at 53 cms odd) - the new diaphragms may work in "rear only" loaded horn enclosures i.e sans any front horn but even then I suspect the reverse roll whizzer is a step in the wrong direction.....mainly because Lowther shortened the whizzer in the process...

HTH

Mark

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