On Dec 9, 2010, at 10:01 PM, Jerry Miller wrote: > Jeff; > > Apple has never used a standard mic input. Their headphone output is a > standard 1/8th" stereo jack but......the audio input was, for many years, a > special jack that was set up for Apple's PlainTalk mic input. It required a > PlainTalk headset that had a preamp built into the mic that was powered by a > + 5VDC in the Mac. (look up PlainTalk on Wikipedia or Apple). Apple > discontinued PlainTalk with the last G4's. The G5's and subsequent have a > "line Level" audio input that requires an external preamp if you intend to > use a mic. (actually the early Mac's audio input was "line level" also, they > just boosted the mic signal from "mic level" to "line level" all within the > headset and special PlainTalk jack.
Never say never. The mic input from the days of the IIsi up till they introduced the PlainTalk mic in the Quadra to 1st Power Mac era was indeed a low level mic input. Quite standard. Clark Martin Redwood City, CA, USA Macintosh / Internet Consulting "I'm a designated driver on the Information Super Highway" -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list
