It is a huge 15" sub woofer and activates the reed from  about 15cm.

I have disconnected the reed switch as I dont have the holder but have
found the soldering iron is doing the best job at slicing thru the
wax/plastic like glue.



On 29 July 2016 at 01:59, Sean Breheny <shb7@cornell.edu> wrote:

> What kind of transducer are you working on? Does it really have such a bi=
g
> magnet that you can't keep the reed switch portion of the handpiece far
> enough away from the magnet to prevent this from happening?
>
> Many soldering devices use a similar mechanism. Metcal irons usually have
> magnets in their holder and will go into a low-power mode when the
> handpiece is in the holder.
>
> On Thu, Jul 28, 2016 at 2:47 AM, Justin Richards <
> justin.richards@gmail.com>
> wrote:
>
> > I just destroyed a 15" transducer so with nothing to lose decided to tr=
y
> > and dis-assemble and maybe repair.
> >
> > I started to use a hot air station but it seemed every time I pointed t=
he
> > gun downwards it cut out.
> >
> > Dismantled the hand piece several times finding nothing obvious but
> noticed
> > a reed switch  and pondered  its presence.
> >
> > Finally it dawned on me that it was cutting out in the presence of the
> > magnetic field.
> >
> > Anyone have any clues as to why there is a reed switch glued to the
> inside
> > of the handle.
> >
> > Justin
> > --
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