Problems with microphone/headset on beige G3

[crenz]

I want to connect a headset to an old beige G3 (266 MHz) that runs Mac OS X 10.2.6. Unfortunately, the microphone doesn't work. I don't quite understand why:

• The whole headset works on my PowerBook (headphones + microphone)
• The headphones part works on the beige G3
• If I plug in the headphones as microphone, I can record just fine with Audacity on both channels (you knew that you can use headphones as a mike, didn't you ).
• Once I plug in the microphone into the microphone input, no signal is recorded
• The headphones jack and microphone jack look identical (same length etc.)

I'm really stumped. Anybody know what's the problem?

 

[Horrortaxi]

Have you enabled the mic in System Preferences?

 

[crenz]

Well, otherwise I wouldn't have been able to record using the headphones. So it seems everything is turned on okay.