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Model M 1390131 Found w/ Speaker
Posted: 27 Jul 2016, 23:10
by y11971alex
So, I received my 1390131 today, and I found a speaker on the rear case. It doesn't make any noise when I type, though.
Posted: 27 Jul 2016, 23:13
by seebart
Some pics would be nice.
DT wiki:
Virtually all Enhanced Keyboards have a small speaker grille on their bottom surfaces; however, only a few variants actually include a speaker (the keyboards of the RS/6000 workstations being the primary example).
wiki/IBM_Enhanced_Keyboard
Posted: 27 Jul 2016, 23:22
by y11971alex
seebart wrote: Some pics would be nice.
DT wiki:
Virtually all Enhanced Keyboards have a small speaker grille on their bottom surfaces; however, only a few variants actually include a speaker (the keyboards of the RS/6000 workstations being the primary example).
wiki/IBM_Enhanced_Keyboard
Yes, I found a speaker, not just the speaker grille.
Posted: 27 Jul 2016, 23:23
by seebart
I understand you, that's why the pictures would be nice!
They do not show up that often.
Posted: 27 Jul 2016, 23:40
by webwit
My IBM Soft Touch as well. Greasy thing.
Posted: 27 Jul 2016, 23:44
by seebart
Ah yes thanks webwit.
Posted: 27 Jul 2016, 23:58
by y11971alex
webwit wrote: My IBM Soft Touch as well. Greasy thing.
Does it make noises?
Posted: 28 Jul 2016, 00:32
by rootwyrm
No, it doesn't and won't. The RS/6000's have additional wired pins on the PS/2 port specifically for the speaker. Doesn't affect regular PCs at all.
Edit: so if you want to MAKE it work, here's what you need to do.
Connect PS/2 pin 2 (SDL F) to SPKR SIGNAL, and PS/2 pin 6 (SDL A) to SPKR GND on the motherboard. Do NOT attempt to use a normal PS/2 connector on your system as a pass-through as those pins are RESERVED in the ATX standard. You can wire basically direct to virtually any motherboard and it'll work.