Currently Being ModeratedJan 29, 2013 6:13 AM (in response to sburtle)
Probably not because no iMac I'm aware of (at least since 2006) has had those inputs, time to buy some speakers with up-to-date connections. Apple sells quite a few in their online store. Here are some I found...
Apple tends to sell top of the line speakers so you may want to look elsewhere too.