At 11:47 PM -0500 1/17/2003, Roland Drake wrote: >Dear List: > >A friend just purchased a headset for chatting online. The headphone section >works perfectly well on his 8500. The 8500 is running OS 9.2.2, has a Sonnet >G3 350 card, and 320 MB RAM installed. The headset is plugged into the >headphone and microphone mini-jacks (3.5 mm), but the headphone section is >the only part that works when attached to the 8500. The microphone section >does not. There is simply no audio coming through the microphone. I tested >this headset on my G4 and both the microphone and headphone sections work >fine. > >I'm wondering if the microphone mini-jack input is defective or completely >dead. When I jiggled this mini-jack in its receptacle, there is some >response in the Sound Control Panel under the Input tab with the Check >Signal Level box checked. A few of the indicators do light up. > >If this port is defective or dead, can I attach the microphone through the >RCA jacks at the back of the 8500 with the appropriate adapter plug?
The 8500's microphone input jack is a line level input, about 1Volt signal level. The microphone in question is almost certainly a microphone level output, about 10mV (.01Volts). If you yell into the mic and listen carefully to the computer (with audio pass through enabled) you "might" hear something. To make this mic work you need to add a pre-amplifier to it. I think Griffen Technologies makes a suitable preamp. -- Clark Martin Redwood City, CA, USA Macintosh / Internet Consulting [EMAIL PROTECTED] "I'm a designated driver on the Information Super Highway" -- PCI-PowerMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
