Adapter for iMac speakers
Can I get an adapter to plug iMac speakers into a PC
it's hard to find a reliable source of information - since there where two sets on the market
the one from the cube and the regular apple pro speakers
the apple pro speakers can be connected via ifire .
but as chris wrote - they are no longer manufactured and hard to get
one source for the cable pinout is this
and here are a few more info's about the speakers
Are you talking about Apple pro speakers, those Clear acrylic spheres? to use them on a PC, you need a Griffin iFire, though they are no longer manufactured, and hard to come by.
Another is Griffin's Powerwave (usb) Audio adapter. The nice thing about the Powerwave was that it came with a pro speaker breakout cable to attach standard two line speakers.
Ok, so to use the Apple Pro speakers you need either a iFire, Powerwave, G4 iMac, Powermac G4 (Digital Audio, Quicksilver and MDD). Meaning that all the components to make an iFire substitute already exist on these used logic boards: Apple Pro speaker connector; amplifier and stereo audio connector and how they are powered.
Does this sound reasonable? $20~30 for a used logic board compared to $200+ for a used iFire, it could be worth a try. Any thoughts?