No attempt was made to hear sound from both internal and external
speakers.

My primary question is whether case wiring is correct on computer I
built, as I hear no sound from internal speaker, although I hear "system
sounds" from external speakers. I hear audio through external speakers,
and that is not an issue.

Jim Meagher stated internal speaker and external speaker circuits are not
related, but did not explain why, if this is so, I hear "system sounds"
from external speakers.

Joe Cuffy stated, contrary to above, that plugging in external speakers
transfers internal speaker input to external speakers. However, I do not
hear "system sounds" from internal speaker with external speakers
unplugged, indicating that plugging in external speakers does not affect
internal speaker.

No one has addressed whether the fact that mobo has four speaker
connections, while internal speaker has two leads, leaving two mobo
speaker connections unfilled, relates to lack of output from internal
speaker.

I suspect something is missing in internal speaker circuit, and that
software has routed "system sounds" to external speaker. Hearing "system
sounds" only through external speakers has the disadvantage that I do not
hear "system sounds" when external speakers are not turned on.

Mobo:

Data Out
N.C.
Ground
+5V

Speaker:

White
Orange

Demetri Kolokotronis

On Mon, 4 Sep 2000 12:28:36 EDT [log in to unmask] writes:
>
> I can only assume that your machine follows the normal pattern and
> you can't
> have sound emitting from two outputs simultaneouly. When you plug in
> an
> external speaker you divert system sounds to that circuit and if the
> speakers
> are not "on" then no sounds are heard. To hear system sounds without
> the
> external speakers being "turned on" you must also unplug them to
> reconnect
> the internal speaker to the mobo sound circuit.
>
> The headphone sockets on the face of the cd-rom drives work the same
>
> way.......... plug in a headset and the external speakers are
> disabled................
> two sources of sound blaring simultaneously might be a little
> disconcerting.
>
> joe

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