I'm new here- I've got an iMac power pc G4, and I'm looking for a pinout diagram. Specifically, the 2.5mm 4 conductor jack that services the 2 surround speakers. This jack is a dual Left-Right channel jack, and I need to know what each conductor serves (ie ground1, ground2, left channel +, and right channel +), as well as if the metal sleeve at the base of the speaker plug serves a ground function.
The reason is that I need to find an adaptor to convert a dual L-R 2.5mm plug to a standard stereo 3.5mm plug, and these are very hard to come by. I found one source which supplies them for cell phone adaptors, but the tech guy was concerned that the proprietary connectors may not match up pin to pin-wise (in other words, cell phones and home computers may be different). He has the wiring diagrams for his adaptor, and I need the iMac pinout diagram to check compatability. Can any one here help with this or point me in the right direction? Thanks in advance,
Randy Davis
Help finding imac audio pinout
November 30, 2004 - 8:36pm
#1
Help finding imac audio pinout
I assume you're referring to the Pro Speaker jack, as the only other audio output on the iMac G4 is a standard 3.5mm stereo minijack.
I wouldn't mess with the Pro Speaker jack if I were you. Apple did some really funky design work on that one. Not only does it carry amplified analog audio, but there seem to be a couple sense lines included so that the computer knows when the Pro Speakers have been plugged in. If you need another audio output, I'd just buy a Griffin iMic.
Thank you first of all. Second, what is the other audio output on the G4?? If it had line-level output from a standard 3.5 mm minijack, that would be perfect, as long as it produced output while playing DvDs and music on the hard disk!!
And what is a Griffin iMic? Could this be used to supply audio signal to my external amp, and how would it accomplish this??
(PS I did try Mac tech support via phone, but the kid on the other end didn't even know what a pinout diagram WAS! So thanks for the help)
RANDY Davis