>  I forgot to mention, need a total diameter of
> less than about 32mm. =20

If you specifically want  a speaker, then for that size have a look at what=
 the model railway folk use for sound in locomotives. There are several mod=
el railway shops in Auckland that should be able to help you source somethi=
ng suitable. You can get oval ones as well.
--=20
Scanned by iCritical.

--=20
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