Re: IIgs Internal Speaker

[dempson@actrix.gen.nz (David Empson)]

Thomas Fok <thomas@glink.net.hk> wrote:

> I have just got a used IIgs.  But I find that the internal speaker is
> missing.  Thus, I would like to confirm the connection of the speaker.
> 
> 1) What's the impedence of the speaker?? 8ohm??

Yes.

> 2) Is it connected to J17 connector of ROM3 motherboard??

Yes.  The inner terminal goes to the + connection on the speaker, and
the outer terminal goes to the - connection.

> 3) Just curious to know what S1 connector is.

If this jumper is closed, it prevents access to the Control Panel (via
the Control-Apple-Escape Desk Accessory menu, and probably
Control-Option-Reset as well).  It is intended for use in a school
environment, to prevent the pupils fiddling with the machine settings.

(This jumper is only available on the ROM 3 motherboard, not the
original IIgs motherboard.)

-- 
David Empson
dempson@actrix.gen.nz
Snail Mail: P.O. Box 27-103, Wellington, New Zealand